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rough barrel?

Old 02-02-2007, 10:39 AM
  #1  
Fork Horn
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Join Date: Jan 2007
Location: Idaho's Elk Country
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Default rough barrel?

I just got a new 7mm Rem mag(M70026" bbl)and started working up loads for it. I worked up to 67.5grs of R-22 overa Nosler Accubond that makes about 3180fps in my other 26" M700. I took the new one to the range and it chrono'd an avg of only 3060 w/ this load. The barrel also seems to be a bit rough when I run patches through it. I've heard rough barrelscan speed up after they are shot a bit and smoothed out. Any experience with this or should I just work up a different load. Thanks for your input, Brett
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Old 02-02-2007, 12:44 PM
  #2  
bigcountry
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Default RE: rough barrel?

ORIGINAL: hunter5325

I just got a new 7mm Rem mag(M70026" bbl)and started working up loads for it. I worked up to 67.5grs of R-22 overa Nosler Accubond that makes about 3180fps in my other 26" M700. I took the new one to the range and it chrono'd an avg of only 3060 w/ this load. The barrel also seems to be a bit rough when I run patches through it. I've heard rough barrelscan speed up after they are shot a bit and smoothed out. Any experience with this or should I just work up a different load. Thanks for your input, Brett
Thats the exact velocity mossy on here gets with that load. (3050fps that is).
 
Old 02-02-2007, 03:57 PM
  #3  
Nontypical Buck
 
Join Date: Feb 2003
Location: Olive Branch MS USA
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Default RE: rough barrel?

I'd be more interested in accuracy than 120 fps. If she shoots good, you got a winner.
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Old 02-02-2007, 04:57 PM
  #4  
Fork Horn
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Location: Idaho's Elk Country
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Default RE: rough barrel?

Yeah, it shoots good, but I don't see it as a winner. I get 3125fps out of my 24" M70 in 30-06 w/ 54grs of IMR4064 and 150 gr Interbonds. I use 13.5 more grains of powder to get 65fps less w/ a longer barrel and lighter bullet.
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Old 02-02-2007, 07:52 PM
  #5  
Typical Buck
 
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Location: Colorado
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Default RE: rough barrel?

Give it some time and let that barrel smooth out a bit. If you are in a hurry, order a box of Tubbs Final Finish and load them up and smooth the bore out! It works VERY well.

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