Lance - You didn't say what kind of die set you have. If it is the standard RCBS, Lyman, Hornady, etc. I would suggest you purchase a Lee Factory Crimp (LFC) die, it will solve your problem because you won't have to worry about the "crimping groove". I've loaded alot of .357 bullets in the .35 Rem (as well as other .35's) and found bullets of 140gr and over seem to work the best. The problem with using the standard "crimper" on the seating die is that unless you trim every case the same length you have a chance of "bulging" the neck (too long) or not getting enough crimp (too short). Plus, if you seat the bullet beyond the crimping grove the standard crimping/seating die cannot crimp the case neck to the bullet; it needs the "groove" where the Lee does not. Unless you are loading near max, pushing the bullets into the case will not cause a tremendous increase in pressure, as a pistol case might with its limited powder space, but it sure won't help accuracy. I'd also feed every round you load through the magazine until you get it right before you go to the range. .357 bullets in any of the .35's are great fun to shoot and inexpensive! Good luck. Jager