Well, I "bit the bullet" and ordered a mould from Buffalo Arms. Ordered on Sept 10, delivered on Oct 10. https://www.buffaloarms.com/459-535-...ld-jim459535p1
The mould itself is beautifully made. I managed to fire up the casting pot last night and cranked out about 50 boolits. It was a very short start up and about the 4th cast I was dropping keepers. The mould was easy to use, bullets dropped freely most of the time and it they didn't either a shake of the mold or a very light tap on the handle hinge did the trick.
My bullets are dropping about 1 grain lighter than the sample bullet they sent with the mould so pretty close. I was running close to 800° F, I've had the Lee drip-o-matic for several years but never really care for it. I recently stripped out the bottom pour bits and ran a screw up into the spout to use as a ladle cast pot. I'll try some more with the same alloy at closer to 700° F and see how that does.
Once I've had a chance to load and shoot some of these I'll update.