Richard,
I am using a MEC 600 Jr with the short kit to reload the 2 7/8" 10 gauge shells. The short 2 3/4" RST shells load beautifully with 1 1/4 oz loads on my set up without doing a thing different.
I picked up my hulls off ebay and were in about the same shape as yours with rusty primrs etc. I am shooting them anyway and look down the barrels to make sure no base wad flew halfway down them. Shot sporting clays with the DH last weekend with 1 1/4 oz of shot and had loaded some SpredR loads. Made some looooooooong shots. If you wait for the pattern to develope, say about 60 yards or furher, the targets smoke....
Harry
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