Anyone tried these bullets on long range whistle-pigs? I would like to use the same bullet for marmots and elk. For marmots I am currently shooting the 135 gr. SMK's from my .270 and have had good success out to 749 yards. My goal this year is to break the half-mile mark with this rifle and the 150 gr Bergers have the highest BC I can find. Just not sure if they will expand enough on varmints for quick kills.