Rimfire- Autoloader chamber design

obx22

Troubleshooter
Full Member
Minuteman
Dec 28, 2020
773
686
N.C.
When building a .22 NRL/PRS/MARS type autoloader, is there one chamber design that rises to the top for accuracy, reliability, and getting through a 100-150 round event without cleaning and reseasoning the bore or removing carbon rings?