Help IDing Diana Model 50

[45flint]

For your predilection, here's mine. Its dated 10 76 (possibly 78). Serial number is 047832. It's doing a very consistent 5.8 fpe, so I think it must be one of the lower powered versions for 10m target shooting.

https://imgur.com/a/isw0LaU

https://imgur.com/a/1gAPuZp

Graining on your stock is exceptional! Looks brand new. Is it a Diana or Original and what caliber? You power seems in line, these were just not that powerful guns. Mines in the 6 fpe. Here is a interesting video from a guy who does excellent reviews. He rebuilds his 1967 Original with a new spring and seal and gets FPE in the 6’s. He is wondering why it’s not more powerful? I want to tell him he got it right up to factory specs. Lol

https://youtu.be/-lp-FLOtlpo