I have the Talley QR rings on my 500 Jeffery. They have held up to over 400 rounds of full power loads (570 TSX at from 2300 to 2410 fps) been on and off the rifle a dozen times, and always come back to within 1/2 MOA. Not much to complain about on my end, but then again, I have the QR rings not the lightweight alloy ones.

Regards,

Chuck

"There's a saying in prize fighting, everyone's got a plan until they get hit"

Ghost And The Darkness