Mini mauser, Roe legal caliber re-barrel
- Thread starter karamoja
- Start date
From a 22" barrel???
Shorter than that, @Stupaz was the person who done it with the 300blkout, nice calibre to shoot as well
300 HAM'R would be my choice. Should get 1700ft.lb from a short barrel.
Otherwise open the bolt face and go 7.62x39 or Grendel.
Otherwise open the bolt face and go 7.62x39 or Grendel.
No, 6x45 will do about 1500 ft.lb
I can't believe you've just said that!If a hornet kills munties the 222 will be just fine for roe. Keep using it and don’t tell anyone.
Obviously I can’t speak from personal experience, but I have it on good authority.I can't believe you've just said that!
jthyttin
Well-Known Member
Like said 300 HAM'R or some other 30cal 223 boltface AR-15 niche cartridge. There's been a ton of research on AR-15 alternative chamberings, and it seems below 30cal you're making the life too difficult to achieve the energy. You have it easy in UK, only having to satisfy muzzle energy/velocity so larger cal bullet is always beneficial in restricted volume / OAL situations.
125gr at 2500fps would be quite sweet and you have a choice of SP or variety of tipped bullets. Want a bit flatter trajectory, drop down in weight although choice would be limited. Even in non-lead you have the "blackout option" i.e. bullets designed for 300BLK like Barnes 110gr. So all bases covered, go on and order a reamer!
125gr at 2500fps would be quite sweet and you have a choice of SP or variety of tipped bullets. Want a bit flatter trajectory, drop down in weight although choice would be limited. Even in non-lead you have the "blackout option" i.e. bullets designed for 300BLK like Barnes 110gr. So all bases covered, go on and order a reamer!
It works 222r are legal for roe in Sweden, they are not armor plated like in England.Obviously I can’t speak from personal experience, but I have it on good authority.
I get 2375fps with 110-115gr in my 300blk 17" barrel length ~1300ft-lbs, 1400 are possible, 1700 would be way out of my comfortzone. 300HAMR are the way to go.
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Not my data, but from a 16.25 barrel
"This is the load data for the supersonic load. You will see that BTO is significantly longer than standard to accommodate the extra powder which initially concerned me but testing went perfectly. You would need to check that a round of that length will fit the magazine and will chamber so an OAL gauge check is needed. Luckily both are fine in my rifle."
| Calibre | Variant | Brass | Bullet | Primer | Powder | Case Trim | COAL | BTO | Velocity | Energy ft/lbs |
| 300BLK | Lead | Reformed 223 | 125Gn SST | CCI400 | 22.5Gn Lil Gun | 1.358In | N/A | 1.630In | 2493fps |
[td]
1727
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1727
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I absolutely love my 25-45, its my second most used rifle after the .280, its built on a Tikka M595 action that started out as a .222. It has a 25" barrel and after a lot of messing about over the course of a year i now know which powders and bullets will work to get it to 1750 ft-lb (to give a little margin), I have good 80, 90 and 100 gr deer legal loads.
But if I was to do it all again I'd just go 6.5 Grendel, loads of data and bullet options and it should do deer legal from a 22" easily enough.
@JL Grendel stalks with one and has done for a few years, not sure on his barrel length though.
The only issue is if this could be replicated with copper bullets when the lead ban comes in to play.
As above, using the little brother, 25" 1:10.
Assuming that the same powders work I am using
Reloader 7 - 80 gr Barnes TTSX
Lovex DO73.5 - 90 GR SMK
Lovex DO73.5 - 100 GR SGK
All around 1740-1780 ft-lb
In my opinion the little extra case volume with the .204 case would be worth it, but possibly only with a long barrel to make use of the powder. It does need to be run at the top end of the allowable pressure so I only use magnum primers, CCI450 or generally BR4s, my rifle is throated long, so my seating length is 2.450" for the barnes (as opposed to 2.260" for 0.223). For this to work I have had to modify the magazine on the tikka by moving the rear spacer back and extending the rear of the follower with aluminium epoxied in place. The Walters Rifleman mag I have is set up for longer 0.223 variants and allows COAL of 2.4" from memory.
That will be the other consideration with the longer case, there's no point if the magazine of the rifle will restrict the COAL as any powder space gained will be eaten up by the bullet - assuming you want to mag feed.
My other concern is what I will find to replace the reloader 7 when I run out.
As above, all things considered, if doing this again I'd go for a grendel!
Congratulations your load are 300fps faster than Hornady and Noslers.
Perhaps read the first three words of my post, nothing to do with me, I was trying to help someone, as you raise the point though, were the Hornady and Noslers shot through a 16" barrel or in lab conditions with a longer barrel
I run 95gr VMax from my 6.5 Grendel at 2750fps
Thats from 27.5gr of N130 which is a VERY moderate but accurate load
Its also from a 19" barrel
30gr in a 22" gets you 2900fps and the mythical 1750ftlbs (1776ftlbs)
To be honest you don't need it
At no point have I thought I was undergunned or worried about energy or efficacy
The combination of the highly frangible bullet and the moderate terminal velocity leads to very clean carcases and very quick death.
Zero exits on large deer with clean entry and demolished internal organs.
Stags, hinds, roe, munties
All fallen to the mighty Grendel
Thats from 27.5gr of N130 which is a VERY moderate but accurate load
Its also from a 19" barrel
30gr in a 22" gets you 2900fps and the mythical 1750ftlbs (1776ftlbs)
To be honest you don't need it
At no point have I thought I was undergunned or worried about energy or efficacy
The combination of the highly frangible bullet and the moderate terminal velocity leads to very clean carcases and very quick death.
Zero exits on large deer with clean entry and demolished internal organs.
Stags, hinds, roe, munties
All fallen to the mighty Grendel
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