Originally Posted by
Muley Hunter
You don't think that BH 209 is all burning in heavy loads?
Even inefficient BP will still increase FPS when big loads are used. Even if half of it blows out the barrel.
BH is not effective as T7 when shooting light projectiles as BH is progressive burning so it is somewhat slow.
With T7 going from 110 to 120 grains I get a decent increase in velocity... going from 120-130 it is a very small jump, not even much worth the effort, so after 130 you are sending the rest out the barrel into the snow.... even at a 130 you shooting a % of that into the snow as unburnt powder...