chiltech500 wrote:I must be missing something. When I crimp the round the only unchanged portion is the shoulder - does that mean the slight variation between one mfgs' .452 and another matter?
Would measuring the inside diameter of my barrel and a bullet tell me if they are compatible?
A lot of things might matter a little, and many of them can be adjusted with the right powder, OAL and crimp.
Bullet hardness matters, and some barrels will lead badly with certain bullets.
Slugging the barrel is one of the best ways to know for sure, but there are other things that cause leading or inaccuracy other than improperly sized bullets.
The reason a lot of people suggest the Oregon Trail Lasercast is because they are high quality bullets with good bases.
I have had very good luck with these below and recommend them unconditionally.
http://www.rozedist.com/mm5/merchant.mv ... =ZSB-45ACP
Once you have a good reliable load with a quality bullet, you need to stop nit picking the accuracy, and move on to developing your triggering skills.
Bullseye is not benchrest, it is a different game, and is much easier to get acceptable accuracy.