Now be honest, you’ve slaggged that rifle off recently
Barrel length??
- Thread starter Utectok
- Start date
Gladius | G.A.Precision
New for 2023: built on an Impact 737R** All integral action with built in recoil lug and 20 MOA scope rail Mini m16 style extractor standard.
www.gaprecision.net
So not at all relative to the OP as its a different cartridge that runs well on a short barrel!Gladius | G.A.Precision
New for 2023: built on an Impact 737R** All integral action with built in recoil lug and 20 MOA scope rail Mini m16 style extractor standard.
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QL is showing near enough a 200 fps drop with my 120 gr NBT load if I go from 24-18" - that is a step up that people go up a cartridge for, say .308 to 30-06, just by having a sensible barrel length and making use of the powder! The cartridge was originally fired from a rifle with a 29" barrel so 24" is already a chop!!
Leec6.5
Well-Known Member
I have indeed, but shooting a fox at range and shooting a red at range are 2 completely different things!
Back then i was cocky and a much better shot than i am now
Now i stick to 300 max
The sweede simply does not have the legs for shooting big stuff at range, thats why i bought a 270!
Pretty much why I got the .280, not that the swede hasn’t necessarily not got the legs but the .280 certainly has more.
But shortening the barrel on a swede hampers it’s ability, at 300 yards 2850 vs 2650 with a 120 means 10% less energy.
From one of my 20” M7 260s a 120 TTSX will get you 2750fps or a bit more. That’s good for 400 yards with an impact velocity of 2000fps. My 24” M700 260 gets an extra 100fps (same load) which gains less than 50 yards for a 2000fps impact velocity. Standard cnc bullets I use are an easy 2900fps with room to spare if I stepped on the scale a little harder. 129s are 2850fps.
I’m glad I’m not hampered with having to use solid coppers, which I occasionally use for deer. If I know I’ll be shooting in the woods I grab my M7 and coppers otherwise it’s the old standby cnc or bonded. Been using 223 with a TMK and am actually asking myself why I’m using bigger for WT deer.
I’m glad I’m not hampered with having to use solid coppers, which I occasionally use for deer. If I know I’ll be shooting in the woods I grab my M7 and coppers otherwise it’s the old standby cnc or bonded. Been using 223 with a TMK and am actually asking myself why I’m using bigger for WT deer.
PhilSN12
Well-Known Member
What bull****!
It was me with my Sig Cross in 6.5CM with an 18" barrel shooting Winchester Deer Season XP 125g & I never said anything about it dropping subsonic at 500y.
StrelokPro puts it at 1919 fps at 500y using the reading I took from my chrono at the barrel.
Don't miss quote me again to justify your personal narrative.
Utectok
Well-Known Member
Who’d have thought people would get so excited about this!? So many experts (“that’s what I’ve got and it’s the best”) and so little room. Lol thanks everyone.
Clearly I need a 16” woodland rifle in .308 a 20” stalking rifle in .270 and a 24” long range one in 6.5 prc …. And a 30” one in 7mm SAUM for proper long range gong bashing.
I’m also thinking the deer and gongs won’t real notice what I’m holding?
Clearly I need a 16” woodland rifle in .308 a 20” stalking rifle in .270 and a 24” long range one in 6.5 prc …. And a 30” one in 7mm SAUM for proper long range gong bashing.
I’m also thinking the deer and gongs won’t real notice what I’m holding?
PhilSN12
Well-Known Member
I have never said what I have is the best, that everyone should have one or that I am an expert.
When someone asked a question all I did was let him know the results I had with the combination I use. The more information someone has from different sources helps build a better picture to make a decision on a purchase.
When someone asked a question all I did was let him know the results I had with the combination I use. The more information someone has from different sources helps build a better picture to make a decision on a purchase.
can you now use monolythic bullets at ranges then? Barrel length isnt an issue that matters stalking inside 500 and if you feel it a slow you can use a faster powder that will compensate some. playing at steel off in the hills( none certified range) doesnt really matter if your mate has something a bit more suited anyhow does it ? If your going moderated you certainly dont want the longer barrels fitted when your stalking proper pita
Or do it all with a 24” swede
Depends entirely on your stalking.
I have decided to keep the 27” .308 in the classifieds and get it chopped to 20” to see what the fuss is all about (won’t be changing the 25-45, .280 or the swede though)
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Heym SR20
Well-Known Member
Barrel is all a matter of physics and personal choice
I like longer barrels. I am 6ft with long arms and short little barrelled rifles are nasty, noisy kicky little things. I prefer 22” minimum, and quite happy with 24 or 26” with a moderator on the end. I tend to carry my rifle in hand, rather than slung. But I do have sling mounts on the barrel which works for me.
In terms of physics a short barrel has less time to burn powder. Historically most velocities published are based on 24 or 26” barrels.
Shorten barrel you loose velocity.
With a short barrel you need greater acceleration to get up to the same speed in a shorter distance.
To achieve this you either need more pressure, to give more force to give more acceleration. Ie you increase powder charge.
But you can also change powder characteristics. A faster burning powder will give up all its energy in the shorter time it takes to accelerate the bullet up to velocity down a short barrel.
But in physics there is always an equal and opposite reaction. In rifles of the same weight, burning same weight of propellant and using the same bullet at same velocity, a short barrel with faster burning powder will have a much snappier recoil than a long barrel with a slow powder which will have more of a shove.
Short barrels may or may not be more accurate. They are though cheaper to make - less material etc. And are stiffer, just because they are shorter.
In the old days or iron sights, a longer barrel gave longer distance between front and rear which helps with accuracy, and a long barrel with bayonet keeps the enemy a bit further away so your uniform doesn’t get messy when you stick them.
But these days optical sights don’t need long sight base, and our military / swat teams like short rifles for jumping in and out of vehicles and these fashions trickle down.
I like longer barrels. I am 6ft with long arms and short little barrelled rifles are nasty, noisy kicky little things. I prefer 22” minimum, and quite happy with 24 or 26” with a moderator on the end. I tend to carry my rifle in hand, rather than slung. But I do have sling mounts on the barrel which works for me.
In terms of physics a short barrel has less time to burn powder. Historically most velocities published are based on 24 or 26” barrels.
Shorten barrel you loose velocity.
With a short barrel you need greater acceleration to get up to the same speed in a shorter distance.
To achieve this you either need more pressure, to give more force to give more acceleration. Ie you increase powder charge.
But you can also change powder characteristics. A faster burning powder will give up all its energy in the shorter time it takes to accelerate the bullet up to velocity down a short barrel.
But in physics there is always an equal and opposite reaction. In rifles of the same weight, burning same weight of propellant and using the same bullet at same velocity, a short barrel with faster burning powder will have a much snappier recoil than a long barrel with a slow powder which will have more of a shove.
Short barrels may or may not be more accurate. They are though cheaper to make - less material etc. And are stiffer, just because they are shorter.
In the old days or iron sights, a longer barrel gave longer distance between front and rear which helps with accuracy, and a long barrel with bayonet keeps the enemy a bit further away so your uniform doesn’t get messy when you stick them.
But these days optical sights don’t need long sight base, and our military / swat teams like short rifles for jumping in and out of vehicles and these fashions trickle down.
Utectok
Well-Known Member
Agreed but gongs at 1000 is a different propositionYou lot think too much!
Chrono your load, roll them up and then shoot them!
No bloody wonder there is too many deer about woth all you lot yacking on about barrel lengths
Utectok
Well-Known Member
I know who cares... all deer legal loads do the job.... but it's a bit of fun coming to your own conclusions isn't it ?
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