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Post by AxeHandle on Aug 19, 2012 10:05:01 GMT -5
John says he thinks he can borrow a 375SM reamer. He asked what twist and contour we would want. After a quick look at DW specs I said 16 twist. Decided that it would be good to start a new thread to discuss this before we send a 357 Maximum to Jasper AL for conversion. How about it? Twist? Length? Contour? I'm thinking 16 twist 7.5 inch barrel with the barrel as heavy as looks good..
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Post by hammerdown77 on Aug 19, 2012 10:27:31 GMT -5
Somewhere there's a guy who has a bunch of NIB 357 maximums who is going to have a nice chunk of change in his safe after you guys make them all extinct!
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Post by AxeHandle on Aug 19, 2012 10:38:17 GMT -5
We have seen that guy! He goes by the forum name Coogs!!!
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shorty500
.327 Meteor
too many dirty harry movies created me!
Posts: 912
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Post by shorty500 on Aug 19, 2012 10:58:08 GMT -5
lol yup. Going to keep my 10-1/2 original. It wears custom grips, steel ejector housing and Bowen Rough Country rear but the factory parts are safely stored. If found a shot MAX would build up a .445 extremely quick though
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Post by agrizz on Aug 19, 2012 11:03:24 GMT -5
Axe
Are you building a new longer cylinder as well?
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Post by AxeHandle on Aug 19, 2012 11:07:48 GMT -5
Original? Yup I have an original that Kings6 gave me that will be the 375SM to go with my 357SM, 414SM, 445SM, 475 Max and 500 Max... The closest to original in my "set" will be the Harton tuned 357 Max that the Dawgs gave me...
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Post by AxeHandle on Aug 19, 2012 11:11:35 GMT -5
The general consensus is that outside of cosmetics the custom cylinder doesn't really buy us anything in 375 and 414. Now that I've written that sit back and watch me come up with some long nosed beasty bullets I want to use in the 375 and 414. The general positive here is that I am not a heavy bullet guy...
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Post by agrizz on Aug 19, 2012 11:26:40 GMT -5
Axe
You do not have to be a heavy bullet guy. The issue with the ruger cylinder is that it is a little short for the .375 unless you are using Keith or some other flat nosed bullet. If you are using a 220 grain hornandy you may be ok. However if you go with a rifle design like the 235 then you get into a couple of issues.
One is the case wall thickness on the 38-55 or 375 winchester brass. When you seat the bullet deep enough to clear the front of the cylinder then the case expands enough that you cannot chamber the cartridge. This is due to the length of the bullet forcing the case wall out.
The remedy for this is to purchase a .375 reamer and ream out the inside of the case enough so you are able to seat the bullet.
You may find this issue with different brands of brass as well.
The other will be the location of the crimp groove and there is no real remedy for this other than custom bullet molds or crimping over the ogive of the bullet.
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Post by AxeHandle on Aug 19, 2012 11:39:06 GMT -5
Thanks! Exactly why we Need this thread... Lots cheaper to custom cylinder the beast up front that to do it as an after thought..
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Post by agrizz on Aug 19, 2012 12:01:42 GMT -5
I believe this is the best shooting cartridge of the Super Mag series. Easy on recoil and accurate as you would not believe. One of the guys from the IHMSA in the 80's shooting a 1 1/2 inch group at 200 meters if I remember correctly.
It is just to bad the factories did not spend a little more time with it.
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Post by 2 Dogs on Aug 19, 2012 12:51:49 GMT -5
Nels would be the authority here Stan. Suggest you pay attention!!
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Post by AxeHandle on Aug 19, 2012 13:52:01 GMT -5
Guess the DW and Seville have been the only factory 375SM revolvers built. Danged dies are off the Redding custom list. Even with a solid dealer connection that killed $150 and 4 months... Am I guessing right that the 357 Max Cylinder will have the Ruger standard .4 nose bullet limitation? Might buy a few custom bullet molds for the price of a custom cylinder!
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Post by agrizz on Aug 19, 2012 15:03:17 GMT -5
The .357 SM Ruger cylinder is 1.940 and the Dan Wesson .375 is 2.080 and the Seville cylinder is 2.115. The best fit for the .375 SM is the Seville Silhouette at 2.115. This in turn would cause you to open the frame window by about .035 in the front side.
Should you go with this cylinder length you would have room for a good charge of powder as well. Something that would get the bullet down the road at about 1300 to 1400 fps on the high side at 1400. With a 10 inch barrel.
There is also the possibility of using some thin walled 30 30 brass however you will still have some of the same issues with the basic ruger cylinder.
I have just been thinking here about the time frame of 1980 to about 1985 when Elgin was working with these cartridges and getting companies to chamber them. It seemed like ruger would chamber the .357 SM and no others for various reasons. Dan Wesson and Seville chambered most of the Super Mag cartridges. With Dan Wesson being the primary producer of all the SM series.
The .375 SM was originally to have a straight walled case the same as the other cartridges. However when the case was chambered it was determined that it was to be on the taper case of the 30-30 type case. This is the only SM that was designed in this manner.
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Post by AxeHandle on Aug 19, 2012 17:02:29 GMT -5
JT wrote a few pages about these things.. As an IHMSA member since '78 (3304L) I was exposed to all the writings in the Silhouette during the SuperMag development years but I was deep into shooting other things. Was never aware of a match that wasn't half a day's drive away. As such, the content of the articles didn't stick in my head very well..
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Post by Ken O'Neill on Aug 19, 2012 19:13:54 GMT -5
I joined in '78 also. Old Geezers here. Region 2, particularly in the Carolinas, was a hotbed of silhouette matches.
Stan, if I was building a .375 SM on a Ruger, I'd want a long cylinder and personally, I'd also want a barrel longer than 7 1/2" ... maybe 8 1/2 or 9", if only for the aesthetics.
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