Any reason why not?

Ah yes, I forgot the rings are different on the magnums.
Out of morbid curiousity, I went round the the workshop, and measured up the comp height of the .040 over slugs that came with my super low buck 318 build. Near as I can tell, they're 1.662". That'd have the compression ratio so low you'd almost be able to start the engine with a hand crank! lol I was hoping to cut the decks, but with a comp height that low, new slugs are starting to sound worthwhile.............