Repeating BB-spouters are not going to win any accuracy awards.
***But if the BB spouter keeps shooting when the Pellet gun has jammed, that makes the case for more ordinance on target. Looking at the projects we’ll be working on, I would say that reliability trumps accuracy... for these projects. At least for now. I like that the Winchester M14 has a higher capacity magazine and shoots both bb’s and pellets.
It does seem that paint pellet guns have really progressed over the last few years. But I haven’t heard of anyone posting off critters with paintball guns.
While quantity has a quality all its own, there comes a point of diminishing returns. Roughly 387 shots fired for 6 hits, only one of which is fatal, might get the result of downing your target... eventually... but is not what most would consider an optimal choice all things considered. There is a reason why the adage "One Shot, One Kill" is so revered as a standard.
Plus, sooner or later you run out of "ordinance" with that strategy.
It does seem that paint pellet guns have really progressed over the last few years. But I haven’t heard of anyone posting off critters with paintball guns.
You need to think outside the box a bit more.
Pellets of .177, .22, and even .20 (a la Sheridon fame), .25, .30, and .32 are but a few examples of what is possible. There are indeed projectile-throwers of greater than .177 out there that have been refined over the decades into truly impressive weapons. However, if your primary objective is simply to put lots of BB's into a mass-produced printed telephone directory then you really need to rethink your requirements.
I base things from the point of getting a shot into the target as accurately as possible, since I will probably be shooting from a large distance, to get the prey into the cookpot. Plus, more projectiles used equals more expenditure per round discharged. Not a very effective way to manage limited resources.
A repeating BB-hose however, will pop you lots of balloons, so YMMV.