Tuning Velocity Anomalies
- PCP Airguns
- 10 Replies
Trying to perfect a tune.
I've been pesting every week heavily and accuracy is outstanding. I've said it in other posts and I'll say it again for the sake of relevance to post.
Shooting a Dreamline Tac 25/600 w 290cc Tube. I'm currently set at 108bar on the reg, 17 on the wheel, about 1.75 turns on the HST internal screw. Getting 857-863 with an EXTREME spread of 12. But mainly between 855-862. I notice when I rechrono to confirm same tune my first shot Will be slightly low (847-850) then back to.the sweet spot for the rest of the mag. Then I'll get a few 837-841-829- then back to 860 for a few. I know if velocity drops after first shots it's too little HST but.. its so consistent and always goes back to the sweet spot. Does anyone have any ideas?
I'm getting Altoids/Dimes at 50- quarters at 100. I'm using the same exact pellets... I'm an over perfectionist and hand weigh the pellets to the .001, inspect all skirts, and place the best 100 out of every can skirt down in empty FX Hybrid Slug blocks to protect them. It's not weight variance or gas bypass from deformed pellets.
I've been pesting every week heavily and accuracy is outstanding. I've said it in other posts and I'll say it again for the sake of relevance to post.
Shooting a Dreamline Tac 25/600 w 290cc Tube. I'm currently set at 108bar on the reg, 17 on the wheel, about 1.75 turns on the HST internal screw. Getting 857-863 with an EXTREME spread of 12. But mainly between 855-862. I notice when I rechrono to confirm same tune my first shot Will be slightly low (847-850) then back to.the sweet spot for the rest of the mag. Then I'll get a few 837-841-829- then back to 860 for a few. I know if velocity drops after first shots it's too little HST but.. its so consistent and always goes back to the sweet spot. Does anyone have any ideas?
I'm getting Altoids/Dimes at 50- quarters at 100. I'm using the same exact pellets... I'm an over perfectionist and hand weigh the pellets to the .001, inspect all skirts, and place the best 100 out of every can skirt down in empty FX Hybrid Slug blocks to protect them. It's not weight variance or gas bypass from deformed pellets.