So I finally got curious about the accuracy potential of the MAD 33AR and the PTR91. With iron sights, I can do OK but not well enough to make hits on smaller targets. The scope mount I got didn’t quite fit the MAD 33AR, so it went on the 91 even though the BDC is for .223 round. Inside of 500 yards, the differences are sufficiently minor anyway. For 5.56mm, the most obvious solution would be MAD 33kAR with Picatinny rail on the receiver.
The eye relief of the 3×30 ACOG is just right, which is good, as the mount permits little variation in position. You can see the faint image of the protective ring around the front sight at the bottom of the sight picture, but it’s not intrusive. Accuracy definitely improved. Groups got smaller by about 50% (close to 2MOA with ball) but, more importantly, the centering of the groups moved much closer to the point of aim. I only wish that the scope had some reticle other than the extra-bright green chevron. Fortunately, quite a few options are available. My top picks would be red cross-hairs or dot-horseshoe, followed by green. Yellow is much harder to see in my environment.
I strongly suspect that the main appeal of PSG1 style “sniper” stocks is in moving the cheekbone away from the stock hump. With the rifle as it is now, one has to be careful of the face placement to avoid eventual bruising. But even with the base furniture, PTR91 usefulness improves considerably with a good scope.