I have found the Golden Bear ammo shoots just as well through my 7.62 X 39. It all may be dirty shooting, but don't you clean your weapon after a day at the range anyway? I have also shot the Tula ammo through my .45 and SKS. No jams or any other issues.
Depending on what I'm shooting, I sometimes clean my guns during a day at the range. I used to have a BuckMark I had to clean after every 100 rounds (50 with Eley ) but if I can avoid doing that by using different ammo then I'm foolishly losing out on shooting time not to.