New S&W M&P 22 Magnum Ammo & Reliability Testing
The S&W M&P 22 Magnum requires a break-in period and is highly sensitive to ammunition type and shooter grip. Initial reliability issues were linked to brass shavings and a need for a firm grip to overcome the light slide mass. Hornady 30gr V-MAX proved most reliable, while other ammo types and improper grip led to malfunctions.









