TOM,
Did you get good penetration on the squirrels? Did they travel far after being hit?
A couple of older fellers I used to work with had a couple of dedicated squirrel rifles themselves.
One of them shot a Whitworth 375 H&H
the other a Ruger No. 1 in 458 Win mag.
Hmmm ...
1) Well, I guess you could say I had a pretty high percentage that had both entrance and exit holes.
2) Yeah, some went quite a ways ... airborne.
I shot a few with .375 H&H over the years. I shot two with a friend's .458, one with a powder puff cast bullet load, the other with a 510 grain factory load. That was pretty much like using enough gun.