Hello Chuck,

the really fine thing about the 500 A-Square is the possibility to load it to the desired level.

I have loads with the Woodleigh 535grs and 570grs bullets with velocities for about 2150 fps.
=> the light version of the 500 Feffery and the standard load of the 500 NE

But also 600grs and 2300fps are possible, if you need it...

So even if your rifle is a little light for this caliber, I see no problem for shooting it.
(I strongly recommend cross bolts installed and glass bedding of the system.)

best regards
Rolf

PS: After all, since I received my Heym in .500 A-Square I never ever was attacked by an elephant in my garden!