Well I've been watching your 223 build for a long time now, must be close to a year.
for 10 or 11 months now I've had a real nice like new Browning A bolt 223 take off with the boss system comp on it. Waiting to see how yours comes out. well that and finish putting my lathe back together.
havent decided if I want to build it on a romy or a yugo have an unfired romy kit and a couple wood stock yugos, but one of them already has a tabuk barrel in the box with it.
and I think a 24" barrel would look corny on an underfolder.
got a romy and yugo done they still need some tweeking, the rails on the romy are to tight at the back and the carrier on the yugo is hanging on the hammer, dam tapco yugo flat,
The .17 rem case is longer than a 223. are you shortening the camber end of the barrel and then rechambering?