7x57 Build

7x57’s should be 1:9 (or rather 1:8.66) to handle up to 175g bullets. This also makes them, alongside the 30-06, the perfect rifles for handling copper bullets without having to drop into very low weights.
Norma loves their 156g uni-offering, but it’s actually a poor mid-way point and it performs poorly in terminal velocity in 6.5x55 for example.
Even a 1:10 twist 7x57 should stabilise a 156g though - but not all barrels like the somewhat odd 156g bullet
yep, but i think that is the case with not just those two, but a good few of the "old" classic european catridges, developed in that period. The 6.5x55 included, the 6.5x54 ms and maybe, the 7x64, the 8x57 and even the 6.5x57 too (although that one wasnt developed for military use). So some of the "oldies" might just find themselves well suited for the mono-era of hunting :)
 
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Been saying that for a while - the perfect vintage, and, future chambering
yep, and going 20 or so down on grns for mono projectiles intended for the same quarry vs if it was a lead projectile, also, speed wise, bumps the 7x57 case capacity catridges up a class too, which suits the non fragmenting monos according to most users.

So basically @harrygrey382 is likely future proofing his rifle build fairly well, going with the "old 7". :)
 
Plz let us know how that goes, Olaf. :)

as for @harrygrey382 plz keep the updates coming, and best of luck with completing this very cool project. :cool:
I sat out on Sunday night overlooking some organic potatoes that are getting hammered by the wild boar here where I hunt when in Niedersachsen . Alas , they did not show up that night. So, the new 7x57 barrel and it’s 140 gr non lead bullet pairing are yet to be tested out in the hunting fields.
Here’s my schultz and larsen carrying its 7x57 barrel. I’m really interested to see how that compares to my well used .30-06 barrel.
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Kindest regards, Olaf
 
I sat out on Sunday night overlooking some organic potatoes that are getting hammered by the wild boar here where I hunt when in Niedersachsen . Alas , they did not show up that night. So, the new 7x57 barrel and it’s 140 gr non lead bullet pairing are yet to be tested out in the hunting fields.
Here’s my schultz and larsen carrying its 7x57 barrel. I’m really interested to see how that compares to my well used .30-06 barrel.
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Kindest regards, Olaf

Why did you face your front ring the wrong way ?
 
Hello Olaf :-) well to see a nice S&L always warms a danish heart ❤️ 😉 And S and L do have a name for very good craftsmanship! So i'd assume that the barrel and action should make a good match indeed, and thus set a good foundation for success.
As for going from the 30-06 to the 7x57, what is it one of those famous old timer american gun writers once wrote ? It was something ala " that a 7x57 is pretty much ballistically akin to the 06, just with 20-25 grns ligther bullets". And, quite fortunately, that also entails the SD and BC , if the same bullet type is used in the two caliber sizes.

And this is not to mention the historical connection between the two, with the 06 allegedly being quite inspired by the 7x57. So if you were to switch from your 06, you seem to have "kept it in the family", so to speak😉
 
I can confidently say these S&Ks are the nicest mounts I’ve both seen and handled - superb machining and finish and a fantastic design, both very strong and look very nice and sleek. I hate the look of 98% of the mounts out there, these tick all the boxes. I don’t think I’ll ever buy a different brand so long as they keep making them.
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I agree they are very nice indeed. Sadly, it would appear the majority of UK sporting rifle enthusiasts have little interest in the aesthetics of scope mounting.

The following extended S&K bases, comprising epoxy loaded with aluminium filings, will be machined to a level that provides perfect scope height to permit air-rifle pellet magazine use:
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Why did you face your front ring the wrong way ?

Because, because 🤣 back then I didn’t have very much money, they were what I had and fitting the front mount the ‘right’ way round it didn’t fit as well, bringing the scope too close to my eye. I had those Apel mounts and they worked in that configuration, so I used what I had at my disposal and it worked fine so it’s stayed like that.


Kindest regards, Olaf
 
Hello Olaf :-) well to see a nice S&L always warms a danish heart ❤️ 😉 And S and L do have a name for very good craftsmanship! So i'd assume that the barrel and action should make a good match indeed, and thus set a good foundation for success.
As for going from the 30-06 to the 7x57, what is it one of those famous old timer american gun writers once wrote ? It was something ala " that a 7x57 is pretty much ballistically akin to the 06, just with 20-25 grns ligther bullets". And, quite fortunately, that also entails the SD and BC , if the same bullet type is used in the two caliber sizes.

