3000 psi tube QB78

[remtom1200]

I did smooth everything out pretty nice. Think I should make some pretty brass end caps while it is apart. Caught myself reaching for the end of the barrel tonight....hard habit to "break"...lol

[AirGunEric]

I did smooth everything out pretty nice. Think I should make some pretty brass end caps while it is apart. Caught myself reaching for the end of the barrel tonight....hard habit to "break"...lol

I got some real "bling"available- nickel/chrome coated QB barrels and breeches- nice silver look to them. No time to put them online, however.

[remtom1200]

I need to see these Eric!

[remtom1200]

well SeanMP you just had to show me those links, and Eric your being a tease...LOL! I'm sitting here with my QB in parts, just put the valve spring back closer to factory, and undecided on that spacer for the hammer spring. If I remove it will there be lockup, or if I put it in the lathe to take a little off? Maybe I should leave it and lighten my hammer a little? I feel as though I should be wasting less time wondering and making one of those power adjusters, that is a thing of beauty!

[remtom1200]

Im alot of people sometimes but I do have a heat gun. might try that next time. I was out to try this new addition some more and it is not the same qb. This is the best mod I done since adding a lead screw to my little taig lathe, and maybe now I will start doing some serious shooting. There might be one more thing I wanna do to this rifle and that is add a little weight to the other end of the barrel. Instead of adding a muzzle brake to an un banded barrel I have thought of making a new fill cap of brass seeing im on a roll with that precious metal. Anyone have CAD drawings for these caps?Lol

[SeanMP]

Thats great news Remtom.

From personal experience it took a couple thousand rds to really see what the QB barrel was capable of.

I'll be doing the same thing myself as I'm getting a new .177 barrel from Eric today

[remtom1200]

Yes that cap is brass and cherry wood. I took some careful measurements of the one that comes with the tube, tightened up some of the shoulders for a nice snug fit then grooved for an oring as the original is. Did I mention I like brass?LOL!

[remtom1200]

thanks Al, seems I didnt turn the knob to the proper diameter for a good knurl so I stopped before it was too deep. I will measure twice this time..lol. Right now I am thinking of a way to secure the end caps without drilling a hole down through the breech. Oh this kind of stuff makes my work day go much faster Work seems to be slowing my progress at home...ha ha

[SeanMP]

It needs to be steel because of the negative tolerances. You can dress it up to look like a muzzle brake and the air stripper on the end can be brass.

Spending some time playing with barrel weights to see what gives you the best groups would give you an idea of how much material you need to accomplish both tasks.