For all of you pro tuners out there. I'm shooting 10.3 grain JSB. In a shot string of 50 shots the 1st shot from the string is 884 then the 2nd goes to 893. Then it continues to decrease slowly to 872. Do I have a tad to much hammer spring tension? My transfer port is set pretty low. Just wondering if I'm thinking right or not.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
N/A Fx Dreamline tuning
- Thread starter Gunner222
- Start date
What speed are you looking to hit? I would start over and put the hammer spring on max, transfer port on med/.177/.22 then start adjusting the small hammer spring adjuster screw up till you max out on speed. Use the reg to get to your target velocity plus 5%. Then back down your hammer spring dial to your desired velocity.
Upvote 0
Start backing off the micro hammer spring adjuster till the velocity starts to drop. You may have too much and just wasting air. What is your reg pressure?
Upvote 0