VK 35gr slugs (22 Cal) good for FX slug liner - VIDEO from the range - scopecam

[Bob_O]

Impact MKII, 700mm, 938fps, 200yds

https://youtu.be/RL4lM6j22ag

 

[Endeavor]

Color me amazed and envious. This may have been posted before but BobO would you let us know to what extent you have upgraded your Impact to achieve the stated velocities the 35gr VKS.



Thanks

 

[Bob_O]

I don't know the exact specs....but it's an ImpactX upgraded to MKII by Ernest Rowe.

 

[heavy-impact]

Extra mods done on Bob’s impact;

1: front of valve housing was milled larger

2: 6.50 VS

3. Rod spring moved 3” away from rod delrin seals 

4: rear block gauge connect through hole was milled larger for the external plenum tube for faster flow to feed the valve. 

5: double transfer port on barrel and pellet probe.

Source

 

[Bob_O]

Thanks James!!

 

[OscarDawg]

Extra mods done on Bob’s impact;

1: front of valve housing was milled larger

2: 6.50 VS

3. Rod spring moved 3” away from rod delrin seals 

4: rear block gauge connect through hole was milled larger for the external plenum tube for faster flow to feed the valve. 

5: double transfer port on barrel and pellet probe.

Source

Can you give an explanation of mod#3 ? 

 

[heavy-impact]

Can you give an explanation of mod#3 ?

I don't know exactly why Mr Rowe does that. Maybe he will chime in.

 

[Bob_O]

It's for smoother flow of air toward the valve.

 

[Bob_O]

Added a video to the original post.