Quote:
Originally Posted by Buckhead
In my mind to meet the parameters of the original post you would have to take the energy at 350 yards and divide that by the average powder charge to determine the efficiency of payload delivery. Here are the results of some common cartridges and bullet weights.
30-06, 180 gr, - 30.3 ft/lbs per grain of powder
300 WM, 200 gr, - 32.0 ft/lbs per grain of powder
338-06, 210 gr, - 34.0 ft/lbs per grain of powder
338 WM, 210 gr, - 29.6 ft/lbs per grain of powder
35 Whelen, 225 grain - 36.8 ft/lbs per grain of powder
375 H&H, 260 grain - 31.8 ft/lbs per grain of powder
It appears that the 338-06 and 35 Whelen are quite efficient at delivering a heavy payload with the least amount of powder.
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I totally agree this is a simple way to compare everyone's favorites. I think the .338 federal will have one of the best numbers when doing it like this. It may be lacking a bit at 350 yards but it will put the hammer down to stop that charging grizzly everyone is worried about up close.
Anyone want to do the above calculations at muzzle velocity.
200gr Federal Trophy Copper? Factory Load
.338 federal 62.5 ft lbs per grain at the muzzle
(2600 fps and 3000 ft lbs with ~48grs of powder)
36.5 ft lbs per grain at 350 yrds with a 200 gr factory load.
(1950 fps and ~1700 ft lbs)
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