Comments on: How Ammo Temp Affects Pressure, Velocity, and Point of Impact https://bulletin.accurateshooter.com/2018/07/how-ammo-temp-affects-pressure-velocity-and-point-of-impact/ from AccurateShooter.com Tue, 04 Aug 2026 19:03:57 +0000 hourly 1 https://wordpress.org/?v=4.1.26 By: MH https://bulletin.accurateshooter.com/2018/07/how-ammo-temp-affects-pressure-velocity-and-point-of-impact/comment-page-1/#comment-55577 Tue, 17 Jul 2018 14:16:00 +0000 http://bulletin.accurateshooter.com/?p=59850#comment-55577 The change in velocity may not be entirely caused by the brand of powder or powder stability as other unavoidable factors do exist including thermal expansion and temperature differential from ambient.

What’s interesting here is the point of impact shift is most likely related to barrel oscillation and harmonics.

I would bet that a test of three powder charges to replicate the same 3 velocities at the same temperature would reveal identical point of impact shifts.

]]> By: Guy4064 https://bulletin.accurateshooter.com/2018/07/how-ammo-temp-affects-pressure-velocity-and-point-of-impact/comment-page-1/#comment-53056 Tue, 04 Jul 2017 16:51:05 +0000 http://bulletin.accurateshooter.com/?p=59850#comment-53056 Id venture a guess the powder is 748.

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