Fx impact Mk2 .22 500mm STX slug liner A

Jump to latest Follow Reply
900 is plenty for far shots. Once you have muzzle velocity and a starting bc it doesn’t matter the range. Get StrelokPro and a range finder. Also someone posted an article that showed around 900 FPS MV was the best speed for less wind drift. Only two mags on a full tank? Sounds like you are wasting air. Where is your front bumper stop adjusted to?
 
Upvote 0
You have not mentioned what accuracy you have achieved with your slugs. What are you going to be shooting with your slugs, if you can't hit it what good is speed. For pesting and hunting if you have the accuracy with your present tunes then you certainly have the power. Bill
Click to expand...

Just small game squirrels & rabbits And pest birds, going to range soon to see the accuracy 
 
Upvote 0
I recently modified the pellet probe and transfer port as Heavy-Impact as shown in different threads. Before I was 150 reg, hammer spring not maxed but close and was shooting 24 grain slugs at 920. I was getting 3 mags. I do have a 600mm slug liner. After elongating the TP my reg is set to 130 with the same results. Did you start low on your hammer spring and work your way up? If you went straight to max, you could have passed the max MV and started back down the curve. That slows speeds and waste air. Just a thought. 
 
Upvote 0
I recently modified the pellet probe and transfer port as Heavy-Impact as shown in different threads. Before I was 150 reg, hammer spring not maxed but close and was shooting 24 grain slugs at 920. I was getting 3 mags. I do have a 600mm slug liner. After elongating the TP my reg is set to 130 with the same results. Did you start low on your hammer spring and work your way up? If you went straight to max, you could have passed the max MV and started back down the curve. That slows speeds and waste air. Just a thought. 

Going retune it and slowly set the hammer spring and regulator back a few turns and see what happens 

i went from low to high on hammer spring and must of went to high and missed the sweet spot 



Click to expand...
 
Upvote 0
 I went back to retune and found out that my max power and power 5 was shooting about the same power So yes it was wasting air for sure on max setting so I readjust the max power hammer spring to the same length as power 5 and now it’s not wasting Any more air on max setting .. also I turned Down The regulator pressure to 145 and got 90 good shots at 930fps with the 21g slugs . still new to this tuning and thanks guys 
 
Upvote 0
You must log in or register to reply here.
Top Bottom
Back
Home
Forums
Resources
Menu