Ok I'm going to South African in April and taking my 338 win and bow. I hand load for the 338 using 225grn accubonds pushing them out just short of 2900fps. My gun is shooting about 1/4-1/2" groups. Are the accubonds tough enough if I decided to chase some of the heavier Plains antelope? I've shot elk and black bear with this load and they seem to work well.