Conestoga Smith, SASS #18219

I'm guessing a round nose lead bullet, no crimp groove. I've dealt with those by seating those a bit deeper, where the exposed nose STARTS to taper to smaller diameter, and put on a gentle roll crimp that just meets the lead. Taper might also work if done in this fashion. I had taken to minimizing the uneven brass lengths by using all one headstamp with REALLY improved things a great deal- had a 5 gallon bucket of WW cases that saved me much trouble - very consistent lengths and case thickness.