You guys that are using RL15 powder, any of you try it with 40gr Nosler BT's? I got both on hand and will be the first combo I try once my new 22-250 shows up.
no but factory book loads will run them at 4130 fps predicted.. and up that a grain, and it will run them 300 fps faster...
convert that over to a 35 NTX lead free and you are way over 4500 fps...