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Author Topic: Dan Wesson 445 cylinders  (Read 1109 times)

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Offline RollTide

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Dan Wesson 445 cylinders
« on: June 12, 2003, 04:19:16 PM »
I have a VERY early 445 Supermag.  The bore size in the cylinder is a bit oversized.  They later corrected this.  Does anyone have one of the early guns and do the oversized bores effect accuracy, reloading, or case life?

Thanks,
Roll Tide
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Offline 414SM-E.T.GATES

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On the 445 Cyl Bore
« Reply #1 on: August 06, 2003, 05:38:08 PM »

To find out which cylinder hole is over bore you have to mic each one.  Lay open your cylinder and put your calipers in the front and turn it.  You may have to do this several times.  You want .429 or .430  Remember these are mass production guns.  Find out which hole is out of spek and don't use it.  It does effect how well this gun shoots.  Slug your barrel and get a mould made for it.  I have Seen as much as .5 th's on a 375 SM.  Cause is the bore tool, cherry is wore out.
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Father E.T. Gates inventor of the Supermags.  I have books, Load Data Wesson parts, Brass and Dies. "There is no excuse for that first well placed shot"  Elgin Gates

Offline RollTide

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Dan Wesson 445 cylinders
« Reply #2 on: August 06, 2003, 08:05:32 PM »
414SM-E.T.GATES,
Thanks for the info.  It is actually the other end of the cylinders that is a little oversize.  Mine measures about .461" instead of the .457" that it should be.  Maybe they did it to accomodate the 30/40 Krag brass that they used to make the early cases for the 445 SM.  If you have any load data on the 445 SM I would sure appreciate seeing it.

Thnaks again,
Roll Tide
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Offline unspellable

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445 chamber
« Reply #3 on: September 29, 2003, 02:08:54 AM »
Prior to the release of the 445 DW there was a wildcat called the 44 Rhino based on a shortened 444 Marlin case and used in a reamed out 357 Supermag.  The 444 Marlin has a larger base than the 44 SM.
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Offline BigDaddyB

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Re: Dan Wesson 445 cylinders
« Reply #4 on: September 29, 2003, 04:59:33 AM »
Quote from: RollTide
I have a VERY early 445 Supermag.


If you don't mind my asking, what's the serial # on your .445?  I also have an early one and was curious as to how early we were talking about.

brianb
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Offline 340wby

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Dan Wesson 445 cylinders
« Reply #5 on: October 08, 2003, 04:48:42 PM »
yes, I own two 445 super mags and IM VERY curious as the the aproximate serial # range involved
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Offline RollTide

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Dan Wesson 445 cylinders
« Reply #6 on: October 16, 2003, 11:15:38 PM »
I don't know exactly the serial number range where they tightened up the cylinder holes, but mine is #56 and it is at least a few thousands of an inch oversize AT THE HEAD.   I think they were oversize at first because so many were using 30-40 Krag or 303 Brit brass.  Some even used 444 brass that was turned to reduce the head size a few thousands.  The factory brass kind of standardized things a little and when it became widely available I think the cylinder bore size was reduced.
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