Excellent availability of ammunition/reloads for the price. I am breaking in a 10mm semi-auto S&W Core M&P 2.0 and had a lot of issues surrounding the reliability and functionality of the weapon as far as a backcountry/bug-out weapon. I fire both 10 mm ammunitions as well as .40 cal ammunition in my 10 mm most because it's cheaper. I had to upgrade the striker pin and recoil rod to optimize reliability to include ammunition. 100-150 solved all issues and magazines.