Hi folks, Well, I bought an HW40 second hand (although looks new) from a forum member the other day, and thought i'd post up some Chrony results...

I used an F1 Chrony.

Pellets used were .177 Weihrauch FT Special pellets, weighed at an average of 8.9 grains.

Shot results as follows:

1. 351
2. 353
3. 352
4. 352
5. 351
6. 354
7. 350
8. 354
9. 348
10 351

So, an average fps of 351.5 fps, which calculates at 2.44ft lbs or 3.31 Joules.

May well try other pellets, but I don't have any and the Weihrauch pellets seem pretty consistent, and were accurate enough in my garage test yesterday