I've worked up a 69gr SMK load for my 12FCV 223. I used Win brass, CCI#400 primers, H335 24.4gr. .010 off the lands. Chrono avg via calculator is 3060fps. I don't have SD's because I didn't shoot groups but fired round robin with my loads. At 300yds the spread is 1.7in. Winds were 5-10 mph and shifting as they always do inside the berms. My question is should I attempt to achieve tighter groups with this load before I load a couple of boxes and get on with practice? I don't know what to expect with a 223 at this distance. I hope to use this rifle out to 600yds at some point, but my primary target rifle is a .308 10FP.