So, looking at the results, I (who suck at statistics) would conclude:
1. Tighter bore = higher velocities.
2. For one-piece barrels, 14" is the ideal length.
3. For two-piece barrels, the length of the tip matters a little, but anything from 10-16" is going to perform about the same. Yeah, they varied, but the differences were all pretty much within the standard deviation. With things that close, personal preference (ergonomics) is probably more important when actually playing paintball.
Any ETA for the results of your accuracy tests? I'm planning to buy a new barrel based on the final results of these tests, and I was hoping to have that show up on my December budget instead of January.
EDIT: Bryce, I just saw your response about the sorting. That makes a lot of sense.
This post has been edited by Iram: 29 December 2008 - 05:03 PM