Sctech

Thanks again, I will give it a once over and try it again as soon as it warms up a little here

Most of the shots were from break in. 1 shot, clean, 1 shot, clean, and so on. It dosent rise until it gets warm, so I didn't notice it right away.

I have a Springfield 6x26x56 30mm tube and a one piece mount. The barrel was bought from a private party and supposedly never fired or mounted. I did follow proper break in procedures as listed by a few barrel manufacturers. To date I would say less than 200 rounds through it for sure, probably closer to 100. Similar question I always wondered because I have other ones I know we're not broke in properly but shoot great, is there any benefit of trying to break in an old barrel? My understanding is basically the break in process is sealing any micro imperfections to keep from copper fouling.

Thanks guys, I will try resetting the barrel first before I go with a new one. I appreciate the input.

Thanks Wash, really the only thing I could come up with as well. I did bring it to dpms to check it but they only took 3 shots and said there was no problem. Any recommendations on match grade barrels?

I did use a torque wrench but it was a couple years ago. The only one I ever did and can't remember if I did it multiple times.

I have tried 150-180 grain all with the same results. I believe 167 match grade remington ammo was the least effected. I haven't tried hand loads yet.

It is not. It is all dpms parts I assembled

Hello everyone, I am new to the forum. I was hoping for some guidance on an issue I am having. I have a DPMS AR10 with an 18" bull barrel, no flutes or break. My first shot and even the ones after if I wait 15mins between are great. The problem comes if I shoot with minimal time between shots. Not rapid fire roughly 1 shot per minute. At this rate the 3rd shot starts to go high and by the 6th shot I am 5 inches high at 100yds. If I wait a while and take another shot, it is back to center. What would cause this?