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Thread: speed limit for 22lr jacket bullets?

  1. #1
    Boolit Master

    rockrat's Avatar
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    speed limit for 22lr jacket bullets?

    Picked up some bullets someone swaged from 22lr cases at my LGS. Wondering if they have a fps limit for my 1-12" twist 223 barrel?

  2. #2
    Boolit Master

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    Interesting question. I'd sure be curious to work 'em up and find out.

    With that slow of a twist, they should handle 3,000 or so without flying apart.
    Which is about where ya want to be anyway.
    Last edited by Winger Ed.; 09-11-2019 at 01:29 AM.
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  3. #3
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    Many factors......

    A lot will depend on how well the person did at making the bullets.

    Next.... quality of barrel.

    Twist rate of barrel... rather obvious, faster twist equals greater chance of blowing up bullets before the target.

    Last.... and this is just what I believe.... burn rate for the powder used. I believe a slower burning powder might be less likely to tear up a bullet then a faster powder, even at same fps.

    When everything is good with above factors bullets made from 22lr brass are as capable as factory bullets for fps and accuracy.

    It may be a bit of old info that suggested a max fps.... I don't believe there is a max any more then traditional bullets but I do believe it is possible the bullets made from brass may get better "accuracy" at a slower fps then max and there for it was the recommendation based on accuracy to shoot slower not that there was a "limit".

    I can produce pics of groups under 1/4 moa at 3450 fps with 53 grain bullets made from brass from a 223rem.... but when I shoot high volume varmint shooting I prefer around 3100 simply to keep the barrel cooler.

    Start load development same as you would factory bullets. If the bullets are any good you should have
    no problem finding an accurate load. I have found one grain of powder can make the difference between 2" groups and 1/2" groups with our brass bullets.

    Have fun, good shooting!

    BT
    Last edited by BT Sniper; 09-11-2019 at 04:04 AM.
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  4. #4
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    P.s. I shoot 12 twists for my 22 cal bullets, does very well!
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  5. #5
    Boolit Buddy
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    I've taken my 22LR jacketed 40 grain bullets past 4100 fps with my 1-12 twist 22-250. Rpms kill bullets, not speed. If the quality of your bullets is good, I rather doubt you could push 'em fast enough to spin 'em apart with a 1-12 223. 320k rpms is my upper limit. I bought my 22-250 just to break the 4000 fps barrier. Accuracy at that speed was poor. I found the best accuracy for me with the 40s was at about 3850 fps. 5 for 5, both tests. These were not bonded bullets.

    Last edited by supe47; 09-11-2019 at 01:43 PM.

  6. #6
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    Here was the group I was talking about...



    52 grain bullet
    CBI 12 twist 223rem
    27.0 grains of H-335 (max load work up yours)
    FPS easily approaching 3500fps

    Formed these in a set of my dies before sending to customer.

    That is 4 out of 5 inside the hole punch of a standard three ring sheet of paper!

    Swage on!

    BT
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    Good shooting and swage on!

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  7. #7
    Boolit Buddy M.A.D's Avatar
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    I can confirm 58 grains in a 1-9 is safe @ 3100 fps using Winchester T22 brass ( I use T22 in my Target pistols )

  8. #8
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    I would think there is a "speed Limit"? ...of course I could be wrong.

    I do have a story, some years ago, I was gifted some Home-swaged 243 (22LR jackets) rifle bullets. I loaded them to a pet load of mine for commercial jacketed bullets, and I got massive brass fouling. I never really looked into exactly what could have happened, I assumed I just pushed them too hard.

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  9. #9
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    I think at higher fps there could be a bit more brass fouling. I've noticed this a bit too in all calibers when FPS is above 3100 or so.

    One additional factor that may have a part in our brass bullets holding together..... over annealing making the jacket too soft. Not sure but I have some 80 grain 6mm bullets I made with 17HMR brass cut down that I annealed too much. They where easily blown up in a 243AI 8 twist.

    BT
    When you stop learning you are dying.

    Check out my vendor page for available products and prices!
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    Good shooting and swage on!

    Brian

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