I finally post a picture of my strange sam yang 909... with some 60 yards groups or shootings (to prove some sort of accuracy of home made slugs through home made smoothbore barrel)...

405 fpe according american airguns calculator (300 grain slug and 780 fps); in Finland we usually speak about Joules (and it is well over 500 Joules)...With some heavier slug there would be even more fpe's, but that 300 grainer is the most accurate slug I have in the moment

I like it better than the original! By the looks of that board you're about ready to go hunting...

Excellent! Good job.

That's some heavy energy too. Very good work. Glad you are having fun with it and finding success. Good accuracy too.

Good to hear from you again.

Gary

Wow, Sepeteus, that is one unusual and powerful 909 you have there! Keep us posted on how it hunts
Regards
Neil

Good job!! Very impressive power! And nice looking too. It must be really fun and satisfying to modify your own guns. I wish I could do the same he..he..