Finally took an opportunity to go do some shooting this afternoon. I had got my parts back from the machine shop for the bolt modification to Tom's Reminigton and still have not shot it. So I grabbed the Remington and the shooting grear and ran to the farm.
The mission was to shoot BH and check for cleanliness of the action after shooting. I ended up shooting 16 shots BH-209, I was throwing 120 grains of powder and shooting Speer and Lehigh bullets.
The gun is definetly cleaner that it normally is even with the Canadian conversion, but I have to say it is not as clean as a Knight with the Lehigh conversion. I certainly could live with it.
This bolt modification does not include a 209 extraction head. You need to install the primer in the nipple with the capper and extract the spent primer with the head of the extractor.
But, as you can see from the pictures, the blowback has been held to a real minimum.

I could only shoot 50 yard, without getting out into the crop fields, but even though the purpose of the shooting trip was cleanliness - the target certainly shows a lot of promise.
I think it might have done better if the 'shooter' had more patience and would allow the barrel to cool.... BH really does warm the barrel up - quicker, hotter, and longer than T7.