Does anybody know where I could purchase (or have made) some auxiliary cartridge adapters to shoot the following calibres?

9mm Makarov in a 9.3x62mm
9mm Makarov in a 9.3x64mm Brenneke
.45 Colt in a .450 3 1/4" NE

Thanks for the help.

Try www.mace.com. He is in Anchorage, Alaska. I don't know if he does custom calibers or not but it's a start. Good luck.

Try this link - it should get you to MCA Sports in Alaska, run by Ace Dube.

http://www.mcace.com/index.htm

I had soem problems with the initial supply (customs, rifle I was using), and Ace Dube worked his butt off to solve the problem. He even sent me an updated version of the adaptor, unanounced! btw, I'm in Oz, he's in Alaska- he didn't have to do it, but he made one heck of a good customer relationship!!

Highly recommended.