Mike
I bought one when they first come out and think they are awesome if used right..I will NOT put too much weight in the holder so there is still some recoil and therefore feel it will protect the rifle stock better..

As to point of impact--I use in only with the big guns --416. 458, etc...and as they are all close quarter guns..100 yards or less..have not noticed much if any as too change of impact from the lead sled to standard rests...

Ripp