I can’t say how old your mold is, but I bought my first 358432 160gr mold from a small sporting goods store on the Oregon coast in 1972. It also was an Ideal and had been on his shelf for some time.
It sure shot well in the 38/44 Outdoorsman that was new to me at the time. Whether target loads or some warmer ones over 2400, it was accurate.
That Outdoorsman was in another shop and marked as a K-38 and priced at $85. It didn’t take me long to get my money out
I was in there a week or so later and the owner looked at me and said “you got a good buy on that Outdoorsman” with a wry smile. He and I got to be pretty good friends.
That was the same shop where I used to buy my reloading supplies. I forget how much a pound of 4064 was, but he would sell you a pound for a dollar from the keg he had in the basement if you were willing to take it in a paper sack or bring in your own empty can.
Oregon sure has changed a lot since then.