To make the 360 but hammer "Remington took 30-30 and made straight wall for a 35 cal bullet (.358")". Now where have I heard of a straight wall 30-30? .38-55 Winchester - Wikipedia And 38-55 turnt up to 55,000psi with a modern 375 cal bullet. .375 Winchester - Wikipedia 35cal sux, 375 is where bullets start to get interesting, like heavy steel jacket copper clad bullets and such.
