hi. I am looking for a longrange springbuk/blessbuck/varmint cartridge. Here in SA we have though firearm laws so i am basicaly restricted to 3 rifles. I curently have a .303 that i load whith 215gr rhino bullets at 2200fps for bushveld hunting and 174 gr sierra spbt at 2500 for semi savana and farm sd. I am going to have a .375h&h built and load it whith 350gr rhino softs and solids for bushveld big game and 260gr btsp's for longrang gemsbuck/kudu/eland. I want a smaller caliber flat shooter for those longrange springbuck. I am a handloader so ammo availibilaty doensnt bother me. The 243 is a verry popular springbuck caliber here. The 260 is basicaly unknown here and i think the 270 is to much gun for the task at hand.. I am worryd about wind drift in the 243 and the 260's lack of velocity? Wat should i get?