Semi Auto 22-250?
Peter Roach
Swedish 42B 6.5mm to be such a thing but never finished it. Has anyone done
anything similar? I know barrel wear is an issue, but I'm curious why it
isn't a topic.
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As such, most people chamber it in bolt actions or single shots in order
to get the best possible accuracy. Also, as you say barrel wear is an
issue. At the pressures and velocities available, rapid firing could
render a barrel useless in a few hundred rounds.
brian
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Ken Marsh
Peter Roach <pro...@videon.wave.ca> wrote:
#I have never seen a 22-250, semi auto is one made? My dad was modifying a
#Swedish 42B 6.5mm to be such a thing but never finished it. Has anyone done
#anything similar? I know barrel wear is an issue, but I'm curious why it
#isn't a topic.
Oh, yeah. Give up the fine accuracy of the bolt rifle, encourage the
user to overheat the barrel and burn out the throat of the bore. Have
copper fouling nightmares that never end.
Attaching gas plumbing to a barrel means that it's not free-floated.
That's why the best gas guns in the world run only 1/2MOA accuracy, but
that's all they need in order to win at any high-power competition. The
difference between an average varmint rifle and a great one, is the
average one shoots greater than 1/2 MOA versus the great one at less
than 1/3MOA. Of course, with factory "varmint" rifles going at 1-2MOA
before customization, maybe there is a market of goobers for a rifle
like this after all... until they realize they can't accurize it like
they can a bolt action Win 70, Rem 700 or Savage 110.
About once a month someone notices that all military self-loading rifles
are in mild chamberings like .308 or .223, that highly accurate bolt
actions come in high intensity cartridges like .22-250 or 300WinMag, and
gets the bright idea they've discovered a new market niche and want to
know why noone makes a M14/FAL/G3/AK/whatever in a "real" cartridge.
After being disgruntled with the answers, about 1 in 1000 build one
anyway with a stainless custom barrel and a good scope, and discover it
still shoots worse than 1/2MOA, point of impact is subject to barrel
heat drift, the scope gets beat-up and dies from the impact of the
action, sharp shouldered cartridges don't feed well, high pressure
cartridges don't always extract from hot barrels, and someone wants to
buy the copper mining rights to the barrel.... basically all the things
the original system designers knew and avoided.
There are a couple of magnum self-loaders, namely the Browning BAR II
and Remington 7400. The AR-10 or SR-25, I forget, can be had in .243, if
you have the $$. That's about it. A couple of years ago there was an
amusing post here on rec.guns about someone trying to compete with a
7400 in hi-power competition. It basically failed every way imaginable
once it heated up... and I don't think it was even using a
high-intensity cartridge!
Ken.
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Litsios
accurate than most semi autos are.
GL
Adrian Rogers
-Adrian