You could always go to harbor freight and invest in an inexpensive caliper and then go to your favorite gun store and measure the different OAL's of various factory fodder. Traditional cup and core bullets are shorter than the mono-metals and plastic tipped bullets. I've had excellent luck with Sierras in the traditional cup and core. I think you will find that "kissing the lands" is going to be the least of your worries in regards to accuracy out of a factory chamber at 100 yards. If you don't even get better than two inch groups, that will kill deer at 100 yds. Best measure is where the first shot out of a cold barrel will impact. Chances are you'll not get more than one shot off on game.
