rd, first I'll say that you guys with a Handi have the advantage of an open breech, mine is a small Martini and I have to contend with the curvature of the breech block. I discovered that certain bullet profiles required me to seat to the crimp groove in order to clear the block. At 28gr AA1680 this resulted in a compression of 5/32" measured. Other profiles allow me to seat much further out giving very little to no compression. The compressed loads did not give any indications of pressure problems, but I have a hang-up about compressed loads so the bullets that need deeper seating are religated to use with 4227, 2400, etc. that need less case room. In the Handi you should wind up with little to no compression of powder and the case will probably fill just about to the base of the bullet. Hope this helps. Goatwhiskers