[Jim Hauff]

Do some detailed research on the development of the U.S. Rifle .30 M1 (GARAND) - the U.S. Gov't spend over 10 years and a couple million bucks developing and timing the system to work - your answers should lie within that body of knowledge. Specially blended powders, mass of reciprocating systems, mass of ejecta, strength of recoil spring, bolt lock time, momentum all come into play. Way beyond my limited brain power.