First set of chrony results ! not good !!
Hi guys,
Got my combro chrony in the post the other day and have only just had the chance to try it out ! I shot 5 pellet strings with 4 different pellets :-
RWS superfield : 524, 520, 519, 522, 518.
Polymag Predator : 521, 499, 491, 513, 495.
Bisley pest control : 455, 458, 403, 390, 493.
Bisley magnums : 419, 409, 413, 407, 414.
Now thats not very good at all, is it !! The bottle was at about 180 bar when i started and the order you see is the order of the shots ! This is from a .22 uk storm !
HELP !!! 😯 😯 😮 😕
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Viewing 9 replies - 1 through 9 (of 9 total)
Hes got the UK version, no power wheel.
I have valve lock until about 2700-2800 psi. I now fill my 177 SS to 2500-2600psi, PW4.1, and get 50 powerful shots with another 10 fairly powerful shots.
Put everything back to stock. Set the power wheel around 6 to 7 (tss) and fill to 2800. Blast away and chrony. Increments of 5 on the wheel till you max out.
Difficult to see how bad things are when you only shoot 5 of one type.
Re-fill and shoot a string of 40 using the Bis Mags. Then it will be alot clearer….
Edit- Apply for your FAC !
Its a ball ache but worth it.
No i don’t want a 5 year sentence, just want it running sweet ! Surely there shouldn’t be so much variation !! 😯
the only thing i’ve changed in the gun is the spring, i got a replacement spring and spacer and spring guide kit from leupy ! Think i’ll try it with all the original parts back in ! I’ve noticed some scarring on the top hat, looks like someone tried to get it off with a pliers, the part where it seals to the breech is ok ! Can’t get a decent enough photo as i’ve left my camera at the farm !! Not sure how to convert bar to psi, sorry pab, i’m a mere newbie !! 😀
419fps on the 21grain mag works out about 8.5 fpe 😯 😥
Preds put you about 11.5 fpe
You looking to go over 12 fpe?
Usual info needed mate, plus shoot all the same pellets so we can see whats going on in the string.
what valve type, main spring type, hammer weight, combined spacer and hammer length etc 😀
And use psi dammit! 😆
Viewing 9 replies - 1 through 9 (of 9 total)
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Here we go again….. You tellem Double Gold….