Anyone with internal ballistics program?

[JagerDog]

I was wondering about using 460 S&W brass in 45 Colt Circuit Judge and what performance could be increased wile sticking with standard 45 Colt pressures.

[JagerDog]

Shameless bump

[mark501w]

You know I read somewhere they were getting 2300fps with a 300gr projectile in the 460s&w! Kinda like a modern .45-70.

[JagerDog]

You know I read somewhere they were getting 2300fps with a 300gr projectile in the 460s&w! Kinda like a modern .45-70.

No doubt the 460 is a screamer. But my quest is using 460 brass at Colt pressures in a Circuit Judge (has 3" long cylinder, but not rated beyond Colt pressures). I have to believe that with the extra 1/2" of case and the right powder some considerable performance is available.

[mark501w]

Seems like the you would be closer to the forcing cone but you have to add more powder to make for the increased volume. I'd look at 45/70 loads.