Gunner,
Sounds like that hi vel load may jar the shooter worse than a slower vel big gun like your .505 Gibbs. Less push back for sure, but maybe more "jolt"?
DF
DF, I have fired my Buds 416 WBY so loaded, it gives a very fast and violent recoil, his is in a big Micky stock, no flex like wood.
The Pendleton brake on the factory WBY's help a little, but as far as sheer bone jarring recoil that old 505 pushing the 600 gr Woodleighs at 2450 fps with 145 grs H-4831 SC is a dirty rotten mule booting dog in it's own class.
My new loads feature the same bullets, both soft and solid at a more sedate and civil 2200 fps. LOL
Gunner
