Most topics / reading material for pcps is redundant to me, I generally seek furthering my wisdom internally, and the few external sources are commonly research papers on related technology that discusses matters at a greater scope than what many air gun forums or youtubers do. From thermodynamics, to Newtonian physics and quantum mechanics, to engineering and machining.
Some people are always seeking the 'latest and greatest' (think slugs, semi autos, externally adjustable regs, ect...), others are more interested in your money and toss in some bell or whistle on a new product to obtain it, others generate revenue by being sponsored or by marketing hype for new guns on their respective outlets/channels, this website has 35 sponsors, certainly due to its traffic and potential to generate exchanges of money for product or services...nothing wrong with it all, but I simply see it all for what it is opposed to the human tendency to idealize...this forum is one of the best moderated forums with a great community, but if you only seek information or knowledge here or of the like, you will cut yourself short, always think / seek outside of the box.
Many people are more interested in spending another 1,000$ on a 2,000$ gun then figuring out how to make a 200-300$ gun shoot equal or better than the 2,000$ gun for the same 1,000$, to each their own but when everyone seeks the same journey its hardly 'your own'. Only a handful of air gunners go through a rifle and truly make it their own, or dare to tear one down to see how they work, or to maintain / repair them, be it a 200$ or 2000$ rifle...Go back to just last year and nearly no one was tearing down and modifying their own impacts/crown, only recently have people dared to tinker with their 2,000$ pellet guns, and the results have been outstanding and just as I've predicted.
Any youtuber: Nope, basically a *****...you won't see them bashing products or shedding light on their downfalls..their content is commonly sponsored or seeks sponsorship...
AGN: Great for beginners or FX fans, but not so much for advanced / diy but that can/may change...stays current with new product releases. Great moderation. Needs more subforums
GTA: Not as friendly for beginners, fair/modest place for advanced discussions. Tons of sub forums and information available.
TAG: Not very active
HAM (hard air magazine): Decent source for reading material but convoluted IMO.
https://www.researchgate.net/publication/326191398_Internal_Ballistics_of_PCP_Airguns The above link has more relevant information for how pcp's function than most care to know, and that only scratches the surface of the canvas that our beautiful 'pcp world' is painted upon.
-Matt
Hi-vel