[Bigcountry02]

Originally Posted by vjf915

Well at about $20 for a pack, it couldnt hurt to try right? I guess I will give both Federal and Winchester a shot.

On page 9 and 10 of the manual, indicates for optimal performanace in your M&P15-22 rifle:

CCI Standard Velocity
CCI Mini-Mag
CCI Stinger (Good luck on finding)
Aguila Super Extra High Velocity
Federal American Eagle
Federal Gameshock
Winchester Super-X High Velocity
Aguila Super Extra Standard Velocity


Does not recommend, based on ammunition that do not perform consistently or reliably:

Remington Golden Bullet
Remington Target 22
Remington Thunderbolt
Winchester Wildcat
Any and all sub-sonic brands and types

[38super]

This is what I use in my M&P15-22.

Try the American Eagle High Velocity 40gr. lead round nose ($20.00 brick). Or the new CCI tactical 40gr. lead round nose (only presently available at Cabelas & a little pricey) this one is recommended by S&W in the M&P15-22 for competition.

Used 36, 38, or 40gr. round nose lead ammo. Don't use hollowpoints or CCI mini-mags, they have a tendency to mash a little when feeding because of the hollow. Stick with American Eagle or CCI and you won't have problems in you M&P.

[rodent.22]

I own the Colt M4 OPS, it eats them all a brick at a time, EXCEPT any Remington. I also have the 15/22 Pistol, it fires ANYTHING except Remington. I am surprised your Smith doesn't run flawlessly on Federal 550 bulk.