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It will hold air indefinitely, just like an air gun, so long as there isn't an o-ring leak. Would take more $$ to install a gauge into the setup to know what psi it's stored at, but it's never kept near burst disk rating. Whether filling to 250 or 310bar, I simply bleed some to clear any...

Just did a 6.8 cylinder top off from about 245 to 310bar. Took 55 minutes straight run. Head temp reached 120F and water 110F (Ambient 75F). Thought I'd run cooler, then dummy me realized without the outer case on the fan isn't pulling air around the cylinder. So need a long run with it on for...

Around 28 seconds. This really wasn't worth the effort since everything was working. What's 3 or 4 seconds. Well know the saying, "If it isn't broke, don't fix it." Curiosity got the better is all I can say. Hopefully clean up will get me another 100hrs+. If so that's probably another 2yrs+...

Apologies for a long one I'm assuming that it hasn't been just me watching the hour meter climb and wondering whether, "Have I been greasing enough, or over greasing?" Or, "Does my connecting rod still have grease?" Well I figured I'd find out since no one has post anything about a long term PM...

Back woods living has it's perks. Can start mowing my grass at 5am on a Sunday morning and no one around to complain. Could shoot out my windows if it didn't bother my dogs... maybe wife also. Get a big bore and start casting your own slugs. That opens another hole. Lead pot, PID controller for...

Honey I only want pellet gun and a compressor. Well ok. 18 months later I getting the look :cautious:. Still shoveling the hole deeper. Today picked an A/C unit for the upstairs room. My family's 100+ year old house never has had A/C, but I need one now for my gun room to control humidity...

I'm certainly not an expert or know all on the GX4 compressors, far more knowledgeable people on the forums than me. Have had mine 18 months and just hit 100hrs. I've read everything on here I can about them, satisfactions, disappointments, mods, ect. And still reading. My understanding is that...

@JimD Have book marked several of you post on things done with your guns. Going to wait till I learn more about what my gun wants before deciding what directions I might go with any mods. Certainly will be getting spare parts like poppets,o-ring kits, ect.. Long ago learned that spare parts are...

Lots of threads here about the GX compressors to research and get information. Mine's the CS4 and just hit 100hrs, am going to do a tear down inspection and possibly preventative maintenance. Still dead head test within a few seconds of new. Per others here, I added tad of Purple Ice, some use...

You can find a multitude of threads here about moisture control, and filtration methods. We all have to deal with it. Environmental factors will greatly impact your personal needs. I'm often dealing with 50-80% humidity so my filtration needs are greater than someone in an less humid...

Mine has the plastic valve, didn't think to measure it. Hammer Spring is the weak link it seems. If I turn reg up even another .25mm (using measurement of entire reg length when adjusting) the fps drops. Also turning down .25mm and fps drops. Never found a setting where backing off hammer spring...

My GX CS4 says 99.3hr, probably 100 since ran some before installing meter. Lots of direct filling a big bore at the range, and plenty of top offs on 6.8 liter tank (3000 to 4500psi) Not a single issue. Planning to do a tear down inspection and preventative maintenance service this weekend. Will...

Mine is 25 cal. Lots of pellets on the market to try to find a really good match. Thus far it's seems the H&N Baracuda's 30.86gn group better beyond 35yds. Will be a while before I think of moding anything, need to get a feel for the gun first. Likely will polish barrel and crown though. First...

@JimD Got the Shark regulator tuned best I can. The long reach from the muzzle didn't work, reg screw would turn when tightening the nut back. Since reg went to an unknown settings after multiple tries I pulled it and started over. Long process of measuring, adjusting, reassembling, lots of air...

Compare with post #20. They're similar but 1st gun had some tuning before I received it. This one's out of the box factory. And by the time I got to a comparison target I was rushing a little because of incoming rain. It really needs tuning. I'm going to work on the heavier H&N's since they seem...

Thanks for the advice. Did little with the crono after seeing fps simply went down as I back hammer spring out by 1/2 turns. Tuning this will be new learning process for me. But worked alot on trimming a few hammer springs on my big bore to get a good reg and valve balance. Got to get me a long...

Got out with new gun this morning before rain arrived. Sight in was with the JSB's at 25 yds. Believe this one will also like the heavier H&N Baracuda's as the group for range. Appears that 45yds about is the reach before everything starts opens up. But the gun is going to need tuning before...

Thanks for the how to. From what I gather all the XM1 series come with the regs set at 150. I figure that at some point I'll be adjusting more than just the hammer spring. I believe Rich with Airgun Revisions said the .25 cals tuned better for heavier pellets in the 165 range. Obviously I'll see...

Thanks for sear adjustment screw size. Wonder if they've started omitting them intentionally. They're not mentioned in the manual, only found it on a YT video before I purchased. I to wonder what they do with the warranty returns. Really just expected a replacement barrel, not an entire new gun...

New Bullshark .25 arrived today. Got to give Benelli/Stoeger credit for standing by their warranty without any hassles. Shipped defective gun out last Tuesday, got new gun today, 1 week turn around isn't bad. ( I'm only 2 states away from them though.) 1st gun had a manufacturing date 2 yrs ago...