Originally Posted by Snooper601 As promied, the measurements from a recent SFS HW95K SFS spring HW 95K 30 active coils 3.46mm wire 3.95mm gaps 19.75mm o/d 13mm I/d 223mm free length 16mm preload gave 790fps with 8.4gn .177 JSB Cheers John Excellent info, John.
THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013. NEXT EVENT :- May 2025.........BOING!!
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