Dave,

The brass was necked up Weatherby, 460 Weatherby magnum brass. It was recycled from my 460 Weatherby magnum. I built the 500 after I had sold the 460 WM MkV. I have always assumed this stuff was Norma brass.

The brass was a little short. It's overall length was around 2.85".

Scott

Though some may find this interesting. The data was compiled from a rebarreled Ruger No1. The barrel length was 27" with an additional 1.5" of muzzle brake.



Brass had a volume of ~ 142 gr of water.



Bullets were Barnes 600 gr monolithic solids



Primers - Fed 215



Data is several years old, but I will try and answer any questions. This data represents the maximum load this particular rifle would shoot without sticky extraction and/or blown primers.



Corrected chronograph velocities (chrony was 12' from muzzle)

2311

2266

2298

2258

2284

2271

2305

2296

2280

2288



Average velocity of 10 shot string - 2286 fps

Extreme spread of 10 shot string - 53 fps

Standard Deviation of 10 shop string - 17.3 fps

Group size (5 shots only) 3".



This was NOT the most accurate load, but it was the MAXIMUM load in this rifle. The best load was a consistent 2" grouper, but only had an average muzzle velocity of 2087 fps with this bullet.



Scott

Hi Scott,
That data is old enough and low enough to show signs of A-Square brass. Any other brass and a 27 inch barrel would show velocities well over 2400 fps. Is that the case. Pun intended.
Dave