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Early FWB 300 (not the "S") single or double spring?

December 6 2017 at 10:32 AM
Paul Stauffacher  (Login morgoth45)
YF12


I'm mechanically unadept so my inquiring mind would like to know! happy.gif


Thank you,

Paul S.

 
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Frank Alessio
(Login fsa70)
YF12

Single Spring

December 6 2017, 11:04 AM 

The early 300 ( no S ) came with a single spring. I put a new spring in my 300 in May and here are the before and after results after it was installed..





FWB 300 ( 1969 Build ) Chrony Results
Before .... After Rebuild
5/1/17 .... 5/5/17
JSB 7.33 .... JSB 7.33

1.. 577.5.... 646
2.. 584.9.... 651.4
3.. 581.7.... 649
4.. 582.5 .... 643.5
5.. 589.2.... 643.3
6.. 574.3.... 643
7.. 581.2.... 646.3
8.. 592.6.... 648.1

9.. 588.6.... 643.9
10.. 578.3.... 645.3
11.. 577.4.... 646.8
12.. 577.2.... 646.2
13.. 584.7.... 643.6
14.. 579.4.... 643.7
15.. 588.2.... 647.3
16.. 576.6.... 644.7 ( no S ) came with a single spring.


    
This message has been edited by fsa70 on Dec 6, 2017 11:13 AM


 
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Paul Stauffacher
(Login morgoth45)
YF12

Thank you very much!!! n/t

December 6 2017, 1:16 PM 

.

 
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Lance Bernard
(Login mrpointy97)
YC

Frank, whose spring did you rebuild it with?

December 6 2017, 6:24 PM 

Maccari’s, or another source?
Thanks!

 
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Frank Alessio
(Login fsa70)
YF12

Lance

December 7 2017, 5:47 AM 

I used a Maccari spring.

 
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ChrisK
(Login r1lover)
YF

Frank, and did bumping up fps affect your accuracy? n/t

December 6 2017, 6:50 PM 


 
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Frank Alessio
(Login fsa70)
YF12

Chris

December 7 2017, 5:52 AM 

Here are the results at 25 yards after the new spring ( and seals ) were installed. May not be good enough for some, but for this 71 year old blind man, I'm very pleased with the results.


https://imgur.com/a/qF98B


    
This message has been edited by fsa70 on Dec 7, 2017 5:56 AM


 
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ChrisK
(Login r1lover)
YF

Thank you Frank. Enjoy your revived air rifle, they're great guns. n/t

December 7 2017, 8:43 PM 


 
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Patrick
(Login pat601)
YF12

On speeding up an FWB300S...

December 9 2017, 5:32 PM 

I have some experience with that.....
Several years ago the 300s were "rediscovered "....several guys here on this forum ( and I believe Jim Marccari himself )began hotrodding these guns with the idea of using them as FT guns...guys like Hendrick, Leonard, and Barube...took home prize loot too.

So to answer your question concerning accuracy, No there is no loss of accuracy, BUT these guns will change their pellet preferences....usually to a domed pellet...I personally have sped up over 20 guns....every single gun shot the AA7.89 dome pellet as its favorite...
JSBs... rs 7.33s, AA8..44s...all shoot well but ...as stated the AA 7.89s...

If you're shooting paper in the basement at 10yds I'd stay with an OEM double spring set....
If you're outside mini-sniping or doing some pest control go for the speed, truly you will amaze yourself at the accuracy easily extracted from these gems.

And yes the later double spring set fits in the earlier 300


    
This message has been edited by pat601 on Dec 9, 2017 5:35 PM


 
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FANG(LOBOWHITEFANG🎯)
(Login LOBOWHITEFANG)
YF12

Dating Fwb300

December 10 2017, 2:56 PM 

There were some FWB300S stamped guns that were 300s guns.

Caught in the transition the receiver and barrel were used.

Here is a way of checking the year made of the FWB guns.

http://www.pilkguns.com/tenp/fwb300date.htm
FANG
JUNKYARD AIRGUN'S

 
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