Since most 45ACP ammunition is used in auto loaders, the power range of Factory ammunition is very limited.

After all, the manufacturers do not want to turn out ammunition that will not cycle the firearms.

While more expensive, you could look at some of the small boutique ammunition companies that produce 45AR ammunition. This will work in your revolver without the need for moon clips. Also because it is intended for revolvers ONLY, the power range of available ammunition is MUCH greater

You might also try and locate some small ammunition loaders in the Rochester area that supply the ranges and gun shows. They are often willing to do a semi-custom loading at your request if you order 1000 or so rounds of ammunition

Then you could also go the route of buying a shooting glove with a gel insert and just keep using the Winchester