Thanks for the link,manufactured1979. Two years past inconsistent extraction. Solved the problem with a new extractor associated springs plunger and pins courtesy of Numrich. Good for another 30 plus years. It gets a lot of use as a working tool on hogs with 55gr Winchester SP.
From experience 223 is ok for side on body shots in the upper 30% of the body.
Front on and rear end shots can be a problem. Especially rear end!