I've often heard that longer control bores of around 8 inches are better than the shorter ones of the past, so I thought I'd do a simple test in the back yard. I aired up the S6 and started with the stock 14 inch barrel that has a 1 inch sizer at 0.684 and shot 20 balls over the chronograph. I then repeated that with all things being the same except now using a 14 inch Stella barrel with a 0.685 back that has an 8 inch control bore. Here are the results:
CCM Barrel (0.684, 1in bore length)
Average Velocity: 277.3 fps
Standard Deviation: 5.32 fps
Low and High Readings: 269, 287 fps
Stella Barrel (0.685, 8in bore length)
Average Velocity: 293.3 fps
Standard Deviation: 3.96 fps
Low and High Readings: 287, 300 fps
So that's a difference of 16 fps for free which will increase air efficiency and the more consistent velocities will increase accuracy at range. I know it seems obvious, but it's neat to see that this stuff isn't just marketing and that there is a measurable difference that is significantly larger than the statistical variations. I'd be curious to hear about other people's experiences or tests.
CCM Barrel (0.684, 1in bore length)
Average Velocity: 277.3 fps
Standard Deviation: 5.32 fps
Low and High Readings: 269, 287 fps
Stella Barrel (0.685, 8in bore length)
Average Velocity: 293.3 fps
Standard Deviation: 3.96 fps
Low and High Readings: 287, 300 fps
So that's a difference of 16 fps for free which will increase air efficiency and the more consistent velocities will increase accuracy at range. I know it seems obvious, but it's neat to see that this stuff isn't just marketing and that there is a measurable difference that is significantly larger than the statistical variations. I'd be curious to hear about other people's experiences or tests.
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