+1 on the bullet shape and OAL. I do not think it makes much difference in the actual seating of the bullet, unless you are using soft lead bullets or soft tipped jacketed bullets. I had some Remington semi jacked bullets and the seater left a distinct ring around the bullet. Not just a slight depression, it was deep. I ended up making a new seater for my die. I used a 1/4-28 bolt and cut the head off and rounded and shaped the end that the head was on to fit the hole in the top of the bullet. It worked real well. It was an older RCBS 44 Mag die that had a 1/4-28 threaded seater stem. I think you can send bullets into most die makers and have a custom seater made for a nominal fee. I have heard, but not tried, that you can make custom seaters out of epoxy. You coat a bullet with release agent and fill the cavity up in the seater (after you remove it from the die) and push the bullet into it, wiping away any excess material. Let it set and the remove the bullet. Voila you have a custom seater that perfectly fits your bullet. I think most trouble is with cast bullets and or pistol type bullets, because the bullet nose can vary so much. I have not had any issues with jacketed bullets in bottle necked cases, other than having to adjust seating depth. Good Luck and Good Shooting
