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  #11  
Old 03-02-2018, 01:22 AM
RedfootRanch RedfootRanch is offline
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Dan, how many grooves are you running in the barrel of this gun?

Thanks!
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  #12  
Old 03-02-2018, 01:36 PM
B23 B23 is offline
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FWIW, my 20-250 has a Krieger 1-8tw and it's a 6 groove barrel.
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  #13  
Old 03-02-2018, 01:42 PM
Dan Brothers Dan Brothers is offline
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Mine is a Pac Nor 8 tw... so I believe it's a 3 groove


Pac Nor

20 (.204")
3 groove 7" 8" 8.50" 9" 10" 11" 12" 14" 16"
Polygonal 11"
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  #14  
Old 03-07-2018, 10:48 PM
Alycidon Alycidon is offline
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Quote:
Originally Posted by L.Sherm View Post
Nice to see RL15 worked for you Dave. Theres alot of debate about what twist for the 55"s you and I have spoke about it. My 9 works awesome. My personal feeling is a 9 is plenty for the big 20's if you need a faster twist for a slower 20 then a 39-40 would be a better fit because the velocity loss versus B.C gain is a wash or loss unless of course you just wanna do it. Anyway just my 2 cents.
1 in 9 Bartlein with 39gr SBKs works great for me at about 3700.

A
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  #15  
Old 07-07-2018, 10:11 PM
Dan Brothers Dan Brothers is offline
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WOW.. those are some very long pokes for a PD size target..... but I never doubt the ability of the 20-250...GOTTA LOVE'EM


https://photos.google.com/u/1/photo/...wfgtMChwijp2ND
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