Originally Posted by cmdrsuds
How would you configure the springs and your reg for the smoothest shot possible? Are kits recommended for high end cockers like Karni's or are those dialed in pretty well already..
1) lightest mainspring with hardest valve spring that will allow ~300 fps without turning the IVG more than a couple of turns in. That will lower your LPR as low as it'll go, making the cocking action softer.
2) spring kits are recommended for the serious tinkerer/pump player or very inefficient markers (forced LP, like the later SystemX 'cockers). Karni's are already pretty well dialed in, but with the proper spring kits (belasales or any kit with a yellow strength mainspring), they can only get better (IF YOU KNOW WHAT YOU'RE DOING). You can tune for smoothness & efficiency, strike a balance in between or go nuts on LP/HP operation for quiet/straight CO2 E-sniper configurations (never understood the appeal of E-snipers). Re-springing a karni can be a pain with the ICS though.
Basically, the desired effect dictates what springs you'll be using.