Hi everyone,

In the loading data for the .500 A2 found in the reloading pages of this site, I see charges of IMR 4350 for a 600 gr Woodleigh listed up to 136 gr in weight. I've seen a 124 gr load listed elsewhere for supposedly 2400 fps, supposedly at an estimated 50,000 psi; as I recall from the A2 loading manual something like 63,800 PSI is max operating pressure (taken from memory; don't trust this number).

I've also read that you can't stuff enough IMR 4350 into the A2 case for you to run into problems with a 600 gr Woodleigh. Can anyone shed some light on the subject of what pressure can be expected at these various load levels?

post this in big bores .. rob, dave, rip, or rich will answer you

I spent last weekend shooting 647 grain milsurps with 100 grains of IMR4895 for 2230 average with little deviation. I was surprised to get that much speed with that load. I'm interested in 4320 & 4350 loads for milsurps if anyone has the data.

This is now cross posted into the Big Bores forum.

Thanks for the suggestion.