Ive only used the cci209m primers with BH209. I really didnt notice anydifference accuracy wise from T7 and T7 primers. I havent moved my scope since shooting BH209, but it seems to be shooting everything a tad higher than t7.Im gonna keep testing , just for pattern wise, and whatever seems to group the best at 50,100, and 150 i willdial my scope withthat bullet/sabot combo and BH209 .I was going today to shoot some more, but there were 2 many people. I bought some more knight pbt 290g, and barnes tmz 290g to compare how they shoot with the easy load sabot and the yellow sabot.Its a little cheaper to buy the knights compared to Barnes TMZ.I aslo got some harvester 300g scorpion pt and some dead center 300g to try. I will pass the info after i shoot them all. These 3 cans of BH209 are just itching to get shot..............
