Barrel length vs velocity cut down test

[Alan Waters]

http://bulletin.accurateshooter.com/2015/06/308-win-barrel-cut-down-test-velocity-vs-barrel-length/

[Robocop1051]

McMillan did this test all the way down to 10”. This is why there are 12.5” bolt actions coming out on the market. McMillan started it and now Big Green has their new M700 pistol coming out with a 12.5” barrel. 

[Alan Waters]

Robocop posted this in 2014. Worth seeing again.