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1/12/2010 1:43:53 PM EDT
I am going to order a RRA complete upper kit which will match up with my RRA lower unit. The kit comes with a lower unit parts kit. My question is which barrel to buy. I will punch paper out to 350 yds and shoot some yotes. I think I need either a 20" or a 24" barrel. Which would be the most accurate and which twist do I need. Probably shoot 40-60 grain bullets. Thanks for the help as I don't want to make a mistake.

Mike
1/12/2010 1:47:48 PM EDT
[#1]
Marines shoot out to 500 meters with 20 inch 1/7 twist. Army shoots out to 300 with a 14.5 inch barrel.
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