I'm about to order a .243AI reamer. I intend to shoot 105-107 grain bullets, and I'd like to be able to seat them touching or slightly jammed if needed. With a 105 gr. bullet seated to a OAL of 2.820 (just a bit shorter than my mag box allows), there is about .180" from the case mouth to the place on the bullet measures .237. Should i specify a .180" throat or should I make it a bit shorter? If I get it wrong (too long) I may run out of magbox room. What are your opinions on throat angle? 1.5 degrees? does it really matter? All opinions appreciated, Thanks.