I'm sticking to pellets, if you want 22 rimfire performance, it's cheaper to just get a case of stingers, pay for a tax stamp and get a supressor. my 2 cents. Slug guns get way costly, their finicky, and usually on the brink of broke down or already there.
As of yet, yes. The precision capability of the fx gear would be awesome once the 40 grain system is buttoned down. My match 22lr was very very close but it took just as much effort to get there. Not being a firearm has some advantages legally as well.
I answered my own question yesterday, yes the high power sping was a mis step. Staying under the manual listed max pressure, i ran out of barrel i think with the 700m.
Superior heavy is 1/18 twist. And yah your right on the money. You can just look at a bullet stability calculator to see what your barrel will most likely stabilize well. A lot of airgunners are kind of stuck on speed. Turns out barrel twist matters a whole loy more.
Huma regs, barrel tensioner whether home made shroud spacer or carbon tube and the carbon liner stiffner and harmonic tuners helped rectify those issuee in my circle of friends. A similar effect was noticed when moving to higher pressures to control valve open dwell more consistently. Ironically the 2 high power setups are running 165 bar. (500mm 25 maverick shooting 34s, and a 700 mm m3 impact 22 shooting 34s. Both at +/- 990 fps)
I will have to see about getting a pic of my buddies notes. Im curious what the issue is generally. Fliers or deviation? Hes got A mav but got the 500mm to do it and velocity spread is sooo low. I make air gun parts for us and it took a fiew custom hammer weights and barrel tensioners, probe mods and seating depth changes. The harmonic tuner really paid off for this tho. Seeing as you and i both have impacts it may help. Ditching the fx amp regs and upping your pressure and finding the fine line of over-hammering it may be a trick. I found mine doesnt like violent hammer strikes with the 14.4g tungsten hammer. Meanwhile the mav is using a 20 something hammer!
NOE has sizing dies. for 25 airgun to get down to .248. you then need to go under this one to get the .247 and smaller if needed. you could take the smaller sizes and lap them out to the bigger half steps you're after. example: take a .248 sizer lap it to .2485. Be the faster and probalby the most economical way to get there versus getting units tool and machined out to the specs
yes, I am aware of what is available, but I cannot make the holes smaller
so I would still need to outsource couple bushings. Looks like I will make a whole set from scratch and source to a single shop.
I realize you can't make holes smaller, but you can make smaller holes bigger. We are only talking about making a hole .0005 larger. So a .247 diameter bushing could be turned to a .2475 diameter by lappingyes, I am aware of what is available, but I cannot make the holes smaller
