Airgun Universe Forums - View Single Post - Air rifle tuning and fitting a mainspring

vulcan 1 · 6th Oct 2008, 23:37

transfer port opening needs a gunsmith, and it could take the the gun past its limit of 12lbs if not done correctly,it is only a minute tweak,but can boost power .

6th Oct 2008, 23:37	#9 (permalink)
vulcan 1 Junior Member Join Date: 20th Jul 2008 Location: lancashire Posts: 4 Images: 21	Re: Air rifle tuning and fitting a mainspring transfer port opening needs a gunsmith, and it could take the the gun past its limit of 12lbs if not done correctly,it is only a minute tweak,but can boost power .