FWB300S service/mainspring

[Eidem]

That was comforting to hear! I expect some wear on the piston buffer when I open mine.

I recently noticed that the breach seal had started disintegrating and it got me worried as I have read
several places about damaged pistons due to old piston buffers.

I have taken the stock and trigger of it to stop myself from using it until I get to replace the seals in it.

Cheers!

[Nikkormat]

A couple of questions...

OK, I now have a standard factory service kit.

Now, do I need to fit it? (Maybe a normal person would have asked that question first, but a service kit is always handy to have in the spares box.)

The rifle is an ex club gun from Germany; it looks as if it's had a hard life, but it seems to shoot well. It has a blue breech seal, but this is no guarantee that the piston buffer is intact. I've not noticed any bits being blown out of the barrel on firing; is there anything else I could look out for which would suggest it's in need of a service?

If I hold the rifle vertically and slap the butt, the action drops back to its rearward position; is this normal? Does it suggest a worn part? My restored 150 does not do this, and I don't have my other 300S here to compare.

Matt

[wonky donky]

Just do the service & you won't have to worry about it for the next 20yrs unless something breaks, not what Feinwerkbau recommends but they can be that good provided you keep the dirt out.

[Nikkormat]

That makes perfect sense, Wonky Donkey. I'm just a bit reluctant to go poking around in there. I'll probably give it a go.

Cheers,

Matt