Quote: I had not even thought about the thread size! Makes sense that the non-step action was standardized for the 416 and 350 Magnum and presumably used from that point on for new builds.
Don't know as a fact, but if you are referring to the current Rigby builds, I doubt any Highland Stalker based rifles use the same action as the "Big Game model" .416 rifles. The Highlamd Stalker rifles are designed as "medium action" rifles not big game rifles. Specific action sizes? Don't know.
-------------------- John aka NitroX
...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"