FWB 300 tuner

[Harves]

I want to have my FWB 300 tuned & need a recommendation. I have been in contact with Motor Head but would like other recommendations from users who own this rifle & have had them tuned.

[Hoosier Daddy]

I bought one of Joe Rhea (Cyclops) numerous 300S he seems to find.
 I don't know what "tuning" was done, if any, but his rebuilds are very nice.
What Tune are you wanting from an already marvelous platform?

[WildCJ5]

Not sure about tuning on the 300 but Dave Slate has been working on these things forever.

He rebuild a Diana 66 Gis years ago for me and it is still going strong.

https://www.airgunwerks.com/

[Motorhead]

Not a rifle one really can per-say "tune" ... but SERVICE Yes.     
These guns are a high precision 10 meter gun, steel ring piston in lieu of a convention seal, short stroke and a modest spring energy.  In factory form / tune the recoil is balanced to action of the SLED mechanics that damp its motion.
Jack up the spring energy you just unbalance the system and often get a harsher & less accurate shooting rifle.  Power gains if done are give or take 50/75 fps over stock IIRC ... not worth it IMO.

If gun shoots fine with @ 8 grain pellets in the 550-580 fps range your in the sweet spot and strongly suggest you just enjoy the rifle for what it is and go no further in attempting to juice it up.

JMO tho ...

[DIABOLO]

I know a guy that "tuned" his 300s and put too strong of a spring in it and it ended up ruining the gun.  All of the cocking over and over ended up breaking the charging handle and peeled the spring housing back.  I wish I still had a picture.  It was a big wake up when I realize that excess wear and tear does to a platform that wasn't engineered that way. 

[Frank in Fairfield]

What Scott said!

[justinp61]

Not sure about tuning on the 300 but Dave Slate has been working on these things forever.

He rebuild a Diana 66 Gis years ago for me and it is still going strong.

https://www.airgunwerks.com/

^^ This ^^

[redcobra04]

I have one that sent to David Slade. The reason  was the seal had deteriorated.
Excellent service and excellent  results. Gonna send a 300s match to him also.
This one has to much twang.

[mafatone]

Not a rifle one really can per-say "tune" ... but SERVICE Yes.     
These guns are a high precision 10 meter gun, steel ring piston in lieu of a convention seal, short stroke and a modest spring energy.  In factory form / tune the recoil is balanced to action of the SLED mechanics that damp its motion.
Jack up the spring energy you just unbalance the system and often get a harsher & less accurate shooting rifle.  Power gains if done are give or take 50/75 fps over stock IIRC ... not worth it IMO.

If gun shoots fine with @ 8 grain pellets in the 550-580 fps range your in the sweet spot and strongly suggest you just enjoy the rifle for what it is and go no further in attempting to juice it up.

JMO tho ...             Tune? There's nothing to tune. This rifle is already maxed out from the factory. What Scott says is absolutely correct. During the rebuild/service process, you can add a hot spring for more FPS. You can accessorize it to the max with an eye cup, anti glare tube, knee rest, palm rest, front sight inserts, eagle eye etc.

[Harves]

What I am looking for is to have the FWB 300 serviced as nothing has been done to it since purchase in 1984. Shoots fine so perhaps the best advice is to leave it as is?

[Motorhead]

What I am looking for is to have the FWB 300 serviced as nothing has been done to it since purchase in 1984. Shoots fine so perhaps the best advice is to leave it as is?

As stated ... if it is shooting to spec, keep shooting it until it falters.   If not subjected to high humidity, salty environments or just filth in general it likely is fine.

[DIABOLO]

What I am looking for is to have the FWB 300 serviced as nothing has been done to it since purchase in 1984. Shoots fine so perhaps the best advice is to leave it as is?

Like what was said above, if there is nothing wrong with it then no reason to take it apart.  I  have had those old white seals last a very long time and still have a couple in 300s.  If you notice any residue or they are starting to crumble then have it done. 

If it really gives you piece of mind, you can get the seals replaced and then it would be good for another 30 years.  It's not too hard to do yourself either.