Blr243 wrote:Boingk....I often hear about older 4570 where only certain loads are safe but is yours as strong as it can be ?
Happy to chat about it mate. PM me if you want, although I think In2anity is the go-to guy.
There's three levels of loads. Remember, this is a cartridge introduced in 1873 for the Springfield Trapdoor rifle - America's first metallic-cartridge military rifle. Those early rifles are good for about 28,000PSI on a good day, or the original load of 405gn at 1400fps or so.
The Marlin 1895 is good for 40,000PSI. And those loads are a mule. You probably won't want to fire the thing at those levels - thats about 3500ftlb. More than I'm happy using or feeling the recoil of.
The last level is Ruger No1 single shot or Simese Mauser. They are good for 50,000PSI, or about another 100fps from the same 400gn projectile.
There is plenty of documentation that the Marlin 11895 is good for 45,000PSI but I have no desire to test that. By the same token, there are plenty of pictures to attest to the fact that people have shown disregard for that limit.
Cheers - boingk