Bill,
No gas checks needed with this one either !
I bought this 38 / 357 Mag. 3 cav. mould several years ago.
I believe it to be an old Cramer.
If I'm correct and it is a Cramer, it pre-dates 1953.
There are no markings on the mould anywhere.
There is no identification on the sprue plate or on the mould blocks.
Must be pretty old ? ?
Cast very nice bullets. Has a generous lube groove like the 477 and 429.
The lube groove on this Cramer has a square bottom lube groove.
Reminds me a lot of the 358477 in its general shape and weight .
You can crank out some bullets with this mould, I spun a bullet in each cavity with fine Clovers abrasive on the bullets. The bullets " jump " from all 3 cavities now when the mould is opened. The mould has very small holes in the sprue plate for alloy to travel through. Doesn't seem to affect the mould at all having such small holes.
The bullets size out nice and round at .358" ( with all 3 bands miking .358" ) , which suits my needs very well. Very accurate in all the 38/357 Mag. revolvers that I've shot it in.
I only wish I had the chance to last as long as this mould will last.
Here are some photos :
The bullets are amazingly consistent in weight , cavity to cavity.