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168 gn SMK 300WM Powder

 
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  #1  
Old 04-05-2007, 02:32 PM
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168 gn SMK 300WM Powder

I am looking for proven powder for launching 168gn SMK at approx 3200-3300fps from a .300 WM. I am chasing a load for a friends Sendero. Mine loves H1000, his is a bit more finicky. I am hoping the masterminds around here may provide some insight. I am not necessarily looking for a pet load, just powder recommendations, however I wont turn down any data if someone is willing to share. His is a Sendero II fluted. We have found very accurate combinations at velocities below 3,000fps and have tinkered with a variety of seating depths but have not been able to do better that .9 MOA. Any help will be greatly appreciated.
~z
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Old 04-06-2007, 08:00 AM
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Re: 168 gn SMK 300WM Powder

IMR-7828
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Old 04-06-2007, 08:52 AM
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Re: 168 gn SMK 300WM Powder

seems with the lighter bullets, 165/168 the Reloader 19 and IMR 4350 works good in the 300 win mag. The 180/200 seem to prefer Reloader 22 or IMR 4831/H4831.
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Old 04-06-2007, 09:15 AM
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Re: 168 gn SMK 300WM Powder

I am using H-4350 with 190SMKs and there is still some airspace - it would be a very good pick fore the 168's.

Max for H-4350 would be around 74gr at 3300 fps.

77gr of H-4831 would also get you 3300 fps.

The "H" powders burn very clean and have good temperature stability.
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  #5  
Old 04-06-2007, 11:42 AM
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Re: 168 gn SMK 300WM Powder

I'd certainly give RL22 a try. Works great for me with 165 gr. Ballistic Tips.
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