Post by elkman1310 on Dec 23, 2018 18:33:14 GMT -5
Dan Muller makes rifle barrels he worked for Rock creek and some others before going out on his own. He is a engineer by trade and designed and built his own barrel rifling machines. State of the art type stuff. Bugholes sells his barrels.
I have always used .237 bore 6mm barrels but decided to try a .236 bore. actually measured .2362 Interior finish was excellent Rock Creek bores his blanks and then he does all the rest. I like the idea of a small shop with Dan doing all the final finishing. Interior finish was excellent exterior was fairly rough finish it took a little time to clean it up but no big deal. I used to spend a lot of time really polishing the exterior of the barrels they looked nice but it causes a glare and it doesn't get rid of barrel heat.
So I chambered it for another 6mm dasher .266 NK with a .135 FB this barrel ran very true and chamber came out great. The other day I did some break in work starting of with light loads and working my way up to see where my pressure and velocity might be with tis .236 bore. barrel is 29 inches long plus a short muzzle brake. Even though it was only 40deg I had no trouble getting up to 2950fps with a 107gr SMK with no signs of pressure . I new somewhere around 33.0 to 33.4 grs would be my accuracy node I wanted to shoot I only had a few rounds loaded at 33.0grs of Varget and the 107gr SMK that shot a tiny group at 100 yards so I now this barrel will shoot right from the start. It cleans up super easy which is a real plus so far so good I won't be able to shoot much past 365 yards if a I get a nice day to test but that has always been a good indicated of how well it will do at 1,000 yards.