Sorry to revive an old post, I've tried searching with no luck. I'm thinking of getting a PCP, probably a Falcon mutlishot profile with bull barrel, what is the practical difference between the different bar pressure ratings? Obviously the size of the bottle relates to how much air it can hold, does a higher bar rating mean more as well? I'm not the most technical of people so a nice easy answer would be most appreciated! Does it matter what the bar rating of the gun is?