It was too iffy on the aics mags for me to try. I went with an impact .223.
I currently have my vector in a kmw sentinel. It’s feeding aw mags perfectly after filing the mag catch and opening feed lips.
I just stuck a .223 mag in it and it seems like it would feed fine even with pressure from barricade against the mag. It does bind if I put upward pressure on it, but it has to be straight upward pressure. So I think it would be fine under normal conditions.
There’s also a trick I read somewhere about taking two small zip ties and strapping them tight against the mag where the tips won’t let the mag go any higher.
From what I can tell, running a .223 in a vector is going to be chassis dependent on how easy it is for the mag to be overinserted. I think it would work good enough for matches in a sentinel.