So, my girlfriend is taking a serious interest in shooting with me, so like I need any little excuse to build a new rifle, I'm considering either of the two rounds due to reduced recoil and expense to feed as well as ease of tuning. 223 because it's cheap and I'm already set up for loading it. Minimal recoil, but might be a bit tough for 1k. 6br because its reasonably inexpensive to load and extremely easy to tune, though I do not currently own one, minimal recoil and better at 1k. Rifle will be single shot, and most likely shot at short to mid range 90% of the time. Probably build something in the 14-15 pound range. Honestly, I've wanted a 6br for a long time, but I dont want her to be the least bit apprehensive about it, and I know the 223 can hold it's own inside of 600 with a rookie driver. So, any other considerations? Not currently considering any other carts, especially wildcats for her.