Wow, I've read some things here that go against my grain....so to speak.....what kind of a rifle and caliber are we talking about here?? Little caliber, big caliber, hot hunting loads max recommended loads?? Help me out here, because if you are loading 300 Win Mags at max loads and running them close to the lands, you are hurting your rifle, hurting your accuracy and possibly hurting potentially...yourself. Just ask Roy Weatherby. Now if we are talking about a 223 Remington, then knock yourself out. Most big game rifles like a little jump.....20 to 50 thousandths for lower chamber pressure and optimum accuracy at max loads. My 220 Swift likes them 5 thousandths off....My Sako 30'06 needs 50 thousandths. Once you see a flat primer, better back off or seat a bit deeper. I've been doing this since 1962 and have a bit of experience here. You might also want to use a chroney to see the difference in speed. Hot hunting load......back um off....soft tatget load....whatever tunes your ukelele. Regards, Rick.