And this is not to mention the historical connection between the two, with the 06 allegedly being quite inspired by the 7x57. So if you were to switch from your 06, you seem to have "kept it in the family", so to speak😉
Quite, I agree, from what I studied on the subject before purchasing the 7x57 barrel, it’s the somewhat more lightly built and older European born brother of the .30-06. It’s not a .30-06 and never will be . but, used in conjunction with certain bullet and powder combinations it’s a very nice chambering that, I hope will be a pleasure for me to learn to hunt well with.
Kindest regards, Olaf
 
Hello again Harry :) - it likely will i would think, given the huge amounts of 7mm users out there. :thumb:
And if the day comes where you, like us here in Denmark, have to all lead free with your hunting ammo, your twist rate should support that quite well too. :)

All of Harrys awesome build pictures of his work progression on his 7x57, and our talk about its potential, makes me think of this article that Jack O'Connor wrote on the "old little 7": Forty Years with the Little 7mm

Now he wrote that a good while back, obviously, before the development of the modern mono projectiles, but with its (cip) chamber dimensions and typical barrel twist rates the 7x57 might actually, even being 130 or so years old, be looking quite well suited for the immediate to mid term future too. 🤠
It’s an Interesting little read that : Forty Years with the Little 7mm article you linked. In it he says ………” Even when the charge is tightly compressed it is possible to get only about 53 grains of 4350 or 4831 powders into the Western 7×57 case”…… quite astonishing; I mean, I’ve read that ‘modern’ factory made cartridges are very mildly loaded to provide safe ammunition for shooters using very old potentially weaker built rifle Acton’s and barrels. My Lee loader manual and nosler manuals give a maximum load for 140 gr bullets of over a whooping 10 grains less nitro than that. Do you or anyone else , civilised enough to be following this exciting thread , have any published load data that states such high power loads ? Or, did the old school just fill up 7x57 cartridges to the brim , wipe off the top of the cartridge and then crunch a bullet down on top of it all and hope for the best 😂?
Kindest regards, Olaf
 
It’s an Interesting little read that : Forty Years with the Little 7mm article you linked. In it he says ………” Even when the charge is tightly compressed it is possible to get only about 53 grains of 4350 or 4831 powders into the Western 7×57 case”…… quite astonishing; I mean, I’ve read that ‘modern’ factory made cartridges are very mildly loaded to provide safe ammunition for shooters using very old potentially weaker built rifle Acton’s and barrels. My Lee loader manual and nosler manuals give a maximum load for 140 gr bullets of over a whooping 10 grains less nitro than that. Do you or anyone else , civilised enough to be following this exciting thread , have any published load data that states such high power loads ? Or, did the old school just fill up 7x57 cartridges to the brim , wipe off the top of the cartridge and then crunch a bullet down on top of it all and hope for the best 😂?
Kindest regards, Olaf
Small manufactorers didn`t have access to pressure testing equipment and shooters didn`t have chronografs, it was in the 1990s cartridge manufactorers had to stop lying about speed (or sometimes they still doo).
 
It’s an Interesting little read that : Forty Years with the Little 7mm article you linked. In it he says ………” Even when the charge is tightly compressed it is possible to get only about 53 grains of 4350 or 4831 powders into the Western 7×57 case”…… quite astonishing; I mean, I’ve read that ‘modern’ factory made cartridges are very mildly loaded to provide safe ammunition for shooters using very old potentially weaker built rifle Acton’s and barrels. My Lee loader manual and nosler manuals give a maximum load for 140 gr bullets of over a whooping 10 grains less nitro than that. Do you or anyone else , civilised enough to be following this exciting thread , have any published load data that states such high power loads ? Or, did the old school just fill up 7x57 cartridges to the brim , wipe off the top of the cartridge and then crunch a bullet down on top of it all and hope for the best 😂?
Kindest regards, Olaf
hello Olaf, and good spot!
O-oh, i think we risk opening up a can of worms here, as the subject of to which pressures one can safely load one many of the classic old european cartridges if it is done for strong modern rifles and actions and with good brass etc has been discussed vigorously on here before. And i dont recall any consensus being reached.
I actually myself tried to create a single thread to collect the ideas and opinions on the matter here: Pressure limits in older european calibers, - do they make sense with modern actions and brass?? But even then i dont think a final conclusion that most could agree upon was reached.
And bringing it all back home to this very thread, didnt @harrygrey382 state that he might load his 7x57 all the way up to early to mid 60 ks ? (Edit: see post #31).

