I ask this question about the two brands and types of sabots because I was not happy with groups obtained with the MMP sabot in my new Sav 10ML-II but I now suspect it may have been a heat issue causing the larger than expected 100 yard groups.
I got my new Savage 10ML-II, SR-4759, Hornady .452 250 gr XTP, WW 209 primers, and MMP short black sabots, etc. last year just a couple of days before our muzz gun deer season opened. I carefully assembled the gun and Leupold scope, then went directly to the gun range, and began working on a suitable hunting load. It was late October and the temps were still warm here in Fla at 85-90 degrees in the mid-afternoon.
My initial groups at 100 yards were nothing to get excited about (4" or so) but it may have been my own fault for not allowing sufficient time for the barrel to cool between shots. I would load/shoot, open the breech, remove the primer, walk the 100 yards, mark the target, walk the 100 yards back, reload the gun, and shoot again. I am guessing there was maybe 12-15 minutes between shots of which I thought at the time to be adequate, but have since read here the plastic sabots are very susceptable to heat. Maybe in those warm temps I needed to allow more time for the barrel to cool.
I may order some of the Harvester SB sabots and have them ready to use and can compare to the MMP sabots the next time I get to the gun range.
Thanks for any info.
Dave