M*CARBO Brotherhood

Ruger GP100 with MCARBO trigger spring kit fitted

Hi, I installed the trigger spring kit and the trigger is great, smooth and light. However when I use Fiocci small pistol primers in my reloads I get about a 30 percent failure to fire. Is it because the primers are too hard or is the spring too light? seems fine with factory ammo.

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Most likely it’s due to the primer sitting deeper in your reloads than it is in factory ammo. Could try “softer“ primers as well.

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Further to my post, i have started using Federal primers and find they are very reliable, no hang fires at all.I was using Fiocci primers which are obviously too hard.

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My brother, gone in 2009, always said the GP stood for GOD’S POSTPONED