Lefty7mmstw
Well-Known Member
if I were to take your question literally you would actually be asking how big of a hole in the end of the barrel do I need to make my pipsqueak little case make more energy... I run a 270, a 30-06 and a whelen... All burn around 55 grains of single base powder (IMR single base powder all has the same energy per grain content; the difference is in grain size and coating) I do prefer double base in the whelen (rl15) but it eats single base just fine too so the comparison holdsIf a person was to take two cartridges that have the same case capacity, but one is considered more efficient than the other. What are the pro's of the more efficient case?
my 270 (130 grain pill-3050 fps) develops 2686 ft# of muzzle energy
my 30-06 (165 grain pill-2850 fps) develops 2976 ft# of muzzle energy
my 35 Whelen (220 grain pill-2700 fps) develops 3562 ft# of muzzle energy
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