Comments on: 6.5 Creedmoor — Velocity and Barrel Length — What to Expect

By: Rifleshooter.com

Rifleshooter.com — Sun, 18 Feb 2018 02:03:08 +0000

The temperature was cold, but controlled. As for barrel speed the little bit of testing we did indicated it wouldn’t have much effect on the results. https://rifleshooter.com/2017/07/a-look-at-how-rifle-barrels-speed-up-measuring-the-increase-in-muzzle-velocity-in-new-barrels/

By: Niles Coyote

Niles Coyote — Tue, 03 Jan 2017 01:18:59 +0000

I have an issue with that too. I wonder if the barrel was new and therefore hadn’t worn in rough to stabilize its velocity prior to testing. Every after market barrel I’ve used continued to gain speed during its first one or two hundred rounds… Add to that, my shortest creedmoor barrel (@22″ and on a AR) is faster than all barrel lengths while using less h4350 than the tested load.

By: MikeC

MikeC — Mon, 02 Jan 2017 14:16:00 +0000

Hard to draw credible conclusions from this test. 23degF, which is horrible for this kind of testing, apparently skewed results so much as to top out 142gr MV at ~2660. I doubt it. The velocities actually went DOWN with common longer barrel lengths for this cal? They had no answer for that..