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Handcrafted Canyon Jumper

Discussion in 'Ammo & Reloading' started by Cowbaby, Mar 12, 2021.

  1. Jcann

    Jcann Sharpshooter

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  2. Forgalspop

    Forgalspop Sharpshooter

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    Thanks for the info. I went to the Peterson cartridge website and like most reloading supplies, they were out of stock in the .243 chamber cartridges. I will keep checking from time to time.
     
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  3. DRC458

    DRC458 Sharpshooter

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    I shoot that same bullet in my .300 Win Mag, but I've never tried that powder. I haven't shot it in ages and don't remember the load I settled on, but I know I was not getting that kind of velocity! Good luck. Let us know!
     
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  4. Cowbaby

    Cowbaby Sharpshooter

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    Well if velocity is all your after throw some RL22 in that 300 or the newer RL23 which I have not tried but is suppossed to be more temp stable version. I could quote you how much but that might get both of us in trouble and you would need to work up to it.

    But I will say this it will get you there easy.
     
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  5. DRC458

    DRC458 Sharpshooter

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    I will sacrifice some velocity for accuracy. They don't have to be screaming fast to get the job done. I do, however, seek the highest velocity I can get and still maintain acceptable accuracy.

    .
     
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  6. Forgalspop

    Forgalspop Sharpshooter

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    I went to this website and they sell .243 brass either made for small rifle primers or ones for large rifle primers. I have been searching the web to find out what, if any advantage there would be to have a .243 cartridge with a small rifle primer vs the typical large rifle primer. I have not found any info on the subject. I have a fair amount of both small and large rifle primers. If their is an advantage to using the small vs. the large? I would be tempted to try them. Anyone have the answer for the need of a .243 cartridge made for small rifle primer??
     
  7. Jcann

    Jcann Sharpshooter

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    I have heard but I don’t have any first hand experience that SRP brass may produce smaller Extreme Spread/Standard Deviation (ES/SD) and primer pockets hold up better to higher pressure. Some have had issues with pierced primers using SRP brass and bush their firing pin hole and turn their pin.
     
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  8. swampratt

    swampratt Sharpshooter

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    CCI 400 will pierce before a CCI 550 will in a .223 and A 450 cci will take much more than the 550.
    I do not know what primers are piercing in the .243 but I do know someone that wanted to build a 1:7 twist
    to shoot 105+ gr bullets from his .243.
    I think pressures can get high with something like that.
     
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  9. Jcann

    Jcann Sharpshooter

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    I think those who are piercing primers are pushing the higher pressure limits in the 6mm/6.5mm calibers. Gre-Tan Rifles has a short write up on bushing the firing pin here: https://www.gretanrifles.com/single-post/2017/07/24/bush-firing-pin-hole-turn-pin-8000 and it makes sense to me.
     
  10. Forgalspop

    Forgalspop Sharpshooter

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