Originally Posted by
rsilvers
This is typically how these things go - someone says "The such and such wildcat is XXX fps faster than the 300 BLK." What they don't tell you is that they are comparing factory 300 BLK ammo loaded to 55,000 psi and a 2.245 OAL with hot-loaded ammo at 65,000 psi and 2.3 OAL.
For example, loaded to equal pressure, 7.62x40mm is not the 200 fps faster than the 300 BLK as been claimed, but more like 85 fps faster.
30 HRT - I am not exactly sure, but a quick QuickLoad simulation is looking like 150 fps faster than 300 BLK if both are loaded to 55,000 psi.
That being said, I like the idea of the 30 HRT except it would require special magazines, and the brass should be made shorter to be more optimal for the Barnes 130 grain and the Nosler 125 grain bullet. So, if someone does a 30 SPC or 6.8-30, I hope they make this change.
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