Ha ha! I will tell you there is no such barrel superior to russian one either.
Cheers, then. I have seen the original OFB document. Since you can't even perform a basic Google search, then forget it.
2A46M gun on our T 90 can fire svinets 2 & 1 ( the round on the above pic is svinets 2 ). You don't need a new gun , just need to upgrade autoloader. It's written on it. DOP will be low though.
Can't just replace the autoloader. You need to replace both the gun and the autoloader. It's a package.