222.5 Information

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deepcreekt6

Guest
Hi,
I just purchased a Benchrest rifle that has a Shilen barrel that is stamped Shilen 222.5 that has a Remington 700 action with a sleeve that is also stamped Shilen.

I did a search on the forum under 222.5 and nothing came up.

I want to find out what the .5 means?

It is a nice heavy rifle and want to find out if I can just have it reamed out to .223?

Any information would be a big help,

Much thanks..............Bill
 
If I rember correctly------

deepcreekt6 said:
Hi,
I just purchased a Benchrest rifle that has a Shilen barrel that is stamped Shilen 222.5 that has a Remington 700 action with a sleeve that is also stamped Shilen.

I did a search on the forum under 222.5 and nothing came up.

I want to find out what the .5 means?

It is a nice heavy rifle and want to find out if I can just have it reamed out to .223?

Any information would be a big help,

Much thanks..............Bill
Click to expand...
It was a 222 mag with the sholders pushed back similar to the way we do waldogs or .22 short ppc's Not many rifles were chambered for them. This was back in the day of the 6mm int etc. It would be a shame to rechamber it.
 
The most common version was made by running a 222 reamer in .150 deeper than normal to the 1.850 length of the 222 mag. To make cases, put a .150 gauge block between the 222 FL die & the shell holder & push back the shoulders of 222 mag cases. The idea was to get the longer neck of the 222 with more capacity.

I made up something similar by running a 222 mag reamer in short to the length of the 223. Pretty much the same capacity with the neck .050 shorter so I can reform common 223 brass. Shoots well with 4198 & 52 gr HPs.
Regards,
Ron
 
Much thanks for all the information and a quick reply. I appreciate the help.
Bill
 
I will call Shilen next week to find out exactly how they chambered it.

I do like how Ron uses .223 brass in his.

Bill
 
Nothing standard about these. I sometimes call mine a 222 3/8 rather than a 222 1/2. It's just that I have a 222 mag reamer with a 244 neck, so that's what I used.
Regards,
Ron
 
If i remember corectly there were two types the shillen type and the hart type. who chambered the rifle is the next question. Or maybe a chamber cast would be the wizest thing
 
Gerrym is correct. You need to make a chamber cast and measure the sholders with whatever you use for a bump gauge and set your dies accordingly
 
I am trying to understand the advantage of a 222.5 or a 222 3/8 over a standard .222 Mag? Even over the standard .222 I would not think you would gain that much increase in velocity to make a difference plus you have more case preparation.
Bill
 
It's less case prep than a lot of cases. Just put through a FL die, turn the necks, and shoot. I think the long case neck of the deuce is an advantage.
Regards,
Ron
 
My memory is a little fuzzy but I'm thinking they thought that they could go to something besides 4198 and get smaller groups. maybe 4895.? This game has always been about smaller groups
 
Jerry your correct 4895 was the preferred powder with the 222 1/2 Nice long neck like the 222 with about 2 more grains of powder capacity.
It was a sweet case in it's day. shot tighter at 100 then the 222 MAG CASE AND MORE VELOCITY THEN THE 222. very similar results as the 222 ackley improved
 
It could be a .222 35, or a .222 45 All that means is a .222 with a 35 degree or a .222 45 degree shoulder. I had a .222 45 and it was real good, but not as good as a PPC. But me thinks you should do a chamber cast.
 
Bill, I know that you are old enough------

Bill Gammon said:
It could be a .222 35, or a .222 45 All that means is a .222 with a 35 degree or a .222 45 degree shoulder. I had a .222 45 and it was real good, but not as good as a PPC. But me thinks you should do a chamber cast.
Click to expand...
To rember those days. Yes, there was some experimenting with the 35* and 45* sholders. but I believe that the duce and a half was a lenghtened .222--- some where short of the 222mag. and yes, he definately needs to make a chamber cast. It was that kind of experimention that got us to where wer at today EH! Is it cold up there?
 
The one I remember was the one where they pushed back the mag case to form a longer neck' Not sure of that dimention due to it being two different styles. some trimming was involved also.
 
Jerry Dailey said:
To rember those days. Yes, there was some experimenting with the 35* and 45* sholders. but I believe that the duce and a half was a lenghtened .222--- some where short of the 222mag. and yes, he definately needs to make a chamber cast. It was that kind of experimention that got us to where wer at today EH! Is it cold up there?
Click to expand...

No it is not cold up here, actully it is quite warm up here, 29 degrees and a foot of snow, so everything is cool. And I am not that old, EH!!!!! :)
 
Much thanks for everyones help and input it is much appreciated.

I do have some cerrosafe that I have had for many years and finally will have a chance to use it.

Bill
 
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