A (quiet) day at the range ...

In the cow pasture documenting a problem with the new can on a (UMAREX) "Walther" PPK/s .22 ...

1. Photo of the AR-7 - the gun the can woks well on -

https://www.s1lentdrum.online/TECEVAL/ar7.jpeg

2. Video of firing the AR-7 without, then with the Sparrow -

https://www.s1lentdrum.online/TECEVAL/ar7.mov

3. Detail of bull shot without - 

https://www.s1lentdrum.online/TECEVAL/ar7without.jpeg

4. Detail of bull shot with - 

https://www.s1lentdrum.online/TECEVAL/ar7with.jpeg

5. Photo of PPK/s - 

https://www.s1lentdrum.online/TECEVAL/ppks.jpeg

6. Video of firing the PPK/s without, then with the Sparrow -

https://www.s1lentdrum.online/TECEVAL/ppks.mov

7. Detail of bull shot without - 

https://www.s1lentdrum.online/TECEVAL/ppkswithout.jpeg

Note - observed1st round strike high, adjusted aim point below bull 

8. Detail of bull shot with -

https://www.s1lentdrum.online/TECEVAL/ppkswith.jpeg

9. Closer detail of group shot with showing partial and full keyhole -

https://www.s1lentdrum.online/TECEVAL/detailkeyhole.jpeg

Note - used same low, centered point of aim as earlier. Also, note one full keyhole - AT 7 yards!

(uppermost left) and partial (one up from bottom).

10. Detail of muzzle end cap showing no burrs or deformation - 

https://www.s1lentdrum.online/TECEVAL/noburrs.jpeg

The Sparrow performs well on the AR-7 and shows no deformation from off axis bullet strike. The Sparrow substantially changes the point of impact on the PPK/s and the keyholing rounds make for a useless gun accuracy wise.

It’s a nice, quiet can, BUT I look forward to resolving this problem.