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New R Bros 7RM

 
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  #22  
Old 10-10-2013, 09:19 PM
Edd Edd is online now
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Re: New R Bros 7RM

Quote:
Originally Posted by TMR View Post
The barrel is not 5lbs FYI.
It was a guess. That barrel looks like a fluted standard Palma contour. A standard Palma cut down to 27 inches will weigh about 5 pounds. Flutes will remove about 6 ounces. Hanging a muzzle brake on it will add most of that back.
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  #23  
Old 10-15-2013, 07:17 PM
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Re: New R Bros 7RM

can i ask the details on your load? OAL?, jump or jam and by how much, etc.
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  #24  
Old 10-17-2013, 11:23 AM
TMR TMR is offline
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Re: New R Bros 7RM

Shawn,

We run the 180's just touching the lands. The throat design is a little different and would be way hot for a SAAMI chamber.
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  #25  
Old 10-17-2013, 12:13 PM
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Re: New R Bros 7RM

Right i remember talkin to you a while ago. Well nice rifle and thanks for the info.
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  #26  
Old 05-09-2014, 07:15 PM
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Re: New R Bros 7RM

Quote:
Originally Posted by Truc View Post
He might want to check his Chono, my 7 SAUM w/ 25" barrel gets 2750 with 58 gr H4831 w/ 180's and is on par with Bergers numbers in their loading manual.
This is the 4831 SC or (Shortcut) they are supposed to have different burn rates, but I don't know exactly how much of a difference it will make.
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  #27  
Old 05-10-2014, 05:02 AM
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Re: New R Bros 7RM

Yes i was wrong, I recently retested mine again with a Magneto Speed chrony and mine is getting 2920fps with 25" barrel. The first time I shot over a Pact chrony I saw 2758 fps and it was close to Bergers load manual I never questioned it. I kind of thought something wasn't right when my drops didn't match actual shooting.
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