As stated you need more throttle. Anything under 3,900fps is pointless.
Good hits will put them down instantly.
I use the same powder charge with the 20gr. V-max and found them fine for fox and great for p-dogs and gophers.
Thank you for your input...I havent driven the 20 Vmax very hard...but I cant see where it wouldn't work well on the hides of little critters.
