PCP vs MPP

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The thing is there are way more parts in the system.  Complex systems are always more vulnerable. There's a pump that can fail, there are mating surfaces what can get dammaged where the pump is connected to the resiviour.   There's just more that can go wrong, there's more things for me to forget at home etc.

I ride bicycles a lot, this is why I ride a signle speed bicycle around town.  It's rugged as hell. Nothing ever goes out of adjustment.  It's the bike I ride the most and as such it's the one I like the most and the one that takes the most abuse.

PCP is a step towards complexity that is pretty much against my basic nature. It's not that I can't go there, it's just that I think about it a lot before commiting to a higher level of complexity.

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I live in new england so the temp varies a lot.  I almost bought a CO2 gun but didn't becuase of this. I already have a 10 lb co2 tank too.

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Yup 20 fpe not fps.

I like the KISS principle myself(keep it simple,scot..lol) a blowgun is about the ultimate.A singlestroke pneumatic would be next.There are always compromises. MPP's can be almost bulletproof,springers as well,IF the quality is there to start with AND the system is not being pushed too hard.A full size springer will last for decades without trouble,(spring as well) at 10 ft/lbs.push it to 18 and you'll be working on it yearly(or monthly).A benji used mostly at 8 ft/lbs, sometimes 12,will last decades as well.but make it do 16-18 all the time and expect to go thru parts.Many of the 40 year old co2 guns(bulk) I see  work fine with nothing  more than a few drops of ATF in the tube.
 I guess I'm saying that airguns are inherrently complex,(compared to a singleshot rimfire,for instance).It's all relative,even a PCP system is very simple compared to a cd player,scooter,or, full suspension downhill bike.You can reduce the likelyhood of problems by purchasing well made,lower performance designs (very much like the choice between a singlespeed hardtail and a 21 speed full suspension bike)
  I think you'd like an old crosman bulk gun(114),but your temps wont let it work for much of the year.

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I guess with the PCP you're asking two systems to work together. I shoot rimfires quite a bit and agree that any airgun is inherently more complex.  I like them though.  I am not entirely sure why.  I think I shoot my Daisy 953 most.  It's a single stroke pnumatic.  

A lot of grief can also be saved by buying quality up front.  I good complex bike will easilly outlast a cheap single speed.  But it costs though. I thought this would be the case with my new used RWS 48, but neither the iron sights nor the scope mount are aligned at all.  For a gun that lists at over $300 this is absurd. So, I guess price is no gaurentee of quality in airguns.  Maybe I'll look closer at the BAM 50's.  How is the power adjusted in these??

pretty much cut and try on the spring,but there's a lot of info from guys who've done it on the chinese forum.,even a few posts using off the shelf springs.I'm trying a lightened striker,so far promising....I think of pcp's as multipump guns with the pump moved off the gun and powered,but that's just my twisted viewpoint...LOL