Well, I went to the range yesterday, and here are the targets and results. I was going to shoot 25 of each pellet, but when I got to the Hyper Max pellets, they were shooting such tight groups that I had to shoot a lot more of them in order to see the true range of variability. (I ended up shooting 40 Hyper Max pellets.) I think you can see by these pictures that the Hyper Max is the true champion when it comes to accuracy; 58% of the Hyper Max pellets went through the same, quarter-sized hole. Only 40% of the Crosman pellets hit the same mark. Both targets were shot standing, at a distance of 7 yards (21 feet) with open sights, using a police-style, 2-handed grip.
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| 25 shots with Crosman SSP 4.0 grain pellets @ 7 yards, police-style 2-handed stance. |
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| About 10 of the 25 shots hit this quarter-sized area. |
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The red area is 3 inches in diameter.
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| 40 shots with RWS Hyper Max 5.2 grain pellets @ 7 yards, police-style 2-handed stance. |
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Again, the red area is 3 inches in diameter.
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| About 23 of the 40 shots went through this quarter-sized hole. |
I also chronographed these two pellet types. Here are the results. The first Hyper Max result was due to dieseling, I believe. I cleaned the barrel with an alcohol swab, then put a drop of silicone lubricant on the breech seal just before shooting the chronograph test.
Hyper Max 5.2 Grain: 718, 683, 663, 650, 639, 658, 644, 659, 656, 649
Average: 661.9 (662 fps)
Taking off the first 2 results: Average: 652.25 (652 fps)
Foot Pounds of Energy (FPE): 4.91 [Let's round this up to 5.0, since our last result was 5.17]
Crosman SSP 4.0 Grain: 787, 792, 789, 784, 782, 775, 785, 785, 785, 786
Average: 785 fps
Foot Pounds of Energy (FPE): 5.47 [Let's round this up to 5.5, just to be fair to the Crosman pellet.]
As you can see, while Hyper Max gives superior accuracy, the Crosman SSPs deliver more velocity and power.
785 vs. 652 = Over 130 fps faster!
5.5 vs. 5.0 = 10% more energy delivered.
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EDITORIAL NOTE: (This comment was added 03-19-2014, more than 2 years after the original post, by an older and wiser Scientific Airgunner!) The super-light-weight pellets (less than 5 grains in weight) should not be used, because they put additional and unwanted stress on the gun's mainspring; thus, despite the fact that SSPs deliver slightly more velocity and power, Hyper Max pellets are a better choice, because they aren't hard on your gun. 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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EDITORIAL NOTE: (This comment was added 03-19-2014, more than 2 years after the original post, by an older and wiser Scientific Airgunner!) The super-light-weight pellets (less than 5 grains in weight) should not be used, because they put additional and unwanted stress on the gun's mainspring; thus, despite the fact that SSPs deliver slightly more velocity and power, Hyper Max pellets are a better choice, because they aren't hard on your gun. 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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You may have noticed the "flyer" at the bottom of the Hyper Max target, this is not an error of the gun, it is human error. I was at the gun range on a very busy day, and there were large caliber pistols going off all around me, and at times, that made it hard to concentrate. That particular shot came after a cease-fire had ended, and I kind of jumped when all the shooting commenced again.
Well folks, that's all for now. I hope to make the next post about my new Crosman Titan GP rifle. I have toyed around with it a little, but I haven't taken it to the range for any serious target work (yet!)
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