I have not heard of a problem

by bj , Monday, December 07, 2015, 20:01 (3213 days ago) @ rob

I know I see people running various 50-55 grain bullets fast out of 20" 1:8 barrels. I don't know that I've seen a 1:7 barrel but somebody makes 1:6.5 barrels for the guys shooting 90 grain bullets. I think if you loaded up 40 or 45 grain bullets intended for a .22Hornet and such you could have vaporization before hitting the target. I've heard that the 1:8 barrels work really well with bullets like the 60 grain Sierra.

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AR upper suggestions please... - rob, 2015-12-05, 08:34
- I've considered just buying a Bushmaster upper, - rob, 2015-12-05, 08:38
- PSA great buys and the work! Also look at DSA - Rob Leahy, 2015-12-05, 08:50
  - Ok, I'll check PSA....who is DSA? - rob, 2015-12-05, 08:57
    - Famous for therte FN FAL rebuilds and new FALs - Rob Leahy, 2015-12-05, 10:21
- AR upper suggestions please... - Gunner, 2015-12-05, 11:03
- Look here at Fulton Armory too. - Miles, 2015-12-05, 11:49
  - Thanks, looks like they have - rob, 2015-12-05, 12:18
    - Thanks, looks like they have - Warhawk, 2015-12-05, 15:48
      - Thats a great deal if these are well made quality stuff... - rob, 2015-12-05, 17:48
        
        Thats a great deal if these are well made quality stuff... - Warhawk, 2015-12-05, 18:01
  - Do you think a 7" twist is too much for 55 grain bullets? - rob, 2015-12-05, 21:42
    - Do you think a 7" twist is too much for 55 grain bullets? - MS, 2015-12-05, 22:30
      - Good, that's what I thought but figured I'd ask to be sure.. - rob, 2015-12-05, 22:37
    - You'll never be able to tell the difference. - Miles, 2015-12-05, 23:05
      - Excellent, thank you. - rob, 2015-12-05, 23:07
    - Do you think a 7" twist is too much for 55 grain bullets? - Cherokee, 2015-12-06, 07:03
    - I have not heard of a problem - bj, 2015-12-07, 20:01
    - Do you think a 7" twist is too much for 55 grain bullets? - Warhawk, 2015-12-08, 00:15
      - I'm not interested in anything under 55 grain at all... - rob, 2015-12-08, 00:46

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I have not heard of a problem