LaneNebraska
The problem there is that BH-209 really does not do much better than T7-3f when loaded with comparable amounts of powder -
when shooting light bullets.... where BH-209 really lights up is when shooting the heavier bullets which really aids the progessive burnof the powder. Those 200's will just get out the barrel before the pwder really has a chance to do it's thing... Now if they would make the powder with different burning rates as center fire powder is you could select the rate of burn you need to match the weight of the bullet you are pushing...