A couple of years ago I bought a 6PPC barrel off the arfcom equipment exchange. I put together a rifle, but never did anything with it. I asked by Bench Rest brother to check it out for me but the 1:12 twist rate was not what he wanted to mess with. So he chambered one of his 1:14 barrels and said here ya go. Being afflicted with BRD, I did what anyone else would do, built two guns. A Shooter, with the unknown 1:12 barrel, and the Match, one of Bro’s special 6mm barrels. Let the games begin! We fire formed some Sako cases for the Shooter and loaded up 23.5 gr of AA2230 powder with Sierra 100gr SP with an OAL of 2.185″. Our initial test was at 80 yards and we easily got sub 1/2″ groups with most holes touching and multiple hole in hole shots. Now that we know it goes bang we are going to re-cut the crown, check the gas port size and see if we can tone it down a bit, then, put a decent trigger in. Stay tuned….

About tim01

Design and Development
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