Small Pistol Primers vs Large Pistol Primers in 10mm – Is There any Difference? Trying these in my Smith & Wesson M&P 2.0 10mm. Jesse B OutdoorsGuns, Gear, Knives, and Outdoors. These are some of my favorite things besides my family.

Small Pistol Primers vs Large Pistol Primers in 45ACP – Is There Any Difference? Trying these in my Smith & Wesson M&P 2.0 full size. Jesse B OutdoorsGuns, Gear, Knives, and Outdoors. These are some of my favorite things besides my family.