If your going to shoot varmits, look at using the Hornady V-max bullet or the Nosler ballistic tip and not a full metal jacket bullet. The full metal jacket bullet will just poke a hole through the animal, where the V-max or ballistic tip will "explode" upon impact (shatter and not exit, thus expelling all of it's energy in the varmit) and causing instant death to the varmit. The FMJ bullets will cause death, but it may take some time for that to happen.
BTW, you may not have success with the first powder\bullet combo you try. So....keep trying. If you have some "reloading buddies" who have some powders that you may want to try, it's "cheaper" to get a small amount from them than it is to buy a pound only to find out that powder doesn't work for your gun.
Of course, the best thing to do is find out what other calibers that powder will work with, then buy those other calibers and load 'em up for that. .....You see?? That's why you should always have at least 25 or 30 different calibers in your gun cabinet. Then it's just a lot less expensive to buy powder that way!!!!
Dave