The Firing Line Forums - View Single Post - How accurate are ammo manufacturer's claimed MV numbers?

Pistoler0 · September 17, 2021, 02:35 PM

I don't have access to a chronometer, and I am trying to develop DOPE for my 308 bolt action. I have about 500 rds of SMK loaded ammo (Bullets 1st) which is accurate and affordable. They quoted velocity out of an 18" AR-10 barrel which is difficult to extrapolate to my 26" bolt action barrel.

I am also trying to devise a drop chart for an AR-47 that I mostly feed with Tula.

In your experience, how accurate are ammo manufacturer's claimed MV numbers?

I suppose this vary by manufacturer, and in that case I would appreciate your experience with the factory ammo that you are familiar with.

September 17, 2021, 02:35 PM	#1
Pistoler0 Senior Member Join Date: November 15, 2019 Location: Conifer, CO Posts: 632	How accurate are ammo manufacturer's claimed MV numbers? I don't have access to a chronometer, and I am trying to develop DOPE for my 308 bolt action. I have about 500 rds of SMK loaded ammo (Bullets 1st) which is accurate and affordable. They quoted velocity out of an 18" AR-10 barrel which is difficult to extrapolate to my 26" bolt action barrel. I am also trying to devise a drop chart for an AR-47 that I mostly feed with Tula. In your experience, how accurate are ammo manufacturer's claimed MV numbers? I suppose this vary by manufacturer, and in that case I would appreciate your experience with the factory ammo that you are familiar with. __________________ Life is simply an inter-temporal problem of constrained optimization.