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Old November 30, 2011, 08:35 AM   #45
billnourse
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Join Date: September 16, 2010
Location: Bloomfield, NM
Posts: 366
BruceM,

Hunting in Tundra does not have a lot to do with temperture sensitivity. I'm sure your rifle shoots good in cold wheather, but how much change to you get when you go from -15 to +100.

I have seen as much as 150fps difference with I4350 when extreme differences in temp. are experienced.

I called Hodgson Powder Company, the maker of both H and IMR, and it was confirmed that the IMR is more temperture sensitive than H, or any of their Extreme Powders.

Bill
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Cooper 52 25/06, Cooper 52 30/06, Cooper 52 338/06Cooper 57 .17HMR, Remington VS .22/250 all left handed. Rock River Predator Persuit AR-15, 1952 Marlin 336 in 30/30. 2 Kimber 1911, Colt 1911, S&W .357 Mag, Kahr .40 and .380
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