I built a 20 tax before the 204 came out. Great calling cartridge and coyote killer to 400 yds. I like it and the 17 rem but they run out of steam after that. Unless someone makes 60 or 70 grain bullet in 20 cal, all you will gain is a few yds and about 1/4 the barrel life. I think the 20 tac/ practical is the optimum case size for the 20 cal. Just my opinion
