They work fine as long as you don't push them too hard....they may be hollow points but they are still lead. The lead alloy hardness and the lubricant used will determine how fast they can go before they lead . If they have a gas check , they can be pushed easily to a decent velocity. Lyman makes a gas checked .357 SWC mould (#358156) that in hollow point form is one of the best.
Gary
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