her står det skrevet mye:) http://www.varmintal.com/17hmr.htm
Bullberry Barrel Length vs. Velocity DATA
22 inch = 2517 fps, 103 fps spread
21 inch = 2523 fps, 66 fps spread
20 inch = 2515 fps, 86 fps spread
19 inch = 2538 fps, 83 fps spread
18 inch = 2522 fps, 41 fps spread
17 inch = 2505 fps, 43 fps spread
16 inch = 2492 fps, 53 fps spread
15 inch = 2477 fps, 27 fps spread
14 inch = 2432 fps, 70 fps spread
13 inch = 2419 fps, 32 fps spread
12 inch = 2387 fps, 57 fps spread
11 inch = 2338 fps, 45 fps spread
10 inch = 2276 fps, 45 fps spread