HW77 Refurbishment

[p13shooter]

You’re effort will be paid back just by shooting it great job well done,

 

[Deerstalker]

Outstanding.

 

[DKROBE]

How did you find the bluing process, is it straight forward?

YES, need to make sure it is thoroughly degreased before attempting the blueing. I also use a heat gun to dry off after rinsing with water then apply next coat whilst still warm (not hot). Works for me.

 

[Hw80Andy]

Great job mate well done

 

[Medievalturner]

YES, need to make sure it is thoroughly degreased before attempting the blueing. I also use a heat gun to dry off after rinsing with water then apply next coat whilst still warm (not hot). Works for me.

Will give this a go me thinks

 

[Bodge]

13.4 fpe doesn't surprise me with an older HW77, especially having added top hat and Brit Seal.
Had one old 77 kicking at the limit with the original piston seal and the spring finished like a corkscrew.
Normally expect to cut a coil when using a top hat.

Is that due to the longer barrel of the older rifles or is the 25mm piston more efficient than the later 26mm?

 

[DKROBE]

Just taken one and a half coils off and still way over so next step is to heat and collapse a coil each end and retest ( saves all the dressing of cut ends).

 

[shergar]

Is that due to the longer barrel of the older rifles or is the 25mm piston more efficient than the later 26mm?

It was a shorter K barrel with 26 mm piston. In all forms the 77/97 seems to make sub 12 power very easily, especially with a Brit seal that will be sized correctly.

 

[Cinimod]

Cracking job and a really nice result……….dom

 

[DKROBE]

EVENTUALLY, compressed two coils and re-tested, Still over so decided to take another Two coils off. Redressed spring the tested and got 10.7 - 10.9. Stripped, added one power washer rebuilt and at last i have what i was looking for . Avg: 11.5 / STD Dev 0.1 & Spread of 0.2 from 10 shots.