I got a box of the Speer capsules and have been very happy with the results on snakes. Powder recommendation are right on the box as stated. Hell on snakes out of my SP101. I use #8 shot.
"Once you quit hearing sir and ma'am, the rest is soon to follow." - Cormack McCarthy
"Feed me, or feed me to something. I just want to be part of the food chain." -Al Bundy