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| Data for Diana P5 Magnum |
The other day, it occurred to me that it would be a good idea to have the data that I posted on other websites posted here as well, in case the other websites happen to either go away, change web hosts, or lose their data to an unexpected crash. So here it is, complete with bar chart. Each pellet (listed by brand and weight) was chronographed ten times, and then the average of those results was used to calculate FPE (Foot Pounds of Energy.)
Cabela's Ultra Mag (10.56 Grain) = 417, 410, 394, 408, 402, 416, 414, 418, 411, 421
(avg = 411.1) @ 411 fps = 4.11 FPE
Gamo Rocket (9.6 Grain) = 451, 450, 451, 457, 453, 454, 440, 434, 472, 445
(avg = 450.7) @ 450 fps = 4.32 FPE
RWS Meisterkugeln Pro Line (8.2 Grain) = 504, 504, 510, 505, 498, 512, 516, 510, 512, 499
(avg = 507) @ 507 fps = 4.68 FPE
Gamo Tomahawk (7.8 Grain) = 531, 506, 526, 533, 525, 509, 503, 537, 527, 524
(avg = 522.1) @ 522 fps = 4.72 FPE
RWS Hypermax (5.2 Grain) = 671, 667, 664, 673, 669, 668, 663, 670, 675, 675
(avg = 669.5) @ 669 fps = 5.17 FPE
I find it interesting that the FPE was greatest in the lighter pellets. It would seem that although mass plays a large factor in the hitting power of a projectile, velocity can have a pronounced effect as well.
EDITORIAL NOTE: (This comment was added 03-20-2014, more than 2 years after the original post, by an older and wiser Scientific Airgunner!) The Hyper Max pellets WILL get you close to the 700 FPS that is promised on the box, and they weigh JUST ENOUGH that they aren't hard on your gun. (Pellets that weigh 4.9 grains or less will place additional stress and "wear & tear" on your spring; pellets that weigh 5.0 grains or more won't. That's why RWS makes their "light pellet" heavier than most other manufacturers.) However, I wouldn't shoot anything under 7 grains nowadays, because retained energy at the point of impact suffers greatly in lighter pellets. Look at the following post for details:
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I find it interesting that the FPE was greatest in the lighter pellets. It would seem that although mass plays a large factor in the hitting power of a projectile, velocity can have a pronounced effect as well.
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EDITORIAL NOTE: (This comment was added 03-20-2014, more than 2 years after the original post, by an older and wiser Scientific Airgunner!) The Hyper Max pellets WILL get you close to the 700 FPS that is promised on the box, and they weigh JUST ENOUGH that they aren't hard on your gun. (Pellets that weigh 4.9 grains or less will place additional stress and "wear & tear" on your spring; pellets that weigh 5.0 grains or more won't. That's why RWS makes their "light pellet" heavier than most other manufacturers.) However, I wouldn't shoot anything under 7 grains nowadays, because retained energy at the point of impact suffers greatly in lighter pellets. Look at the following post for details:
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