Source for Lyman/ RCBS Lube-a-Matic dies

[375H&H]

Once upon a time, in Canada, it used to be fairly easy to acquire bullet casting equipment. Unfortunately times have changed, and not for the better.

I am looking for a Canadian source for either a Lyman or RCBS sizer die in .431 diameter.

If anyone has a reliable source for this die and other casting equipment please post