My new Daystate Alpha Wolf Safari arrived today. After initial setup, sighting in, I wanted to compare the results from the built in chronograph vs. my LabRadar.
Very different results in muzzle velocity, but the math works out that the extreme spread and standard deviations are within 1 fps of each other so the rifle is consistent.
What is puzzling is the average difference of 12.45 fps between the two measurements. So which one do I trust? Any ideas on what is causing the difference. I have my Lab radar just in front of the muzzle. Very close.
Here are the results from one mag of .22 JSB 25.39gr Redesigns. Note. This is out of the box. I have not adjusted anything on the rifle.
Very different results in muzzle velocity, but the math works out that the extreme spread and standard deviations are within 1 fps of each other so the rifle is consistent.
What is puzzling is the average difference of 12.45 fps between the two measurements. So which one do I trust? Any ideas on what is causing the difference. I have my Lab radar just in front of the muzzle. Very close.
Here are the results from one mag of .22 JSB 25.39gr Redesigns. Note. This is out of the box. I have not adjusted anything on the rifle.
Shots | Labradar | Alpha Wolf | Diff |
1 | 951 | 938 | 13 |
2 | 950 | 938 | 12 |
3 | 956 | 945 | 11 |
4 | 954 | 942 | 12 |
5 | 955 | 942 | 13 |
6 | 959 | 947 | 12 |
7 | 954 | 944 | 10 |
8 | 956 | 939 | 17 |
9 | 960 | 947 | 13 |
10 | 955 | 944 | 11 |
11 | 958 | 945 | 13 |
AVG | 955.27 | 942.82 | 12.45 |
EXT SPR | 10 | 9 | |
STD DEV | 3.07 | 3.31 | |
JBM B.C. *Only from Labradar shots | 0.041 |