At the 25 yards or so I've been killing them the sound of the gun and the thump of the pellet are close enough together it makes it harder to hear the latter. I've shot 20 now with my 25s and only had 2 run more than 3 feet or so and those went about 15 feet. Nearly half were body shots. I don't doubt that a 30 caliber hole would have ended things a little sooner in those 2 cases I don't think it justifies another gun in my mind. But I'm glad I like your 30 and I don't doubt a bit that it kills effectively.
Yeah buddy! I really like the .30 caliber. It's a real workhorse of a caliber when wanting sure-enough results.