Inside the Feinwerkbau Model 300s

[zooma]

Hi Mark,

The seal is blue coloured, so this looks like one of the newer types.

After wiping the seal to clean it today it pushed an 8 grain pellet out at 570 feet per second, so we reckon that to be about 5.6 foot pounds.

How does this compare with your prestine restored examples?

I am wondering if there is much to be gained when compared to what I may expect after a complete rebuild.

[Cones]

Hi,

Yes, that sounds good to me. Don't take it apart. I have seen 600 fps but anything over 550 fps is fine.

The most important thing is the shot to shot consistency. So check it over 20 shots and record the readings. Then see what the highest / lowest and biggest shot to shot differences are.

It should be within 20 fps over all the above.

HTH

Mark

[zooma]

Thanks Mark,

I will try a test over 20 shots as you suggest.