I'm not clear on if the OP is looking for a DEWC or a HBWC. I'm going to guess HBWC because I think that's what the Remington bullets are but there were cast bullets in some of the suggestions.

Zero bullets sell both DE and HB wadcutters. I have used the DEWC bullets but not the hollow based ones. I like the Zero bullets. As said above, the Speer and Hornady HBWC bullets are good too. I can't tell the difference in accuracy.

I happen to like the DSWC bullets better but that is just a personal preference. If you haven't tried them you might want to. There are many more choices with DEWC bullets and they can be driven slightly hotter which is good for small critters when in the woods.

Good luck finding a substitute, I know how hard it is to change after many years of happily using the same components.

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