First off I am just a average shot at best. I shot my mk85 yesterday using a new bullet combo for this gun; 300 gr noslers and the harvester crush rib sabots. i was using a bench rest, the wind was about 20 mph. at 70 yards i was averaging 2 inch groups which for hunting is fine cause i dont take shots over a hundred yards. the first sabot that came out was almost still like it came out of the package but one petal had been stretched about 1/4 longer. the rest came out looking like perfect and the petals were totally laid; like they would of looked like if i had pushed the petals flat against a wall and they folded out. I assume this is what they should look like.I was using t7 also. what deformed the first sabot so bad, it was seated correctly. i tried different loads from 90 to 100gr. didnt matter,stayed right at 2 inch groups.i think this load went down my barrel as easily as powerbelts do.also what loads have other mk85 users found to be their most accurate.Thanks for all the help people here have been,