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Sweet Shooter · November 9, 2012, 05:05 PM

I just went to the range and my SIG M400 once again turned in some impressive groups—an inch at the largest but actually that one included two turret clicks to the right. I was not expecting tight groups as it was snowing heavily and I'm using up some 40 gr V-max (in a 1x7 !!!). Has anyone noticed an effect in the snow on group size? What are the physics I wonder of a bullet traveling 100 yards at ~3400fps through falling snow.

Also since I had the rifle apart the other day to do a deep clean the groups had moved to the left by about half an inch (hence those two click mentioned above)... is that to be expected? If so, we could never know where a deep cleaned rifle is going to hit. Thoughts?

-SS-

November 9, 2012, 05:05 PM	#1
Sweet Shooter Senior Member Join Date: June 17, 2011 Posts: 672	Shooting in the snow... I just went to the range and my SIG M400 once again turned in some impressive groups—an inch at the largest but actually that one included two turret clicks to the right. I was not expecting tight groups as it was snowing heavily and I'm using up some 40 gr V-max (in a 1x7 !!!). Has anyone noticed an effect in the snow on group size? What are the physics I wonder of a bullet traveling 100 yards at ~3400fps through falling snow. Also since I had the rifle apart the other day to do a deep clean the groups had moved to the left by about half an inch (hence those two click mentioned above)... is that to be expected? If so, we could never know where a deep cleaned rifle is going to hit. Thoughts? -SS-