I am almost 100% positiv ethat it is 360 Nitro Express. I just rec'd my copy of cartridges of the world and checked all the measurements.I could not uinderstand why the 360 Nitro cartridges from Buffalo Arms didn't chamber - I thought they were too long. Turns out that they were NOT too long. They just needed sizing. The virgin brass was .421 wide at the base. It would not fully chamber. Resized to .4205 the 2 1/4 inch cases work just fine!
"Delight yourself in the Lord and He will give you the desires of your heart." Psalm 37, verse 4.
"The lazy do not roast any game, but the diligent feed on the riches of the hunt." Proverbs 12:27
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