I agree with teddy12B. Ft Scott ammo I used 1 day almost seemed to be hitting the target sideways. Was leaving large oval shaped hits on target. I have not really had any more feed issues since I replaced the guide rod spring with a Galloway 22lb spring and rod & I also replaced my mag...
New guide rod and springs are now available for the 4.6 model from Galloway https://gallowayprecision.com/smith-and-wesson/m-and-p/assembled-stainless-steel-guide-rods-for-smith-and-wesson-m-and-p-10mm-m2-pistols
Here it is. New Springer Precision SP0168 next to the factory mag springs. You can tell 2 of the factory springs are already shorter than a 3rd new factory spring I had after only 2 range trips.
Took my 4.6 back out yesterday and ran 100 rds through it with factory spring. Zero issues. Maybe it needed a longer break in period. Also shot some TUI rounds through it. Seemed like really hot stuff and threw a massive fireball.
Galloway is producing a guide rod and heavier spring for us 4.6” 10mm folks. Prodcution started this week and it should be for sales in the next couple of weeks.
their note on the website:
Administrator
Jul 5, 2022, 10:20
Thank you. The 10mm 4.6 Guide rod is starting its run today, we should...
I'm going to give it another go soon at the range. If it continues to happen more than once every 100 rounds I calling S&W for a repair. I'm almost thinking it is the mag rather than the gun.
I bought the 4.6" model a week ago. 1st time out I had 4 failures to feed in 120rds. All 4 times the round came up and hit the very top of the ramp and lodged the action open. Had to slap the bottom of the gun to fix the issue. I was using 3 different types of ammo and it happened to all 3...