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..............

i shot the 300pt scorpions too. they were about the same as the tmz.

One suggestion for you on the LRH, buyan old style bore sighter. Not for sighting, but rather to check your crosshair zero after cleaning your gun.
If/when you take the barrel off, tightening the rearboltthru the trigger guard, bows the barrel and puts torque on the scope mount bases.

It can be off as much as a few inches.