The 85-90 grain load will kick noticable less in a light .243.
My son shoots Federal ammo with the 85 Barnes TSX in his. I loaded up some 100 grn hornadys and he noticed the increased kick right away (wasn't even a max load). He said he'd rather shoot the 85's, and he's 19 now.
The 85 Barnes will fly about 3200'/sec and shoot moa pretty easily. He's taken alot of big mule deer and a couple of whitetail and a doe antelope with his Browning Lever Rifle and that load......Distances have been about 150 yds to 250 yds.
Here's a pic of him with a whietail and muley doe from 2 seasons ago. Guess I should've had him get his rifle in the photo too.
You can see, these are pretty good sized deer. Boy is about 5' 9" and we're guessing the buck weighed every bit of 250 lbs.