I have an Armco-tuned Norinco 1911.
The first SWCs I tried were the Speer swaged lead ones. These bullets fed very poorly, with the bullet frequently hanging up between the frame and barrel.
I have also tried the 1 groove 200 grain SWC from M.T. Chambers. In addition to being hard cast, it has a much more enlongated nose than the Speer bullets, similar to the H&G #68. These are much better.
The Norinco magazines that came with the gun feed flawlessly with these bullets; the slide can be eased forward on a dummy round and it will still chamber.
I also have a couple 8 round Act-Mag magazines I purchased from Wolff. These ones have the occasional failure to feed, but they still function far better than they did with the Speer bullets. These magazines work fine with RN or TC bullet shapes.
I think the main difference between the Act-Mag and Norinco magazines in terms of feeding is that the round is angled upward more in the Norinco ones, so that the bullet nose can more easily clear the feed ramp.




























