I'm getting ready to load some 140 BT's for my 22" 7mm-08 Bergara Hunter. I know it will spin 162 ELD-X with 39 grains of IMR 8208. I got good groups at 2653 fps and a 4.7 SD. Going to use Big Game for the 140 BT's. Redding body die and a lee collet die :)
I wish I could find some .284 140 grain Game Changer bullets. I like the price in a 100 count box. The .277 Game Changer bullets have been available on multiple sites.
MagnetoSpeed V3 works for me. Have to adjust on the pencil barrel 280AI but seems to be consistent.
It moves POI a little but does it consistently if that makes sense.
I like bags for rear and an adjustable rest for front. I make sure the front sling stud doesn't come in contact with front rest during recoil. Nice smooth slide to the rear during recoil. This doesn't apply to my experience with my 223 bolt Savage PC carbine. My tiniest group on that rifle...