I just installed a .30 cal barrel on my Impact M4. It's the 600mm length and I'm just wondering what speed I should be targeting for pellets and slugs? I'm shooting the 44.75 grain JSB pellets and the 44.5 grain FX Hybrid Slugs. Right now I have the regulator set on 110 BAR, the macro wheel on 14 and the micro wheel on 4. It's shooting the pellets at an average of 823 FPS and the slugs at 800 FPS. Both are grouping very well at 37 yards. Just curious if I'm already within the target range or do I need to increase or decrease velocity to improve accuracy? Thanks.