But back to Jack, - Jack was a reloader, and i think a good few of his loads have been known to be "on the hot side", and not just for the 7x57 but for his 30-06s and 270s as well. This doesnt mean that they were unsafe, in his actions or rifles of course.
As mentioned i am not sure many, Jack included, has much access to pressure testing when building up loads back then, so i could imagine that Jack took an outset in what data he could get access too, and then used his experience from there, probably looking for the same typical signs of (over)pressure that many of us still do to this day, when reloading. But that is just a theory of course.
Another element that could help explain the 53 grns quoted, (other than a typo of course), could be that the specific powders and projectiles used back then are slightly different today. Changes can after all happen to a project over 50-80 years, even if the name doesnt change much.

But yes, Jack OConor might also simply have been loading his 7x57 more aggressively than what many manuals suggest today. Another gun writer, Johns Barness is also a big fan of the little 7, and writes about what he believes could be terms as safe modern loads for the 7x57. But tbh Normas quoted 7x57 loads of today seem to be pretty fast, and i assume that iswhen sticking to the cip limits of 50.565 psi max pressure.
So a valid question might also be if there is much need to push the 7x57 loads much beyond that sort of pressure to chase another 50-75 fps and a bit more energy, if the precision, power and speeds are good at 56.5ks of pressure, and the rifle still feels nice and smooth to shoot ? Maybe if one is occassionally open plains or mounting hunting and could need to stretch it a bit at times?

But each to their own, i just hope that whatever path is chosen, all follows good and safe practice. :-)
 
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hello Olaf, and good spot!
O-oh, i think we risk opening up a can of worms here, as the subject of to which pressures one can safely load one many of the classic old european cartridges if it is done for strong modern rifles and actions and with good brass etc has been discussed vigorously on here before. And i dont recall any consensus being reached.
I actually myself tried to create a single thread to collect the ideas and opinions on the matter here: Pressure limits in older european calibers, - do they make sense with modern actions and brass?? But even then i dont think a final conclusion that most could agree upon was reached.
And bringing it all back home to this very thread, didnt @harrygrey382 state that he might load his 7x57 all the way up to early to mid 60 ks ? (Edit: see post #31).

But back to Jack, - Jack was a reloader, and i think a good few of his loads have been known to be "on the hot side", and not just for the 7x57 but for his 30-06s and 270s as well. This doesnt mean that they were unsafe, in his actions or rifles of course.
As mentioned i am not sure many, Jack included, has much access to pressure testing when building up loads back then, so i could imagine that Jack took an outset in what data he could get access too, and then used his experience from there, probably looking for the same typical signs of (over)pressure that many of us still do to this day, when reloading. But that is just a theory of course.
Another element that could help explain the 53 grns quoted, (other than a typo of course), could be that the specific powders and projectiles used back then are slightly different today. Changes can after all happen to a project over 50-80 years, even if the name doesnt change much.

But yes, Jack OConor might also simply have been loading his 7x57 more aggressively than what many manuals suggest today. Another gun writer, Johns Barness is also a big fan of the little 7, and writes about what he believes could be terms as safe modern loads for the 7x57. But tbh Normas quoted 7x57 loads of today seem to be pretty fast, and i assume that iswhen sticking to the cip limits of 50.565 psi max pressure.
So a valid question might also be if there is much need to push the 7x57 loads much beyond that sort of pressure to chase another 50-75 fps and a bit more energy, if the precision, power and speeds are good at 56.5ks of pressure, and the rifle still feels nice and smooth to shoot ? Maybe if one is occassionally open plains or mounting hunting and could need to stretch it a bit at times?

But each to their own, i just hope that whatever path is chosen, all follows good and safe practice. :-)
Nice reply, thanks for the link to another interesting thread too.
I agree on not chasing more velocity with the risk of overcharging. For my intended 7x57 use I’m quite happy with the velocity I can get from my current 140 gr cartridges. They are somewhere between 2600 and 2700 fps and the 120gr are around 3000 fps. All more than enough for the type of hunting I’m going to be using it for.
But man alive, that chap was certainly fond of pushing things with his handloads by the look of it 😂
Kindest regards, Olaf
 
Nice reply, thanks for the link to another interesting thread too.
I agree on not chasing more velocity with the risk of overcharging. For my intended 7x57 use I’m quite happy with the velocity I can get from my current 140 gr cartridges. They are somewhere between 2600 and 2700 fps and the 120gr are around 3000 fps. All more than enough for the type of hunting I’m going to be using it for.
But man alive, that chap was certainly fond of pushing things with his handloads by the look of it 😂
Kindest regards, Olaf
Hello Olaf, and thanks :) And yes, it could seem that Jack O'Connor liked his loads a bit on the hot side 😉 🤠

But tbh if we consider this statement by O'Connor "I used the 140-gr. Nosler bullet in front of 45 grains of 4320. Velocity in my Model 70 with 22-inch barrel is 2,825. This is the velocity I get in the same rifle with the Dominion 139-gr. bullet load. The Federal load, with the 139-gr. bullet, produces somewhat less velocity." it is actually more or less around the velocities that john barsness also suggests as modern safe loads for the little 7, which are pretty much speeds akin to to the 7mm08 loads for the same bullets.

