500 Nitro:

I did a search on it too that came up blank, but I finally found it anyway. The string you were referring to was titled Screwgrip and PHV-1. Sorry I don't know how to link it. I just sent it back to the top.

The type unspellable described is the A & W C, which is pictured on the left. Almost all pre-war Evans double rifles were built by Webley. The PHV-1 is on the right. 4Seventy's confusion notwithstanding, they're both screw-grips.
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