I just recently purchased a CVA Accura MR-X in .45 I am happy to be able to say I must be one of the lucky ones. Mine came with the forend secured almost perfectly snug as it should be. ( Very simple quick fix, involves loosening a set screw, backing out the bolt the forend locks onto by a tad and retightening the said set screw. Took me less than a minute when I noticed the set screw has backed off after about 50-75 shots to do this process. Sight in took no more than 5 shots from beginning to end. Thing is an absolute tac driver if I do my part. I've ran about 100 or so rounds through it and only issues I've had were my own fault and not major by any stretch. I've heard people say that their bores were oversized or loose... I've not noticed anything close to that. Yes power belt bullets will feel loose then tighten up down towards the breech... There's powder down there and pb's are a thou' under bore diamater in order to load easier but as I've evidenced still seem to obturate just fine. I've only shot out to 100 so far just out of available space for now, but have been pleased with results. An inch or better every time, as long as I do my part. I've even put 3 shots hole through hole. This tells me all dispersion is likely me not following through. As far as the rifle goes it's flawless. Honestly. Can't think of anything I'd change (sometimes I wish I grabbed the 30" barreled LR-X but looking at load data you literally are only gaining about 65fps, for 4" more barrel. Add the muzzle brake I use on there and that's now a long smoke pole to try and maneuver around with in the woods. So yes I do believe I can confidently say I purchased one that I am completely satisfied with. Oh yeah, the trigger adjusted all the way down gets you around 2.5lbs and there is ZERO take up... One of the best hunting triggers I've ever felt. Not an 8oz match two stage, but a PERFECT hunting trigger.
Hope that helped a little if any.