Looks like CFE223 is one of the most favored among users, as far as I can find. I guess I will need to find a few lbs. and see what it does. A friend has built a rifle for me, and I haven't gotten it from him yet, but I should be all set by the time I do. Just have to pick up a night scope for this one as well, and I'll have two rifles ready for the porkers.