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7mm RM and loads using 175 SMKs

 
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  #8  
Old 03-25-2005, 10:13 AM
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Join Date: Mar 2005
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Re: 7mm RM and loads using 175 SMKs

I don't have a 7 RUM nor have I shot 175 SMK's in 7mm, but when I was experimenting with different powders, including R22, for my 7mm S&H, I ultimately ended up with H4831SC (64 grains coincidently) below 180 Bergers. The combination shoots very well. If you are not having luck with the other powders, give H4831 a try.
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  #9  
Old 03-27-2005, 07:17 AM
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Join Date: May 2001
Location: Urich, MO
Posts: 838
Re: 7mm RM and loads using 175 SMKs

Craig,
I wasn't thinking the other day when you asked about this and the box saying 1-8 was needed- well, 1-8 is needed for a 7-08, the faster you push a bullet (to a degree) the slower twist you can get away with. Your 7 RM will do just fine.
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Chris Matthews
www.longshotriflesllc.com
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  #10  
Old 03-27-2005, 08:22 PM
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Join Date: Dec 2004
Location: Connellsville, PA
Posts: 128
Re: 7mm RM and loads using 175 SMKs

No problem Chris. I trust your judgement. Hell, if the box said requires 1-3 twist and you said this rifle would stabilize it, I'd probably believe you [img]/ubbthreads/images/graemlins/smile.gif[/img]. I already loaded up some 140 Gamekings just to break in the barrel. Had them laying around from my dad's 7mm, plus no reason to shoot expensive bullets until the rifle is ready for load development.
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  #11  
Old 03-28-2005, 08:23 PM
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Join Date: Nov 2001
Location: Santa Fe, NM
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Re: 7mm RM and loads using 175 SMKs

My light 1000 yard BR gun is a 7mm Rem with a Hart 28.5 barrel. I shoot 176gr GTB bullets with 65.5gr VV-170. I use RWS brass and Rws Mag primers. Twist 1/9 and I need 2950fps to make this combo work. I put a new Schneider barrel on it and rechambered in a 7mm Rem mag IMP. With 68.8gr of Retumbo the Sierra 175grMK worked well velocity is about 3120fps. Using RWS brass, Fed 215M primers. I found that treating the barrel and bullets with Fastex increases the velocity by about 100FPS.
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