You know, I do not know whether DPMS has a 0.310 bore or a 0.308" bore. DPMS has "purged" their website of all information relating to the 7.62x39 after the embarrassing C Products fiasco. They also refuse to answer questions on the support forum. I don't have time to call during the day. There would be no risk in trying the 308 cal bullets, since it would not be an interference condition, so I am not concerned. If 308 is really too loose for accuracy one will find that out pretty quick when the groups suck. I only managed to fire 2 bullets today, the balance wouldn't chamber, but the 2 I fired struck right at the POI, so accuracy seems fine if I can get on top of making the brass work with the rifle.
So far the trigger has dominated the accuracy issue. I noticed today that the trigger was a LOT better than ever before, but I also noticed it would not reset if released after putting some pressure on it and this I do not like. The sear engagement is really substantial, so I am going to try a stronger trigger return spring first (or more preload, since the movement is small). If this doesn't work, I have to re-cut the sear with a more positive engagement angle.
I don't know if others agree, but I personally need a much larger diameter pistol grip to put my trigger finger the right distance to the trigger itself. Right now my finger is cramped when trying to engage the trigger with the fingertip.
Originally Posted by Natty Bumpo
Does the DMPS AR47 rifle have a .308" caliber barrel or .311"? AK47's have .311 caliber barrels. Sierra's 110 grain, thirty caliber bullet is .308" diameter. They make .311" bullets in 125, 150, 174, and 180 grains. I would assume your Yugoslavian and S&B ammo is .311 caliber.