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300 wm/retumbo/208 amax--anybody?

 
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  #8  
Old 05-19-2008, 03:13 AM
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Join Date: Apr 2005
Location: Alaska
Posts: 3,512
300 WM, 210 Berger, Retumbo

I just loaded and fired some Retumbo today in my 25.5" Lilja barreled 300 WM.
These three loads were a followup to a ladder test I shot last weekend.

Lapua brass;
CCI 250 primers;
Bullets seated 0.007" into the lands;
Chronographs 10-15 feet from muzzle;

79.0 gr Retumbo - 4 shots averaged 2899 fps
ES=13
SD=7
4 shots - 1 3/8" @300 yd

79.5 gr Retumbo - 3 shots averaged 2936 fps
ES=31
SD=16
3 shots - 1 1/8" @300 yd

80.0 gr Retumbo - 3 shots averaged 2950 fps
ES=35
SD=18
3 shots - 1 5/8" @300 yd

Other than the ladder test and these groups, I've never used Retumbo in the 300 WM before. I'm going to try 79.2 or 79.3 gr and shoot at 600 yds next time out. Retumbo is providing me about 75 fps more peak MV than H1000. But I think H1000 may shoot a little better with this Berger 210 in my rifle... Still a work in progress.
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  #9  
Old 05-23-2008, 12:54 AM
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Join Date: Mar 2008
Location: western oregon
Posts: 40
retumbo and AMAX

300 WM,80.2 gr retumbo, 208 amax.CCI 250,3.630col,rws brass in my 24 inch barreled factory savage is close to max in my rifle.I went a little beyond that today and had sticky extraction.80.4 gr grouped around 1.6 at 200 yards.I,m sure the that this rifle and load is capable of better.Maybe my next session will be better.GRPB
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