Hey all! I’m John and fairly new to pcp. Went a little crazy and picked up an Uragan 3 in 177 to shoot in HFT. Located in the Bay Area, I’ll hopefully be visiting Diablo after I get my rig tuned below 20fpe. Happy shooting!
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- Thread starter Jfk742
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Hey John, welcome aboard! Hope you find answers to all the questions that will come sooner or later. Lots to learn but you've come to the right place! Enjoy the ride.
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Welcome and congrats on the U3! You ruined yourself for a whole lot of other PCP right from the beginning, the U3 is awesome and better than most!
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Trying to find definitive information on tuning it has been a little more difficult than I anticipated but my initial impression of it has been really good. I’m going to start playing with the reg to get it tuned to <20fpe. Lots of info to sift through around here so I’m pretty confident I can get it done.
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Your reg is likely at 90b. When you pull it out it’ll be written on it with a sharpie. I mark the setting with a sharpie on the screw, locknut and housing so that you can always go back. A simple line will do. The reg is fairly sensitive, I would not do more than 1/8 of a turn at a time, that will adjust by 15ish bar or so I think.
Once the reg is set adjusting the hammer is easy. Unscrew the set screw so that you can turn the adjuster, screw it out until the valve doesn’t open anymore and then back in the find the exact spot where the valve opens fully. Then turn another 1/4-1/2 turn in to make sure. Done
Once the reg is set adjusting the hammer is easy. Unscrew the set screw so that you can turn the adjuster, screw it out until the valve doesn’t open anymore and then back in the find the exact spot where the valve opens fully. Then turn another 1/4-1/2 turn in to make sure. Done
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Thanks! This approach seems to be the consensus for how to tune this particular platform from the info I could find. I spoke with Tony at Talon and he said to do exactly as you have suggested. Do you have any pointers on “fine” tuning? Is it worth playing with 1/16 or 1/32 turns to dial in accuracy/consistency, or do I look towards the valve/hammer for that? My apologies if the question is ridiculous, my experience is close to zero with this type of design.Your reg is likely at 90b. When you pull it out it’ll be written on it with a sharpie. I mark the setting with a sharpie on the screw, locknut and housing so that you can always go back. A simple line will do. The reg is fairly sensitive, I would not do more than 1/8 of a turn at a time, that will adjust by 15ish bar or so I think.
Once the reg is set adjusting the hammer is easy. Unscrew the set screw so that you can turn the adjuster, screw it out until the valve doesn’t open anymore and then back in the find the exact spot where the valve opens fully. Then turn another 1/4-1/2 turn in to make sure. Done
This rifle is super accurate at 25fpe and jsb 10.3’s, it would be a shame if I can’t shed 100+ fps. If not I’ll just go dedicated slug gun and then save for something more appropriate for HFT.
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No worries! Got a U2 and U3 myself, so… if your reg is sitting at 90b, which it probably will, at least if you have the 600mm regular, I’d probably go max 1/8th of a turn on the reg. Not sure how good the reg will do at 80b or below since the gun is meant for power tbh… the hammer will not help with fine tuning, the valve is 100% balanced and only knows open or not. If you keep the hammer below “fully open“, it’ll be inconsistent and the slightest reg creep will make the first shots maybe not even leave the barrel. Getting a 600mm below 20fpe might be kind of challenging to be honest…
Edit: oh and you may have to modify the stock to give the hammer adjuster enough room to go out far enough for your needs. Had to do that with the .177 U2 as well with the reg at 90b, so below 90b is probably even worse…).
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