I was wondering what the general thoughts on MBC is around here?
For reference, I have some of their offerings in various calibers. All coated with Hi-tek.
Initially everything seemed great, no leading, clean to load and shoot. However, as I loaded more varieties and shot them in more firearms, I have started to run into issues. A friend of mine has run into some similar issues.
So far the offerings in 40 Cal have been fine in my Glock 20 10mm at full power 10mm loads.
I have had SIGNIFICANT leading with their 32 cal bullets in 32 S&W long however. No matter what I do, slow them down, speed them up, the barrel looks like a smoothbore after about 100 of them. (for reference, I am running those at 32 S&W speeds like I said which are very mild). We have also seen leading in 9MM (specifically in traditionally rifled handguns). Their 44 Cal bullets have also left a decent amount of lead at mild speeds (44 special levels).
Notably the 32 cal bullets and the 44 cal bullets are both 12 brinnel and almost all of the others are 18 brinell, though it should't matter for what we are doing.
For reference, I have shot plenty of my own cast bullets in the past, both lubed and coated, so I am not new to the quirks of loading cast. Heck I have pushed 11 BHN plain-base bullets at over 1350 FPS in 44 magnum! So I don't know what gives!