I acquired a dandy Lyman 429434 that is listed as 215gf FN GC for the 44-40 and shows in the old Lyman books for the 44-40. It casts very consistent bullets but they weigh 240 gr with the check.
I"m not sure if someone has altered the mould or if they were available in different weights.
Also the current Lyman gas checks are very tight on the heel, but according to Lyman's web page their check are now crimp on style, could be the old slip on type would fit just fine.
Anyone with some knowledge of this mould, I would appreciate your post.