I had to modify a Dawson DPO mount for a Vortex Viper to fit the Venom for my Staccato P SE. The Venom is convex on the ends vs. the flat Viper but a little judicious filing did the trick. So off to the indoor range to sight it in. Put 100 rds. of Norma 124 gr. through it in totally pedestrian fashion.... no gun hiccups and my Swiss Norma stash was made long before we started hearing reports of poor quality.