Back in the 70s, I loaded up a bunch of backwards 148gr. HBWCs, mostly for my aunt to keep in her little Model 36. She was very small, with tiny, but relatively strong hands. However, she was developing quite a bit of arhtritis, so couldn't tolerate much recoil. I forget just what load I used, but I believe I used a light load of Unique. I did not have a chronograph then, but I estimated the loads (from available data) at around 725fps. from the snubby. I liked them, although from the snubby, they would keyhole sometimes. From my 4" Model 10, I don't recall having keyhole problems. As noted above, they expanded like crazy, at least when they did not keyhole.
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