QB78 project possibilities

[shawn67]

OK guys i'm new to the darkside, but i'm wanting to get a QB78 and trick it out,  i have 2 tuned geat spingers, so i thought a QB would be a good cheap way to get started in the darkside. I'm wanting a good accurate gun out to 35 yards and  still have enough umpph to take out tree rats at that range and i want it to be quite, will a shrouded barrell cut down on the noise? I know gas guns and pumpers are louder than a good tuned spring gun, i cant afford a compressor or scuba rig right now and after 6 back sugeries a pump doesnt sound fun. Is it possible to get 650 to 700fps out of a .22 QB by tuning it without bulk filling it? I'm basically wanting to tune one, get a good shrouded barrell and a custom stock and scope the gun, I have found the stock i want, can you send me in the right direction for the best tune for a QB and for the shrouded barrel? thanks

[ribbonstone]

Could be as simple as ordering one from Mike (Flying Dragons), or you could do the mods yourself and get it up to that vel. level.  Even 625-650fps is more than enough (in .22) for squirrel hunting out to 40- 50 yards if you've the accuracy to land them right (as a couple of generations of Benjamin and Sheridan shooters will testify).


Do remember, winter is not the best for co2, expect low speeds with cool weather.

[shawn67]

does bulk filling add more power and help with the power in the winter

[ribbonstone]

Does add a bit more power because the gas flows a bit easier ( and the piercing pin isn't using the 12gr. as a stop, so the valve opens a bit farther), but it doesn't do anything about the cold.

[Brutuz]

shawn67 - 12/19/2009  1:27 AM  Is it possible to get 650 to 700fps out of a .22 QB by tuning it without bulk filling it?

No problem if you use the Charlie da Tuna guide:

(used 12.65 grain H&N Hollowpoints)