I shoot heavies through mine (though, admittedly, it doesn't get shot all that much). I've come to like 175's at 2500 out of my #1. Currently pushing them with RL-22.

I really like the Hornady 175 RN, but they quit making them. I'm shooting through a batch of 175 GameKings that shoot OK for what that rifle will be used for, but when I run through them and run out of Hornady Blue Noses, I'll probably switch to 175 Interlocks.

I guess my thinking behind the heavies is that I've already got a .25-06 shooting 100's or 120's. 140's out a 7x57 seem a bit redundant to me (but no less effective for anyone else).