I have a newer Accura MRX in 50 cal purchased at the start of the 2023 season . It is by far the best inline ML I have ever had, except that the Chinese scope is pure crap. The action is tight and can be re-tightened as needed. I believe they use a Trigger Tech single stage trigger that is one of the best out there. After unimpressive results with a couple of different Powerbelts, the best bullet I have tried is the Hornady 290gr Bore Driver. Haven't been able to chronograph it yet, but the max charge of 84gr BH209 WITH the Vari Flame LR primer setup shoots like a dream. I haven't stretched it out yet because of where I hunt, but at 50 yds I'm getting 0.75" all day long. There was also an unexpected gift from Hornady for this rifle. My bore slugs 0.499" and the Hornady 0.500" 300gr 50 cal bullets for 50 Beowulf or 500S&W pistol without the skirt (50 cal FTX #50102) and no sabot shot to the same point of aim with identical accuracy as the Bore Driver, at about half the cost. In my rifle, this unskirted, cup and core bullet is about half the price of the 290gr Bore Driver. Loading the Bore Driver or the unskirted FTX bullet is a perfect slip fit with a fraction of the effort needed to seat a saboted pistol bullet. Feels most like a properly fitted Thor monometal bullet at a fraction of the cost. I shot a small buck behind the shoulder at 50 yards broadside using the Bore Driver with a silver dollar sized exit hole and no bullet blow up with the 84gr by weight load. Easy loading, great accuracy, solid construction, low price. YMMV, but I'm sold on either bullet with this combination. There will ne'er be another Powerbelt down the bore of this rifle as long as I'm shooting it. Both of these cup and core jacketed Hornady .50 cal bullets were a great combination for me.
