Playing around with the regulator in my Caiman X, Ive went from @ 903fps with NSA 17.5gr slugs & 1” groups at 22yrds to 1045fps this 10 shot group at 22yrds. Time to stretch it out now to see what is does. 
Time to Stretch it out
- Thread starter bowdude
- Start date
Nice to see a slug tune shrink to a fantastic group! I shoot the same 17.5 thru my RAW, great light slugs....affordable too!
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I may have an issue I have to figure out. Tried to shoot 48yrds today & the 1st 3 shots were all over the place. The gun had a lazy sound to it. After the 3rd shot the had the normal real clean crisp shot sound & the group was around 3/4”. But the 1st 3 were horrible, I’ve got to figure out what’s going on there.
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If you upped the reg pressure without upping HS tension then there might not be enough force to open the valve fully, meaning slower shots (lower POI) in the beginning or it could be reg creep.
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I upped the reg pressure then shot over the chrony & adjust hammer spring till a rise velocity stopped this back off. Shot a couple of mags to see where the spread was & made fine adjustments to be the spread within about 3 fps over 10 shots.
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Well, you tuned it to perfection so...then after you shoot it it settles again or maybe the reg is still settling in. Don't know what else it could be if after 3 shots it's back to the same POI.
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