I have received good results with 2015 in the following cartridges. The 17 fireball 20 gr Horn. excellent accuracy and about the highest velocity of any powder tried in that cartridge.
20 VarTarg 32 Sierra good vel. and accuracy but Re7 beat it out by a little in accuracy.
22 PPC with 50 Nos.BT best accuracy of anything I tried in this cartridge.
223 40 Nos. great accuracy but never gave the velocity the book showed. But was fast enough for me.
45-70 300 jacketed and 350 cast top velocity and good accuracy.
221 Fireball gave good accuracy with 50 and 55 gr. bullets but vel was pretty low. Tried once with 40 gr vel. low to slow burn for this cartridge in my opinion.
Only shot it extensively in the PPC and a moderate amount in the 223 and 17FB. Have not tried it in the bigger 20 and 22 cartridges.
