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forming 22-250 brass from .308?

Discussion in 'Handloading and Reloading' started by fireman 9731, Dec 28, 2008.

  1. fireman 9731

    fireman 9731 Well-Known Member

    I know that the 22-250 case is just a necked down .308 cartridge. and since there is plenty of .308 brass out there, can I just use my regular 22-250 dies to reform 308 brass?
  2. moosehunt

    moosehunt Well-Known Member

    But why? What a pain in the butt for no significant savings--and don't forget, you'll have to turn the necks because they will be too thick. But, yes, you can. Be sure and use Imperial Sizing Wax or equivalent (is there such a thing?) or you will definately have problems. And you'll need to anneal them after you trim them. You'll have some failures. If you're set on this, you might run them in a .243 or .260 die first to cut down on failures. Hell, be all-pro and go through a 7mmm-08, then a .260, then a .243, THEN your .22-250 die! If you want to go for the gusto, you can make your .22-250 brass out of .30-06 brass, or even .35 Whelen. Heck, just buy .30-06 basic and really form your own if you want to say you really did something! Why go halfway?!!
    Last edited: Dec 28, 2008
  3. R.W.Dale

    R.W.Dale Well-Known Member

    I will form cases for cartridges where brass is either hard to find or expensive.....22-250 is neither of those

    MMCSRET Well-Known Member

    22-250 is cheaper than 308. I'm standing here beside myself.
  5. fireman 9731

    fireman 9731 Well-Known Member

    Ok guys, thanks for the info!

    just a wild thought last night...
  6. The Bushmaster

    The Bushmaster Well-Known Member

    Excuse me? But isn't .22-250 a necked down .30-06 case? And isn't a .308 a shorter case then either .22-250 or the .30-06?

    Just how do you expect to form .22-250 from a .308?

    I'm a bit perplexed on this...Enlighten me, please.
  7. jjohnson

    jjohnson Well-Known Member


    No, Sir, the 22-250 is NOT a necked down 30-06. The 30-06 is WAY longer than the 22-250 case.
  8. Auburn1992

    Auburn1992 Well-Known Member

    The 22-250 is actually a necked down .250 savage - which is pretty close to a .243.
  9. EShell

    EShell Well-Known Member

    The .22-250 is a necked down .250 Savage case, and both are shorter than a .308 Winchester.

    I've necked .308s to make .22-250s. The purpose was to provide a very thick neck which could be neck-turned in order to produce a fitted neck condition in a factory style chamber. The rifle was quite accurate, and had relatively tight dimensions in all aspects except a very generous neck diameter. I was in my "benchrest" phase of this illness.

    I necked the .308 to .260, then to .243, then to .22-250. It was a VERY tedious process and case losses were high. The .22-250 neck formed in this manner is actually a portion of the former .308's case wall/shoulder junction and is VERY thick. Trying to reform this area to meet the .22-250 shoulders often resulted in case collapse.

    In retrospect, a .250 Savage F/L sizer would have helped, because I could have reformed the shoulder and neck in separate steps, thus with less pressure. It would have also suited my own purposes as well had I started with .243 brass, since the body thickness that ends up being the .22-250's neck is about that of a .308.

    Realistically and even if the .308 brass was free, by the time one procures the several intermediate dies and neck turning/reaming equipment necessary to make this work, and pays even $1/hour for labor, it would be far cheaper to just buy brand new .22-250 brass.

    After ruining about 30 cases, I did produce about 20 usable cases in about 30 hours that showed no accuracy improvement, so the ill-conceived idea was scrapped.
  10. moosehunt

    moosehunt Well-Known Member

    A .22-250 case is a necked down any of those. It has the same head size as all mentioned, and that head size originated with the .30-06--no, actually the .30-03. So in the most technical sense, it (and all those others mentioned plus a bunch) is a necked down .30-03, which of course is basically the same case as the .30-06. A .22-250 case is shorter than a .308 case.
  11. jjohnson

    jjohnson Well-Known Member


    Hey, thanks for explaining in detail your experience. Some of us look at cool "what if" experiments and wind up re-creating something that wasn't worthwhile in the first place. I think what you just told us will answer what everybody reading this thread will need to understand.;)

    MMCSRET Well-Known Member

    Actually the case head dimensions date back to the early Mauser smokeless rounds: 7.65X53 Belgian Mauser and 7X57 Mauser, predating the 30-03 by at least a decade.
  13. moosehunt

    moosehunt Well-Known Member

    Indeed, you are correct! And incidently, technically, the head and rim of the .22-250 is a few, i.e. 3, thousandths smaller than .308. Not significant, though.
  14. The Bushmaster

    The Bushmaster Well-Known Member

    Then what we are saying is that the .22-250 IS a run off of the .30-06/.30-03...

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