Now the max cip operating pressure for a 7mm08 is 60.191 psi, and if one then then considers that the 7x57 has a larger powder capacity and chamber, i think it is a logical deduction to assume that the x57 reaches 7mm08 speeds at a slightly lower pressures, which would likely keep it at under 60 k.

So whilst Jack didnt have access to modern powders, maybe his loads wernt that crazy either still 😉 And check out these modern Norma loads: 7x57 MAUSER | Reloading Data for hand loading ammunition
Pretty "modern speeds" too i'd say, and giving it's Normas official data i very much assume that they are staying with the cip max pressure limits of 56.565 psi. But again one should load safely as to ones own needs imo. Not all 140 grn needs to be pushed out at just below 2875 fps after all, even it is possible to do so safely. it depends largely on ones own needs and preferences i'd say :)

PS. once i start building my own loads for the 7 in the comings months, maybe i shall start a "the little 7s reloading thread". That way we can share our collective experiences, and help each grow in knowledge and ability faster, (and of course spend some enjoyable time reading about it on here too ,-D ).

For now though, i think we can all agree that we think @harrygrey382 made a very good choice in going for the little old 7, and that following his build is pretty cool :cool:🏕️
 
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an excellent suggestion to start a reloading thread on the 7mm Mauser. Thanks for the interesting link too, I will have a look at that tomorrow. And, I 100% agree, the OP has started a super thread on the 7x57. I can’t wait to see its progress unfold.
Kindest regards, Olaf
 
well - this discussion has progressed! Great input guys, love hearing about others' interest in the round and brining it into the 21st century. That was a good read Olaf, even if it took a while to get through it. He had refreshingly modern ideas for the time and makes some good points. In regards to loading - intend to approach it backwards from what some do. Pick a projectile carefully, which dictates the desired impact velocity range, which after picking intended shooting ranges dictates the required muzzle velocity. Along with barrel length, this will dictate roughly the charge I'm aiming for. Obviously shooting for low recoil and 2300 fps this poses no pressure issues (I'll likely start with ADI 2206H AKA H4895 as its low charge friendly).

IF I end up wanting to stretch out I had a play on GRL and looks like 65k will get me 2900 fps ish with the 162gr ELDM and my chosen seating depth (98 mag doesn't limit this - nor does a SAAMI 7x57 throat). Now I don't intend to start out with this, but it is in the back of my mind that it is possible. There is absolutely no reason why 65k isn't safe in a post WWI 98 action, or any other modern bolt action. 6mm rem uses the same parent brass and is SAAMI specc'd to 65k. It was once suggested by an ill informed member here that 6mm rem used +p 257R brass as the parent. This was pure fabrication on his part. Not only is this incorrect, but +p 257R brass is both thinner than some brands of 257R brass and it is categorically stated in several sources 7x57 brass was always used. Along with the fact cutting open standard (S&B) 7x57 brass showed it no thinner in the web than 270 (65k spec). There was another false analogy - that of using 416 rigby as the parent of 338 lap and the brass not being strong enough for the pressure and thereby beefing the web up. Well 416 has notoriously thin brass and was noted for case head separation at much lower pressure, and was specced for a far lower pressure in the first place. Once again a thoroughly poor argument. Given that bad things don't start happening until 68k plus in a good action with good brass, there really is no doubt there is no harm in theoretically taking 7x57 (or many other modern bottle necks for that matter, however there are exceptions) to this generally accepted across the board limit. Don't forget people regularly hot rod long range cartridges with regular brass cases in modern actions to 70-80k in the US with no ill affects other than reduced brass life.

It goes without saying this is more advanced level reloading, but none the less applying mechanical principles it holds true. The really big practical kicker is knowing where that 65k sits in charge weight - where as a 6mm rem will tell you in a book, 7x57 won't. My method is using GRL (or QL if you want to pay the several hundred pounds) to find the desired speed/pressure and use a chrony to keep things in check. Now I've input water volume and weather parameters I've found GRL to correctly predict MV within 25 fps. Obviously this is still not 100% - other usual pressure warnings need to be observed, and the ambient temp needs to be factored in (ie be careful load developing in winter and shooting in summer - can easily be 30*C different). I'd rather do load developing in summer, although ADI rifle powders are pretty stable.

