Originally Posted by MontanaRifleman
JE, I agree with everything except that most factory test barrels are 26". When talking to guys from Nosler, Barnes and Hodgdon, they told me most of their barrels were 24" and barnes list the barrel length.
As far as the ammon manufacturers, you might be right there, but I have found their (Fed, Rem and Win) velocites to be fairly close in my 7mm RM and 300 WS. I was getting some velocities 30-40 fps higher than published. Maybe it's my chronor?
That's what I was talking about ( Ammo manufacturers ) when I said 26'' barrels.
Fortunately most of the powder and bullet manufacturers list barrel length with
there load data.
Unfortunately speed sells and the ammo guys will use the highest velocity and energy
numbers they can and the test are designed to do just that.
A lot of the pressure guns (Test Guns ) have barrels that are 28 to 30'' long.
It's Kind of like gas mileage the manufacturers of the car will give you the best numbers
possible but you will be hard pressed to match them under normal driving.
J E CUSTOM