45acp gets longer From recoil

45acp gets longer From recoil

This is a discussion on 45acp gets longer From recoil within the Defensive Ammunition & Ballistics forums, part of the Defensive Carry Discussions category; I shot some blazer 45acp in a revolver and the rounds in the cylinder that were not fired got a little longer than from the ...

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Thread: 45acp gets longer From recoil

  1. #1
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    45acp gets longer From recoil

    I shot some blazer 45acp in a revolver and the rounds in the cylinder that were not fired got a little longer than from the box. Is this a problem?


  2. #2
    VIP Member Array Bud White's Avatar
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    yep its a problem called jumping the crimp eventually it could tie up the gun wheelie or semiauto

    ya run into this uaully in a hard recoiling gun like the lighweight 357's ever wonder why they say no less than 120 grain ? or a 44 or even my 500 i have had a couple jump the crimp


    Just not enough crimp to hold it in place

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    Huh?

    What do you mean, got a little longer?

    Confused

    ret
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  4. #4
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    Bud...

    I've limited knowledge...but these wouldn't be factory ammo, would they?

    ret
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    VIP Member Array Bud White's Avatar
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    yeah blazer is a factory ammo cci he is saying the bullet is being pulled out from the case

    As i said above it can be a common problem in hard recoiling revolvers

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    Poor/inadequate crimp can lead to both set-back and ''pulling''.

    It depends on the recoil for ''pulling'', whereas set-back can occur if one round has too many impacts with a feed ramp. As the gun recoil rearwards and up - the bullet being heavy wants inertially to stay put briefly and so if crimp poor - the effect can be like an inertial bullet puller. ....... bullet gets slightly pulled fwd.... OAL lengthens.

    Usually slight, but OAL is fairly critical - not much needed to make a round go tight in a mag - and in a revo, enough could actually project on the last round before, to prevent cylinder revolving.

    A normally good taper crimp should hold most normal loads if adequate. A roll crimp more so as on rimmed cases but even roll crimps can struggle on hot loads.
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    I understand how the bullet could cause the wheel to lock up; the bullet would have to come out of the brass 3/8 to7/16 of an inch in a625 with 45acp. Other than that would there be a chamber pressure problem, too much or to little pressure?

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    VIP Member Array Bud White's Avatar
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    no the pressure will go down as it gets longer and more than likely it will still have enough pressure to make it down the barrel unless you were shooting a conversion of a 45 colt then the bullet coudl jump to far

  9. #9
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    Quote Originally Posted by Bud White View Post
    no the pressure will go down as it gets longer and more than likely it will still have enough pressure to make it down the barrel unless you were shooting a conversion of a 45 colt then the bullet coudl jump to far
    Thanks for all the help, I think I'll load 2 at a time 'till I shoot them up

  10. #10
    VIP Member Array Bud White's Avatar
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    not a problem

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    Thumbs up Amazing!!

    You guys continue to amaze me!! Someone here always, and I mean ALWAYS, has an appropriate answer to any question and is more than happy to share!

    Just another thank you to the great attitude of all on this forum!

    carry safe,

    ccWV
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    Hmm... I've been having problems with set-back in Blazer Brass. I wonder if they always have too light of a crimp.

  13. #13
    VIP Member Array Bud White's Avatar
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    Sounds like it one getting set back other is jumping crimp

    not enough crimp for sure

  14. #14
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    Quote Originally Posted by tj1231 View Post
    Hmm... I've been having problems with set-back in Blazer Brass. I wonder if they always have too light of a crimp.
    I've used them in a 1911 with no probs; but, with out a stoppage. I would not of known if it happened.

  15. #15
    VIP Member Array raevan's Avatar
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    Marlin puts a Disclaimer on their instructions with their Lever Action Rifles to not use Blazer ammo. It didn't say why but I assumed it was because of light crimp and set back problem. They also stated to not shoot aluminum cased ammo.

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