When I seat my bullets I get a ďringĒ or an impression around the nose of the bullet. The bullet seats to accurate depths and with very little effort exerted on the handle of my press. I am using a Rock Chucker single-stage with RCBS .40S&W carbide die set. Per the RCBS die instructions I am not crimping. My seating depth is 1.120Ē with a tolerance of +/- 0.0005Ē Ö darn-near perfect. Iím new to reloading, but let me say that I have thoroughly read the Speer and Hornady reloading manuals (cover-to-cover) as well as the die set instructions. The RCBS website features this very problem in its FAQ section and recommends that the user purchase a custom-order die from its Special Order Catalog and send in your bullet to RCBS for a match.
Bullet: Speer 165 gr. TMJ FN (This is a FMJ flat-nosed projectile)
Brass: Win, Federal, PMC, Blazer, etc.
Do you think itís likely that such a common die (RCBS .40S&W carbide) would have problems with such a common bullet? Itís not like Iím trying to reload a custom-cast lead projectile. Is it common for seater dies to leave impressions on bullets? Iíve also tried loading 165 gr. frangibles, which have a more rounded nose, but get similar impressions left by the ďcupĒ of the seater plug. Is there a better die out there? Iím about to give up on this RCBS seater die and try a Lee substitute. I donít see how I could be adjusting the seater die incorrectly if Iím getting such precise seating depths. Again, I am not crimping. Any other ideas???
Thanks for looking,