I shoot .223 from a CZ 527, and have been having a good time working up some plinking and target loads. I have been shooting both 55 gr Hornady softpoints with cannelure, and also 55gr cast gas checked (Lee C225-55-RF) pan lubed, cast with Hardball 92-2-6 (similar to #2). My current favorite 100yd load for the cast boolits is 13.0gr IMR 4227 with Cream of Wheat (CoW) on top to keep the powder at the bottom of the brass against the primer, slightly compressed. Just shot it yesterday, great accuracy at 100yd (about a 1.5" group, which is good for me). Haven't chrono'd yet but my guess is just a bit north of 2,000 fps (probably closer to 2,100). No leading, I believe due to the gas check, relatively hard alloy, and I've heard that the CoW may have a "scouring" effect. My 50yd load is 12.0gr of Accurate 5744 (although I shoot SW Buffalo Rifle as a substitute, and my understanding is that Lovex used to make 5744 for Accurate and it's exactly or almost exactly the same powder...sure behaves like it) with no CoW buffer and the same boolit. Feels like shooting a 22 Mag (almost no recoil) and I can get nearly same hole hits at 50. I have chrono'd that one at 1815, +/- 10fps. Anyhow, I'd be interested if others have any "pet loads" in 223 for target work and entertainment. Also, I haven't come up with any real favorites for the Hornady 55 grainers, so suggestions are welcome.