IMHO, too much rifle is relative.....
I've shot crows in the tops of pecan trees with a 17 remington and 20 gr. bullet. If you've ever seen a pillow explode during a pillow fight, the effect is much the same.
I've killed pigs with 100 gr. Partitons out of a 257 weatherby @3,650 fps. and the results were significantly more blood shot meat than a 45-70 using a 400 gr. bullet under 2000 fps.
I've also killed deer using 180 gr. Ballistic tips out of a 338 RUM @3,400 fps, and had the meat turned to jelly for about 12" in diameter.
IMHO, bullet construction and velocity make much more difference that the diameter of the bullet!
BTW,
I love the 376 Steyr on hoglets
ya!
GWB