Tuning New Video. Taming the Beast. Tuning the Feinwerkbau Sport

[razor62]

Here I detail the tuning process that I employed to my Feinwerkbau Sport air rifle. I had planned on making a top hat but my lathe operating skills were not up to the task. Hell, it took me three tries to make the spring guide.

Anyway, it's a long one but I think I did a decent job on it and I wanted to share it with my fellow springer fans.

https://youtu.be/0Eggpn-lyPk

 

[Soloshot]

Nicely done! I kept the spring length as factory and only polished ends plus fitted the new guide. Liking the results.

 

[razor62]

It's great to finally have the rifle shooting as good as it looks.

 

[bouddha]

Excellent! Enjoyed the before & after vids. You do good work. Now I'm looking for an FWB Sport or 124.

 

[pmg]

Thanks for the excellent video Razor 62, you’ve got quite a talent in making them. I’ve got a couple of questions on your tune on the Sport though. Are the chrony numbers post tune with just with the 11/2 coils cut alone or with the new Macarri seal installed also? Second, it looks like your design of the spring guide is just a little different from those on the other thread, in that the “washer” part is at the very end instead of up a little on the guide, does it make a difference? You and a couple of other members have inspired me to do this to my Sport and I thought I’d better ask before I go making a bunch of Scrap delrin. While I’m at it I’d might as well ask another, did the tune make any difference on the target? Thanks again for the informational video!

 

[razor62]

Hi PMG,

Ill try to answer your questions in the order that you posed them.

Numbers are with the new piston seal installed

The wider portion of the guide that I turned sits just about as high as the original spring guide. There's a cir-clip which holds the washer of the original at the same height as the forward edge of the new guides' base. There is a circular recess at the forward end of the trigger group which accepts the wider portion of the spring guide so that it sits a little bit proud of the trigger group.

I haven't really tried to do much target work with the gun either before or after the tune. I didn't really enjoy shooting it the way it was. Now that I've got it shooting the way I want it to, I will do some serious target work when the weather around here permits. Right now my shooting bench is covered in 4 inches of snow. So far with the zero in of the scope, I was holding about 1/2" at 25 yards but I haven't even tested more than one brand of pellet.

I hope this was helpful and thank you so much for watching my video.