You may be right sabotloader, the longer bearing surface may have an influence. Or maybe the extra weight is causing a better seal at the sabot cup.

The gun in question is a Lyman Mustang with a loose bore. I've used MMP-24s in it and, in fact, did a MMP-24/Crush Rib comparison a while back. The Crush Ribsproduced better groups, even though velocities were real close between the two.The comparison was with 300 grain bullets only. It would be interesting to repeat it with 250 grain bullets.

See my comparison in the following thread (be sure to scroll down to the comment with pictures of the sabots).

http://www.huntingnet.com/forum/tm.aspx?m=2153706&mpage=1&key=Sabots%2cmak e%2cdifference&#2153781


The MMPs are not hard loading in my gun. They just don't do as well as the Crush Ribs. I haven't tried the regular Harvester sabots.

Haven't shot for the last month. Temperature in the mid 90's with humidity in the upper 70's just does not draw me to the range. Can't hardly wait for that first cool front in late September.