I posted on another thread about this Lee .458 340 RNFP mold. It was casting at .465. Pat at Lee said to send it back to them, they'd replace it.
Well 3 weeks after sending the lee 340 mold back it was replaced, got it Thursday. An inside measurement across the top gave me .460! It should be a good one for plinking!
Now after casting with it, I'd rather have the original back! The new mold actually has the blocks pinned off-center on the handles. That causes them to not line up while being closed. Add to that, the pivot bolt in the handles was cranked so tight I couldn't open or close them. Then there's the sprue plate, it to was so tight I could hardly open it, a little bull plate lube fixed that, but it had already galled so now the plate won't sit tight on top of the blocks. A fin is formed on the base of the boolit. finally you have to beat on the pivot to knock boolits loose, they certainly don't DROP OUT!
I'm going to be on the phone to Pat again, this time he'd better send a good mold! And no, I'm not sending this one back, I might as well have bought a Lyman mold for all I've already spent in shipping and the original cost.