AK47frizzle

In my experience somewhat of a fallacy - surface finish matters more than bore diameter and I believe that for next to the same money a PDI 6.05 will serve you better, but I know of people who use them to great success.

haha found this 

Don't tell anyone that my opinion has changed Mine worked really well but up against the PDI stuff I own I've begun to see they're about the same and one is brass (and one is steel); one doesn't have a long pedigree and the other does, so that would be my reason to putting the PDI above it in the long-run. Also on Daytona Gun they (Orga wide bores) make a lot of sense in the MGs to be less prone to jamming and to reduce muzzle energy without hampering cycling, so with that specific set of circumstances I'd probably recommend one. I still use an Orga wide bore and Prometheus in that MG for those very reasons.

So in short: Is wider diameter any better? No. Will they perform just as well as any of the other top tier brands? Yes.

I've used heavier weights in a 6.05 with flat hops and R-hops to great effect. I believe the notion at the time was that the BB bouncing less on the walls (due to being cushioned mre by air in a wider bore barrel) would produce a more consistent stream of BBs when using anything above .25s, but I've not seen this. I don't think there's much of a consensus on the matter though as you're looking at a small subset of people who bother using .30s, .32s etc. and flat hop/R-hop and use a wide bore