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Those results are strange. My .25 wildcat came with the hammer spring tension adjuster all the way in. Shoots the 25.4 kings 905 fps and the 34 heavies at 825 fps. Mine also likes the 34 grain heavies better than the 25.4 kings.
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Here's the thing. The adjuster on my wildcat is frozen and I cannot turn it. I tried a heatgun and even a small propane torch with no success. I also stripped out the middle during this process .I used the correct allen wrench but it took only a little torque to strip out the thin aluminum. I was also trying to loosen it first to see how much room I had to play with. I contacted Ernest Rowe and he informed me he had also stripped his out. He drilled two small holes in the outer area opposite of each other and was able to use needle nose pliers to turn it. I tried this with more heat and it won't budge. If I try to turn it any harder something is gonna break.
Having these holes drilled now I can see with a light that there isnt any more threads to tighten it in anymore. I wanted to see if I could get more velocity to shoot the 34 grain heavies faster. But now having those two small holes drilled, the spring lines up with them both, and I threaded two #4-40×3/8 screws into and now when I cock the gun there is more spring tension. Unfortunately I'm out of pellets to test the velocity, my order of pellets are en route. I imagine it should give me more velocity. I know Ernest added two smaller springs in front of the hammer spring on his wildcat , but his regulator is also set at 150.
Having these holes drilled now I can see with a light that there isnt any more threads to tighten it in anymore. I wanted to see if I could get more velocity to shoot the 34 grain heavies faster. But now having those two small holes drilled, the spring lines up with them both, and I threaded two #4-40×3/8 screws into and now when I cock the gun there is more spring tension. Unfortunately I'm out of pellets to test the velocity, my order of pellets are en route. I imagine it should give me more velocity. I know Ernest added two smaller springs in front of the hammer spring on his wildcat , but his regulator is also set at 150.
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Thanks CHUCK. Right now I'm shooting the 34 grain heavies average 825 fps. I'm just trying to get them up to 860 fps . At 50 im getting 3/8 to 3/4 inch group's which is awesome. I'm just trying to see if I increase the velocity to around 860 if that will tighten up the groups a little at 100. I don't want to change anything about the wildcat, but maybe now seeing the accuracy even out to 65 yards ( 1/2 inch) I would like to test this out. Thanks again for all the info. Once I get my pellets , run them over the chrony and shoot some groups I'll let you know the results.
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CHUCK Thank you for sharing your observation especially the number of turns for the hammer spring in the Wildcat. I don't think I've ever seen it elsewhere. + 1 for you Buddy!!
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I haven't followed this whole thread but for those interested there is video on adjusting the Wildcat here.
http://sniperlabyo-precision-airguns.com/wildcat
Ernest states you really need a Reg pressure tester to do this reliably and doing so on a new gun may well void your warranty.
http://sniperlabyo-precision-airguns.com/wildcat
Ernest states you really need a Reg pressure tester to do this reliably and doing so on a new gun may well void your warranty.
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Only thing is that extra 35 fps you are looking for makes very little differene in trajectory if you look at the ballistic tables.
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OK. So I discovered the same behavior with my .25 Wildcat as Chuck has described. There is a sweet spot on my rifle at 5 turns in from flush. I think I know why this behavior exists on FX guns (and probably why the nut is glued in place). The hammer on these guns is free floating and tightening the spring past the sweet spot may be shortening it's distance of travel and therefore reducing the hammer's inertia. Just a theory as to why, but also to confirm what Chuck has described does indeed exist on these guns.
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Hey CHUCK and guys. Well I got my pellets today and ran them over the chrony with the hammer spring compressed some as I explained in my earlier post and the results were just like yours and SundanceKid. His explanation for this must be right. Thanks guys.
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