Improves cartridge feeding

Posted by Jeffrey on Mar 19th 2025

When I added a Ramjet/Afterburner ported barrel with compensator to my Sig P365 X-Macro I began to experience failures to feed with the bullet nose dipped, pointing into the feed ramp. This was likely due to reduced recoil impulse resulting in incomplete travel of the recoiling slide to its rearmost position prior to starting forward. Therefore, shortening the cycle time and giving the magazine spring less time to raise the next round fully, causing the lower lip of the slide to catch the very top edge of the case and pushing the nose down. These +10% magazine springs cured that problem. I wish I could find +10% power magazine springs for my Sig P365 21-round mags, as the OEM springs reliably produce several FTF stoppages when used with the RJ/AB compensated gun (but not with Sig's less-effective slide compensators).