I have realized the 75 bthp can not take a hard kick in the rump and stay accurate. In none of our guns.
But if max MV doesn't matter to you accurately, I ran the 75s a bit slower, I don't recall how much, but likely 75 or 100 fps slower than I could have, and they were ok.
69s always shot better than 68s in my guns also.
77s could be really good or not depending on the barrels.
73 bergers were just super accuarte out of every tube but they may not be what you want or need.
