I've got the S&W M&P -15 in .300 Whisper. Got it about a year ago.
Absolutely Love mine, & it shoots 1" 5-shot groups @ 100 yards even with the cheap Remington Factory Ammo. I've killed several feral hogs at the ranch with it. Most of my shots have been under 100 yards & puts them down immediately.
Haven't shot a deer with it yet, but I'm still waiting on my suppressor also. It's legal now in TX to shoot any game animal or Varmit while using a suppressor.
The Subsonic Ammo shoots about 6" high in my rifle when sighted in with the 115gr ammo. So far, mine has fed every kind of ammo I've tried without a hitch.
Hope you enjoy your new S&W .300 Whisper.
Last edited by chlinstructor; 05/19/13.
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