Got my BAR10 out for some shooting today and it was all over the place... Little disappointed since it was pretty on when I put it away last.
Anyway, I hate my hopup. Currently it's the PDI V2 chamber with a W-hold bucking. I'm guessing it's not enough or can't handle what my gun is pushing out.
Anyone have any suggestions for a good, consistent hop up platform? I feel like mine is holding me back. Keep in mind that my rifle is very built, running .40's (which also need to go I have nothing else to say)
Check your airseal at the barrel. Make sure there are no BBs loaded and cock the gun, firmly hold your finger over the end of the inner barrel and pull the trigger. If your airseal is good then the piston should hang at least a little bit. Most likely the air will just escape around the bucking lips and the piston will just slam forward. Repeat the test with just the cylinder head. You should always get 100% compression so that the piston hangs for as long as you hold your finger over the nozzle. If it isn't perfect then replace the o ring or stretch it until it is perfect.
Next the bucking needs to be sealed. The original vsr design is nice because you can install anti blow by rings that will give you 100% compression at the muzzle. IIRC you can make them with .40 shell casings. The only real advantage of the pdi IMO is that it might allow for a longer hop up patch such as an er hop whereas the vsr style is limited in that regard. I'd say just use the standard vsr chamber with your choice of bucking, an r hop, and abb rings. That + nice BBs and a quality barrel should get you really nice accuracy with insane range.