My rifle was shooting well the monsters redesigned @895 fps approximately 50 shots per fill... i think the shot count is very poor and also saw that pellet spiraling afrer 50-60 meters..... so i reduce de reg pressure and also the valve opening (in this rifle HST is not adjustable, here we move a screw that controls how much the valve will open) and know its shooting the 18.1 @930fps and its giving me 130+ shots..... haven’t test for accuracy yet, did someone have tested this 18.13 gr out of a LW 24” poly barrel????
Daystate Wolverine R HP .22
- Thread starter Jlacouturec
- Start date
I tuned it @930 fps with 18.1gr... reg pressure is at 140bar and couple of turns to the hammer screw anti-clockwise and thats it... i will test accuracy and will update the info!!
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Same thing happened with my recent Wolverine R purchase. I bought one from AOA and asked them to adjust it to 19.5 fpe which they did (in Arizona). WheyI got it,here in Wisconsin, it was shooting 21fpe and shot count was 57 as opposed to the advertised 160. I backed off the hammer spring a tad and reduced the 10.3 gr pellet velocity from 940 to 930, which is 19.8 fpe at my location. Shot count is now 160. Be careful when pushing the power limit. Temperature and altitude do have a big influence.
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Hammer spring preload is not adjustable on the Wolverine R / Wolverine R HP.
I believe that you are referring to adjusting the “length of hammer throw” in Daystate’s slingshot hammer.
Length of throw (distance the inner part of the hammer travels) via loosening the lockdown grub screw on the SS hammer (circled in red in picture) and then inserting a 3mm allen into the hole in the back of the action and turning clockwise to increase length of throw (increase power) or turning CCW to decrease length of throw (reduce velocity).
Its interesting that you experienced such massive inefficiency with this adjustment going from 19.8 to 21 fpe. I always thought that might happen with these slingshot hammers when you approach the outer limits of their adjustment range…. that they lose their effectiveness when you adjust too far from the middle of their adjustment range. Shot count of 57 vs. 160 certainly proves that !
If you are interested in adjusting the actual hammer spring preload on Daystates (Huntsman Regal/Revere, Wolverine, Renegad, etc), you can accomplish this by shimming the hammer spring - Daystate uses the same 18mm OD hammer spring in all the rifles I mentioned.
I’ve found the perfect spring end caps and super thin washers (.5mm and 1mm thickness) for these springs on AliExpress. You do have to be careful removing the action end cap on the Wolverine as there is a very small internal spring under tension that might get bent & jammed or fly out when removing the action end cap. Its best to remove this little spring and little ball bearing PRIOR to removing the Wolverine’s action end cap - to do this you remove the cocking lever bolt and then stick an allen key or punch in the hole with a magnet on it. Spring and ball stick to magnetized allen making it easy to simply pull them out without damage.
I’ve also found great replacement springs on AliExpress with varying wire thickness (and length) if you really want to play around with your Daystate’s tune…
I always thought the .22 Wolverine R HP factory tune was “sub optimal“ as Daystate seemed to make it specifically for the 25.4g MRD pellet - and 895fps was about all they could get from the platform with its constricted transfer port (reg pressure required was a high 160-165bar). This Daystate factory tune shoots the 18.13g at 1,030fps - which is not optimal, although the HP barrel does retain accuracy at this higher than necessary velocity.
Now that JSB has introduced the 20.83g and JTS and AEA have introduced 22g pellets, The .22 Wolverine R HP seems to have better suited pellet options.
-Ed
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Thanks for the tips. I'm going to leave it as is, since I want to use this rifle for FT and have to stay within the 20 fpe limit.
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