Wanting to use this cartridge for varmint/deer. Just wondering what freebore length anyone is using for 70gr BT's to 85gr TSX's? Holland and Pac-Nor's reamers have no freebore. Kiff thinks .050 would be about right. I am not set up to make a dummy round as this will be my first use of this round and wondering if anyone else has experience for this use?