What kind of loads is Quicktodo using. Any factory ammo or is he
downloaded to less than max in the reload charts ?
quickdtoo said:The 460S&W has the same size case head as the 45 Colt and 454 Casull at approx .478-.480" depending on who's diagram you use, SAAMI MAP for both the 460 and 454 is 65kpsi, the 460S&W works fine on a modern SB2 frame, [glow=red,2,300]I get nearly 2900fps with the 200gr Hornady factory load in my 20" H&R, accuracy is 2½-3" at 100yds.[/glow] The rim size of .512" has nothing to do with case head thrust(bolt thrust), it's calculated using the internal case head surface area and the pressure.
Bolt thrust is easy to calculate. Only two inputs are required. They are peak chamber pressure in PSI and as mentioned, the inside area of the case head that the gas pressure can work on. The formula then is: