w44wcf, Thank's for posting this information. Fired caes from my chamber show that the 1892 Marlin chamber must be very close to spec.I like to size the cases down at the neck only enough to hold the bullet heel tight, when need. The last few group's of test load's for the .32 LC. have not been sized down at all, (note have been using the reformed .32 S&W LONG case, whith the .012 thick wall). When reloading a as fired case,I can hand start a 299153 bullet heel into the case mouth enough to hold the bullet while it is started into the Ideal tong tool. When all of the heel is seated the case recieves a light crimp,from the Ideal tong tool. I have found this simple tool to be just the best for me in assembling ammo for the .32 LC. The bullet's are seated very straight ,and have a firm grip on the bullet heel and case fit. Accuracy has been very good also.And case blow-by has been to a minimum,even with the light load's. One more reason I do not like to size down more than need . ndnchf" I have sized the thick wall converted case's down to a .295 ID. at case neck and loaded 299153 bullet's with a heel of about .299,Had to use an expander tool on the beginning of the case mouth ,but the bullet's seated ok and shot very good groups.I assume that the tight squeeze did not deform the bullet heel.At least it did not show on the target. .316 for the final sizer. Will send one @.321 also as a primary sizer . Think with good lube and a clean-up around the base after final sizieng ,these dies should make good case's. Should have these in the mail by the end of this wk. ,,,,,,Dusty