The fact is that any bullet can be deflected. Look at all the variables .Caliber, bullet weight, bullet construction, twist rate .He didn't mention the early 444 which loaded a pistol bullet , fragile at the 444 velocities and early twist rate wouldn't permit accuracy with the light bullets.
I try to find an opening in the brush .I have had a 44Mag revolver deflect and I'm sure my 45-70 could deflect also. But that rifle has a scope -- better to find an opening with. Big bore is so nice !