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Old 12-08-2012, 09:20   #11
FullClip
CLM Number 171
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Join Date: May 2004
Location: On The Lake in The Maine Woods
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Quote:
Originally Posted by cosmose View Post
I was shooting the CCI quiet 22lr 40gr @ 710 fps
Check out page 10 of your owners manaul:

Through our testing, Smith & Wesson has also found that there
are several brands and types of .22LR ammunition that do not
perform consistently or reliably. Consequently, Smith & Wesson
DOES NOT RECOMMEND that the following brands or types of
.22LR ammunition be used in your M&P15-22 rifle:
Remington Golden Bullet Remington Thunderbolt
Remington Target 22 Winchester Wildcat
Any and all sub-sonic brands and types


They specifically tell you not to use sub-sonic ammo. bet they will fix it anyway, but if I were the warranty manager, things would be different.
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