But bullet like projectiles require or presuppose somewhat faster twist rates. And, longer the bullet, faster the twist rate needed.

So, all and everything depends on what one wants to shoot.

On another note:
Honestly though, the 257 and 308’s are really my preferred direction for airguns (love 45’s too….BUT?). Its a personal thing. I like the thought of higher velocities and higher BC’s. I will say this TODAy just in case it becomes popular down the line, i would love a 264 cal…Read more

Those quality firearm barrelsa are not that different to airgunbarrels. Shallow-landed, large-grooved and mirror-polished barrels should shoot fine no matter what sort of gas or gasses are used as propelling…Read more

Gun is finally working fine.

Top hat is set quite low… but gun is still pretty stout.

Thanks for help, everybody.

I have mold for this bullet (in size .219 inches) made by NEI handtools. Those two driving bands are in metric 5,52mm and 5,57mm. Mold is made very well.

That bullt seem to work (it’s accurate), though I have a little problem right currently, because my gun dumps its reservoir with one shot.

But polishing helped to me see that the brass screw that holds valve on its place probably somehow locks the valve open. There are some marks, scratches on polished valve stem, and these scatches tell that valve gets somehow violently jammed or stucked…Read more

Maybe it’s the brass part in the bottle (which is in contact with valve stem). I mean, maybe it’s the brass which is left too rough or it not round… but I hope polishing the valve stem could fix the problem.

I have new 39 grain .22 mold (from NEI hand tools), and I sure as hell want to test…Read more

I think I have one spring left out even now, but it’s not the one which is responsible keeping the gun cocked (not misfiring it)

But your gun was like that before any mods, so I would suggest like others here that you’d…Read more

Also, what sort of bullet that 87grainer is? Flat point…?

Like this http://www.hunters-supply.com/shop/popup_image.php?pID=1034&osCsid=97dd3ef5589240a51eb5e9a34912d9bc

Lathe would be the best, but I believe that the job could be done even with simple electric drill (and with careful attention… not scratching the pin when the valve is attached to the drill and when ground).

Valve should be attached firmly…Read more

back to the business thing… Pab

Was that valve sold as BLODNOB valve?

Or was it sold as some valve somehow similar to blod?

Well, do you know CASELMAN? It is quite powerfull airgun with large reservoir. “Delivers .32 ACP power” 😀 😀 😀 😀 😀