I promise that this topic line is not going to go on forever. Right now, I am am having too much fun and still have too many questions. This week, I am comparing results from Crossman Optimus and the Crossman 1000 using the 7.54grain Hunter pellet. To date, all of my work has been with the Optimus because it is just a better tool. The 10 pump BB/pellet rifle (1000) is a pain in the butt to shoot multiple times.
That being said, I am going to do a pump/velocity test in the future. I want to know if it is really worth pumping 10 times or not because it 5 pumps is almost the same, then I will be more willing to shoot it more consistently. I already know that the point of impact changes with less pumps. This implies a velocity change, but I want to know definitively.
For the record, the Optimus is on the left and the 1000 is on the right of this picture. I wanted to compare as closely as possible so I used the same pellet and the 1000 was pumped to the maximum 10 pumps. The data is below.
| Muzzle – Optimus | 30′ – Optimus | Muzzle – 1000 | 30′ – 1000 |
| 942 | 849 | 752 | 726 |
| 946 | 853 | 740 | 708 |
| 966 | 866 | 749 | 719 |
| 959 | 859 | 748 | 700 |
| 953 | 855 | 743 | 699 |
| 952 | 870 | 743 | 703 |
| 973 | 852 | 752 | 729 |
| 947 | 853 | 755 | 700 |
| 951 | 868 | 736 | 724 |
| 966 | 858 | 737 | 729 |
| 964.6 +/- 19.5 | 857.3 +/- 30 | 745.5 +/- 20 | 713.7 +/- 35.6 |
The Optimus data is the same data from a couple weeks ago. The 1000 data is all new. I suppose the thing that struck me was that there was not much velocity change over 30 feet. So, I did some comparative analysis below. I think that it all makes sense from what I expected.
| % Difference | |
| Optimus muzzle vs 30′ | 10.8% |
| 1000 muzzle vs 30′ | 4.4% |
| Optimus vs 1000 Muzzle | 25.9% |
| Optimus vs 1000 30′ | 18.3% |
For fun, I checked a couple other things. What happens if it is over pumped? With 12 pumps at 30′ I got 727, 651 and 771 fps. It looks like the data is all over the place and I didn’t do enough for proper statistical analysis. Maybe there is an overpressure valve? I don’t know and I am not really going to pursue more, I was curious what happened.
Finally, I changed pellets from the Hunter to the Magnum Energy @ 30′ 712, 711, 726 fps. I think those results were the same that I observed in the Optimus. So, that data seems to make sense.
End Your Programming Routine: The truth be told was that I purchased the Optimus because the 1000 was such a pain to shoot repeatedly. All that being said, the Hunter pellet out of the 1000 is potent enough to dispatch cat sized vermin at eight pumps in one shot. My biggest fear was needing a follow-up shot to finish the job and spending 30 seconds reloading. Let us see where the data leads.
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