Been sorting through multiple rifles vs multiple ammo brands myself the last couple months....Outside of the obvious, i.e. that 'high quality , match grade 22 ammo, comes with a corresponding high price tag, not conducive to casual plinking or gopher hunting, it has been difficult to determine relative 'quality' of 'run-of the-mill' .22rds.
what works well in one of my rifles, doesn't work worth a hoot in another and vice versa. While exploring the variations, I have had a couple of theories advanced to me on the 'Bulk ammo' concept.
Theory one..Bulk packaged ammo is that which has been 'culled' from regular production runs during quality inspections! (still goes bang..maybe..but not up to the companies self imposed standard for their higher cost ammo.
Theory two...that bulk packaged ammo is that which is 'built' near the end of the LIFE of the tooling used to manufacture it, or in otherwords not held at the initial tight tolerances of new machinery! Sooo run off a few million rds and sell as bulk before we scrap and retool??
Of course, any company that sells 'Bulk packaged' .22 will try to convince us that the economy of less packaging, (one big box or can) allows them to sell it at a reduced cost verses individual round packaging. While this has some merit on the face of it, my tests have shown that NO bulk packaged ammo, regardless of manufacture, measures up accuracy wise (and in many cases reliability wise) to that companies .22lr ammo that is individually boxed.
As to a Brick..like has already been mentioned..is just a bundle of individual boxes, and whether you buy one box or a brick of ten boxes..quality is the same!
Another case of 'You get what you pay for"
cheers!