The rifle seems to have a fast twist: 1:10 or faster - I didn't measure.
The ballistics on the box says it fires a 74gr Kegelspitz Geschoss but no velocity given. The RWS box gives a trajectory - looks mighty flat in inches/yards for a 230yd Zero:
50/+0.2"|100/+1.4"|150/+1.6"|200/+1.0"|300/-3.7"
I am reckoning he can use the 60gr bullets and heavier, and handle it exactly like a Swift.
He is looking for loads for this little beast - has anyone got any suggestions?, Say for the 69gr BTHP and the 60gr Nosler Partition.
I know we are South African, we can work out the equivalent local powders to the American ones. We just need a starting point.
Cheers
Pete
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I hunt, not to kill, but in order not to have played golf.
The difficulty is that the case has a very, very thick neck. So thick that the bullet has to be swaged into the case. It is not possible to pull bullets from loaded ammunition without destroying the case. My gunsmith has done a number for Irish stalkers who used not to be able to use more than 22 centrefire. He only had a standard reamer (with the thick neck) and I was concerned about case necks splitting when turned down to normal thicknesses.
Wihtavouri have loads in their manual, this site also has loads in the load section. Good luck.
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Larry
There is an American wildcat version with a neck turned down to a reasonable thickness that is somewhat popular, especially using the 80 gr match bullets for long distance matches. It normally uses 6mm Rem brass to eliminate intermediate sizing steps.
One of the problems with such a thick neck is that near maxium loads are used to rpoperly expand the neck and seal the case. a relatively mild load doesn't seal and leaves a very sooty case.
There is data for the 22/6mm in the reloading section of this site, some of the velocities are pretty sporty.
mfg,
dcjs
50--AR2208--37--3700
50--AR2209--41--3700
50--AR2213--46--3700
60--AR2208--35--3450
60--AR2209--39--3450
60--AR2213--44--3450
69/70--AR2208--34--3300
69/70--AR2209--38--3300
69/70--AR2213--43--3300
74--AR2209--37--3250
74--AR2213--42--3250
Use magnum primers with AR 2213 powder
If reloading old style thick walled brass reduce these loads by at least 4 grains to avoid dangerous pressures.
Conversions
AR2208-IMR4064--AA2520
AR2209-IMR4350--W760--H414/H4350--Tu7000-N204
AR2213-IMR4831--WMR--MRP--AA3100
Regards
Deafdog
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deafdog@one.net.au
www.deafdog.one.net.au
Yes I see this case has a really thick neck. The bad news is that the doc wants to load it down so he can crop (cull) impala on his farm. I am thinking now that if the case neck is too thick he is going to get inconsistent results at best. It looks like this cartridge really has to be stoked to perform.
I will pass on the info. Thanks again.
Cheers
Pete
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I hunt, not to kill, but in order not to have played golf.
I had one of these a few years back, and I gave it away.
I think the major problem with it is the factory brass - in this case RWS. It was very thick, and somehow I was not able to get anywhere near the velocities I was getting from the 220 Swift.
Funny enough, I just received a reamer for this one a couple of days ago, and I hope I will be able to build a rifle for it in the not too distant future.
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saeed@ emirates.net.ae
www.accuratereloading.com
quote:
Originally posted by Rust:
...Germans who developed the thing use a rimfire adapter for plinking duty...
Nah Rust, not for plinking - you won't hit the broadside of a barn with one of them things. However, they are accustomed to using a "Fangschussgeber" for finishing off not-yet-dead critters at short ranges. It's less messy than a "Hirschf�nger"...
-- Mats
quote:
Originally posted by dcjs:
@pete:
I'd even say the Swift is the knock-off (not everything was invented in the States guys!!), although I'm not absolutely sure of the date of birth of this cartridge.
Well, this has often happened indeed. Just thinkof the "All-American" .35 Whelen, which is no more than an uninspired copy or at best a re-creation of the truly excellent German 9 x 63. Or the .244 / 6 mm Remington , which only takes up idea of the century-old German 6 x 58.
However, the .220 Swift was introduced in 1935, and was built on the 6 mm Lee Navy case, whereas the 5,6 x 57 RWS saw the light of the day around 1964. Precursors (Swiss and Italian experimental military cartridges) date back to the 1880s and 1890s.
Regards,
Alexander Eichener