Just remember the mono's take up more powder space in an already small case within short magazine confines. Even if you can get enough powder in the case you've effectively reduced the size of the combustion chamber. You might be struggling to get 2950 fps with a 90 grain mono. in an accurate load. I have to drop the powder charge half a grain (really a grain would be better but accuracy is worse) when using the 6.8 110 TSX's as opposed to the same weight ProHunters. About 20-25 fps decrease in velocity
