.22 CHeetah

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STWshooter

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Could only find one mention of the CHeetah in the reloading forum. Does anyone else out there have one. Would be interested in sharing load data.
 
Brutus, you are correct

I have the Mach 1 version.
Rem 700 short action
Hart stainless 26" heavy sporter 1 in 16 twist

I start with 243 brass (large primer)

55 Sierra or ballistic tip
likes Rel 19
Rem 9 1/2 Primer

Be very careful of case neck thickness. I turn mine to 0.011"
 
Oz4s said:
Brutus, you are correct

I have the Mach 1 version.
Rem 700 short action
Hart stainless 26" heavy sporter 1 in 16 twist

I start with 243 brass (large primer)

55 Sierra or ballistic tip
likes Rel 19
Rem 9 1/2 Primer

Be very careful of case neck thickness. I turn mine to 0.011"
Click to expand...
What a long range LASER! Ballistics that exceed a Swift.

You lucky man.......
 
Mine is a Remington 700BDL short action with a Canjar trigger and a 26" Douglas barrel. It is a 1-16 twist, Mark II heavy barrel chambered and installed by Jim Cuthbert of JGS tool and die in Oregon. Same guy mentioned in Jim Carmichaels Outdoor Life write up going way back. Haven't used the rifle for quite some time, but will be getting back into it. As I recall, the best groups were with 52 gr. flat based bullets. One of the 5 shot groups measured just over 3/8".
 
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STWshooter said:
Mine is a Remington 700BDL short action with a Canjar trigger and a 26" Douglas barrel. It is a 1-16 twist, Mark II heavy barrel chambered and installed by Jim Cuthbert of JGS tool and die in Oregon. Same guy mentioned in Jim Carmichaels Outdoor Life write up going way back. Haven't used the rifle for quite some time, but will be getting back into it. As I recall, the best groups were with 52 gr. flat based bullets. One of the 5 shot groups measured just over 3/8".
Click to expand...

Do you have mk1 or mk2 ?

check this

http://www.reloadersnest.com/frontpage.asp?CaliberID=349
 
Pathfinder said:
so basically a 22-243 middlestead with a small rifle primer ?

What's the advantage to using the small rifle primer ?
Click to expand...

Ballistically that is correct, though the CHeetah (and that is the correct spelling, the first two letters were for the cartridges creators, hence the capitalization) has a very slight case capacity advantage. We never saw it in the field or over the chroney's though. There was more variation from different rifles then the different cartridges.

As I recall (re: the small primer), it gave a less violent flame intrusion into the case for a smoother burn, which supposedly led to smoother pressure rise, which gave less standard deviation, and so on down the path. In BR guns I think there is some truth to this, but for poodle popping in the pasture it was pure overkill. FWIW - dan
 
dan belisle said:
Ballistically that is correct, though the CHeetah (and that is the correct spelling, the first two letters were for the cartridges creators, hence the capitalization) has a very slight case capacity advantage. We never saw it in the field or over the chroney's though. There was more variation from different rifles then the different cartridges.

As I recall (re: the small primer), it gave a less violent flame intrusion into the case for a smoother burn, which supposedly led to smoother pressure rise, which gave less standard deviation, and so on down the path. In BR guns I think there is some truth to this, but for poodle popping in the pasture it was pure overkill. FWIW - dan
Click to expand...

sounds like fun....I was reading that the ignition in cold temperatures was sometimes a problem with the small primer......that might be an issue today as its -28 C plus wind chill.
 
dan belisle said:
Ballistically that is correct, though the CHeetah (and that is the correct spelling, the first two letters were for the cartridges creators, hence the capitalization) has a very slight case capacity advantage. We never saw it in the field or over the chroney's though. There was more variation from different rifles then the different cartridges.

As I recall (re: the small primer), it gave a less violent flame intrusion into the case for a smoother burn, which supposedly led to smoother pressure rise, which gave less standard deviation, and so on down the path. In BR guns I think there is some truth to this, but for poodle popping in the pasture it was pure overkill. FWIW - dan
Click to expand...

Isn't there a slight difference in the shoulder between the Middlestead and the CHeetah? My friend has both and told me he can chamber a CHeetah into the Middlestead but cannot chamber a Middlestead in his CHeetah.
 
He must have a CHeetah Mk II. The 22-243 Middlestead is the 243 Win case necked down to 22 cal and with the shoulder pushed back slightly and the angle changed (to 30 degrees if memory serves, but I could be wrong). As mentioned, the CHeetah is a 308 Win case, either with a small primer pocket or large, necked down to 22 cal. The shoulder was improved to the Ackley angle (40 degrees) on the Mk I and left at the standard 28 degrees on the Mk II. Anyway, usually a 40 degree CHeetah won't fit in the Middlestead chamber (and they are definitely not the same cartridge, so please don't intermix them), but a Mk II sometimes (depending on who cut the chamber) will. FWIW - dan
 
STWshooter said:
Mine is a Remington 700BDL short action with a Canjar trigger and a 26" Douglas barrel. It is a 1-16 twist, Mark II heavy barrel chambered and installed by Jim Cuthbert of JGS tool and die in Oregon. Same guy mentioned in Jim Carmichaels Outdoor Life write up going way back. Haven't used the rifle for quite some time, but will be getting back into it. As I recall, the best groups were with 52 gr. flat based bullets. One of the 5 shot groups measured just over 3/8".
Click to expand...
IIRC, the Outdoor Life 1985 hardcover copy had the JC written chapter on this wildcat.
 
dan belisle said:
He must have a CHeetah Mk II. The 22-243 Middlestead is the 243 Win case necked down to 22 cal and with the shoulder pushed back slightly and the angle changed (to 30 degrees if memory serves, but I could be wrong). As mentioned, the CHeetah is a 308 Win case, either with a small primer pocket or large, necked down to 22 cal. The shoulder was improved to the Ackley angle (40 degrees) on the Mk I and left at the standard 28 degrees on the Mk II. Anyway, usually a 40 degree CHeetah won't fit in the Middlestead chamber (and they are definitely not the same cartridge, so please don't intermix them), but a Mk II sometimes (depending on who cut the chamber) will. FWIW - dan
Click to expand...

I've got a .22-243 Middlestead and I had to learn the hard way that there is more than one variation on it. The version I have leaves the body shoulder junction and lengthens the neck when you increase the shoulder angle to 30 degrees.

The version I borrowed dies for left the shoulder neck junction in tact while blowing the case body forward to create the 30 degree shoulder.

I do believe his version is the MK II. I just knew that the shoulder angle had to be different otherwise they would be an identical cartridge.
 
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