Obviously there is an argument you don't need to push it. Well you could also say there is no need for the existence of a 7mm rem mag, 7 PRC, 280, 7x64 etc.. Sometimes you want more velocity for one reason or another. There is no reason for a 7x57 to perform less than the smaller 7-08. In fact 7-08 does provide good starting loads - if it's safe in a 7-08 its safe in a 7x57. Having said all that I went and shot a big billy at 150m a couple of days ago with my Type B. It was my longest shot yet. Zerod pretty much bang on at 100m - not much point going higher as 200 isn't really possible for me with iron sights (Lyman 57). He was lying down, asleep, quartering towards me. I aimed centre of shoulder so it would drive back through the rib cage. I lay prone, had no rest so elbows on the ground. The great thing about irons is you can't see the wobble! I could hear I hit him but doubted for a few seconds as he remained absolutely motionless, no registration of impact. I walked all the way up to him and found he'd died instantly - his head still tucked into his offside shoulder. The bullet had obviously ploughed straight through and done massive and instant internal damage. The 154gr RN was doing 2550 at the muzzle when I last chrony'd, but I'd say its sped up a bit as the barrel is wearing in as I had to move move the sights down a bit recently. Should recheck the speed.
 
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Back in the day the original high velocity loads for the 7x57 / 275 Rigby were a 140 grain bullet at 2800 fps.

They did have accurate chronographs in those days. Ballistic Pendulums or two screens set up which recorded the time of flight between the two screens. Time of flight was measured on a falling rod with spring loaded blades triggered by break in circuit as bullet went through the screen.

Both required careful set up and lots of maths. And the kit was expensive - it was available to ammunition manufacturers etc rather than home loaders.

By the early 1970’s chronographs using shadow of the bullet and electronics were commercially available. Expensive and finicky. And lets not forget all the moonlanding calculations, fast jets or the 1959’s and 60’s etc were all done by teams of calculators using pencils, papers and slide rules.

And by measuring drops you could reverse engineer velocities.

Going back the 7x57 and anaemic loadings, I don’t quite know why we haven’t got the equivalent of the 6.5x55 SE loading, where those clever Swedes have produced full throttle loads for modern rifles. I suppose in Scandinavia the 6.5x55 has remained in service and is still the standard full bore load in shooting competitions. Whilst widely used as a military cartridge the 7x57 went out of military service as bolt action rifles became obsolete and armies switched over to automatic rifles such as FNFAL which were chambered in 7.62 Nato. The FN 49 - the FALs pre cursor was chambered in 7x57 and adopted for a while by the likes of Argentina and other Latin countries in small numbers. Although most switched over to the FAL in 308 in the late 1950’s and 1960’s.

As a sporting round, the 7x57 was always a “gentleman’s cartridge“. It was mostly only available in higher quality rifles and never had much of a following in the USA. The 270 Win on the other hand became the widespread deer hunting cartridge.

In Europe, the 7x57 suffered for a few decades by being classed as a military cartridge and thus illegal for civilian use in Spain, France and in other jurisdictions. One of the reasons why the 7x64 is widely used in Europe as it was never a military cartridge.

With modern data in rifles with decent actions the 7x57 is thoroughly up to date.
 
Anyway, reloading aside - onto an update. The reason for the quiet is I’ve been struggling with the bluing. The method that worked perfectly for the previous two guns has failed me - for no apparent reason. The main issue I’ve been having is the rust has periodically refused to convert, which normally indicates too much rusting. But that hasn’t been the case. Also it’s patchy, which given the number of cycles and the surface prep, doesn’t compute either. My only idea is the colder temperatures I’ve been rusting in and therefore a less even rust coating? Either way, it’s done for the moment but I’m not happy with it and will be stripping and re doing it when I can, after I’ve done more experimenting for a new reliable method. But for the moment I need to keep this rolling, so I’ll use as is.

Cleaned the guard screws up by peening around the slots then grinding back, and the last wet sanded tung oil is pretty much dry so will move on with the stock next. Will see how the scope looks on it this weekend too



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Nice reply, thanks for the link to another interesting thread too.
I agree on not chasing more velocity with the risk of overcharging. For my intended 7x57 use I’m quite happy with the velocity I can get from my current 140 gr cartridges. They are somewhere between 2600 and 2700 fps and the 120gr are around 3000 fps. All more than enough for the type of hunting I’m going to be using it for.
But man alive, that chap was certainly fond of pushing things with his handloads by the look of it 😂
Kindest regards, Olaf
Quite a few of the old loads are well above recommended max nowadays.
We could say that the rifles are older or we could say that publishers of reloading information are more risk averse.
Either way, its a fact that max loads from the 70’s and earlier are a tad more energetic than current offerings.
 
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