Markings Mystery SOLVED after 25 years, here it is Gents!

The barreled action was made in USA. The variety of proofs means BSA had it run through the proof house. It was 'made for' 220 grain bullets but that's a common marking where Brit makers designated the load to be shot.
I met Heidi several times but didn't know the family connection.
The 'sniper story' is a very common one, but I suspect only a story.
There is an odd mark on the left front rec. ring that I can't see well. Is that a crown BV?
I do see what looks to be a 9 dot 50 'date'. The dot between numerals is used quite a bit for dates of proof but I've not seen it on a sporting rifle before.
Where are you seeing BSA? BSA did import surplus rifles but were better known for their own actions.
Coming from Canada confuses it some, but the Brit proofs means it was proofed at least once and possibly proofed again after a re-blue.

Crown over BV means the incomplete rifle was seen by the proof house and looked fine.
Crown over BP means the proof house is inspecting a rifle barreled action ready for proof.
Crown over BNP means it was shot with a nitro proof load and passed.

Thank you all again for helping to solve this mystery that have been plaguing me for many years!!!

Last edited by KillerBee; 09/27/22.

KB