Tuning How much power from a .30 RAW HM1000x?

[dgeesaman]

My RAW HM1000x is tuned for accuracy at 70fpe for 44.75 pellets.

I tested some slugs and the velocity was understandably low, maybe too low for a valid test of slugs.

If I use the external hammer spring adjustment, can I generate more power? Don’t care about wasting air for this test. Any idea of how many turns is reasonable would be helpful.

Also if I mark the adjuster location and put it back where it was, will I get back to my original tune?

Thanks,

David

 

[Motorhead]

On a stock rifle @ 77-80 fpe is all they can muster has been my findings.

 

[igolfat8]

With my HS bottomed out I can get 860 with 51s and about 900 with 44s.