Discussion Starter · #1 ·
I am restoring a 1st Generation Colt SAA, 1875 patent, SN 107XXX. I attempted to "function testfire" using new brass primed with Rem LP primers only; no bullet or powder. On firing, the primers back out of the primer pocket, impinge against the face of the frame and thereby prevent the cylinder from freely indexing to the next position. Can anyone provide guidance on what is causing this problem?