https://rimrockbullets.com Give these guys a look. They’ve always done right by me, and going by what I see on their website, Rimrock Bullets of Polson, Montana has plenty of cast .44 bullets for sale - both gas-checked and plain base, and everything from little 180gr, clear on up to 340gr. Also, shoot me a PM - I can help you out with some .44 Magnum brass cheap. Standard and “+P” .44 Special loads in .44 Magnum cases work great - I’ve been loading .44 Magnum cases with light to medium loads for better than 40 years. The truth is, probably 95% of my .44 Magnum shooting has been with what amounts to “+P” .44 Special loads in .44 Magnum cases.