![]() It's all in the settings but I now have a much more consistent rig that doesn't need to beat the ever loving heck out of my valve and I can potentially get more than I wanted, (I don't ever want to go above subsonic) I now know I can definitely put the 27" 1:8 on her & do some direct comparisons of the Griffin 50-65 grain 4S. Well, I heard it crack & chronograph confirmed it. I further discovered that my 28 grain RBT Griffin slugs that were going 1080fps jumped to an amazing 1175fps when shooting over my chronograph and pressure fell below 2150psi. But I soon discovered I could get a lot more power from utilizing my step down in-line reg and running a much lighter hammer that didn't drag at all on a 2300psi fill. I had a rifle come set for sending 36 grain FB NSA slugs at 900fps on a 3K fill. I'm just pointing out the relevance to your question on what pressure to fill to & why. That's great for anyone who wants to walk and hunt, compete, as per the rules you can't be tethered.įor me & a few others shooting with a step down in-line reg is the way to go. Just realize these high pressure fills, valve/hammer weight/spring set up are for the sake of a shot count. MSWP (Manufacturer Safe Working Pressure) as the good gentleman above suggested. However my original question still remains unanswered after your sensible opinions that I share Just why is there such a great difference in the psi limits from various manufacturers swinging from 2000psi to 4300psi? Are they all capable of the same psi fills and have the lawyers set the limits? So far I don’t get it and want to learn. But even though my Avenger 25cal rifle only cost $279 it must be said that it functions great, and after bore lapping is extremely accurate with great adjustability, velocity, and impact. Odoyle, I truly understand the cost vs quality aspect. I am still left wondering just why the pressure limit swings so widely between different brands. ![]() I also have PCP rifles with bottles rather than tubes and the factory psi fill limits do not seem to reflect any difference from the tube type even though the cc capacity may be more than double. ![]() Fancy walnut stocks always invite me to improve on them and somehow make the shooting experience better. As I am an old gun collector with a new interest I thirst for knowledge and welcome all thoughts and experience. I also prefer the smaller tubes even though they must be filled more frequently, aesthetically they are satisfying and in the end do the same thing without looking gangly. Thanks to Ripper and Odoyle for your information, Look at Master Earnest Rowe for example who doesn't even fill his own personal target grade FX Impact past 2800psi that's gotta say something. I would personally only fill it to no more than 3000psi if I wanted it to last regardless of regulator because it's common sense when stressing the input side of the regulator above 3000psi things eventually get screwed up. What kind of high pressure safety engineering can be done for a gun that retails for only $299-? It probably only cost AV less than $100 apiece straight from China. It's NOT a $1000+ tough built Russian Ataman nor an $1800 Huben with titanium air tube that have the engineering and cost associated which warrants overfilling the guns past 3500psi. That's why my take on such ridiculously high fill pressure common sense would say dont fill past 3500psi. After its one year warranty is over and it breaks its expected to be thrown into the trash-dumpster and the airgunner is then expected to just buy another new one. The Avenger is built to be a disposable consumable gun just like certain Chinese compressors. There will be people that will probably do things differently but I’ll do it this way for safety reasons. ![]() And if my gauge on my compressor doesn’t match What’s on my gun, I’ll just go buy the one that reaches 2900 first. If your gauge doesn’t have a redline, don’t worry about it just keep an eye on the numbers on the gauge. So to be on the safe side I’ll fill them up to 2900 psi. All gauges can vary from rifle to rifle on how accurate they are. You don’t have to fill to the maximum fill pressure either, but just remember you won’t get as many shots. Gauges are either measured in bars or psi. And it does have a regulator so if the regulator is set at say 140 bar, then when you get to 140 bar pressure on your gauge your feet per second is going to drop quickly. I don’t own an avenger but that sounds right on the fill pressure. Those are the maximum fill pressure that you should use.Just remember that the Cayden doesn’t have a regulator on it so your feet per second is going to have a bell curve with the highest being in the middle of the fill Pressure.
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