Plum coloring

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BeagleDog

Blackhawk
Joined
Sep 12, 2007
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625
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Mesa, AZ
I've been looking at a NM BH on GB that's a 1980. Nothing special about this gun except it definitely has tinges of plum throughout and the loading gate is almost pure plum. What exactly causes colorization in a blued gun?

Thanks
 

Hondo44

Hawkeye
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Apr 3, 2009
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People's Republik of California
Mine is from 1986 with a beautiful shade of plum. There's a long thread about the reason for the plum color you may want to pull up for a full discussion.
Basically it's slight differences in the alloy of the metal. Guns do not usually leave the factory this way but gradually turn plum colored. Also experts say the bluing solution heat and age can give plum results. It is not exclusive to Rugers. Many Ruger collectors cherish the guns with plum frames and loading gates.
 

JWhitmore44

Blackhawk
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Oct 23, 2008
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987
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NW Kansas
http://www.rugerforum.com/phpBB/viewtopic.php?t=103909&postdays=0&postorder=asc&highlight=plumb&start=15

http://www.rugerforum.com/phpBB/viewtopic.php?t=41127&highlight=plum

Along with some pictures of plumb pretty guns there is info on why they do what they do :)
 

Flash

Buckeye
Joined
May 21, 2005
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1,164
Location
Pennsylvania, USA
Hondo44 said:
Mine is from 1986 with a beautiful shade of plum. There's a long thread about the reason for the plum color you may want to pull up for a full discussion.
Basically it's slight differences in the alloy of the metal. Guns do not usually leave the factory this way but gradually turn plum colored. Also experts say the bluing solution heat and age can give plum results. It is not exclusive to Rugers. Many Ruger collectors cherish the guns with plum frames and loading gates.

Yep, I had a Remington 700 that was starting to turn a beautiful plum color on the bolt handle and the receiver rings. I've seen Winchesters and Weatherbys that turned plum too.
 

Zebraranger

Single-Sixer
Joined
Sep 23, 2007
Messages
122
Location
Florida USA
I was wondering the same thing. I have an old Single Six where only the loading gate and ejector housing turned plum color, it looks pretty neat against the rest of the gun being black.
 

Ashlander

Single-Sixer
Joined
Nov 2, 2011
Messages
148
Location
Ellisville, MO
Only the investment cast parts turn plum. That's why the cylinders and barrels stay blue while the frame turns plum. Slightly different steel composition used for investment casting.
 

flatgate

Hawkeye
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Jun 18, 2001
Messages
6,784
Location
Star Valley, WY
DCRuger said:
It's a serious flaw that IMO ruins the looks of the gun(s).

Yeah, it ain't nuttin' new. He's a ol' Single-Six that was put together back in December of 1953.

114490279.jpg


Ah, rats, it's got some odd looking colors...... :D Back in the day SR&Co. would "refinish" a gun for the unhappy customer. Probably a waste of time after one looks at this "Factory Refinished" Old Model Super Blackhawk....
357690092.jpg


I think it's gorgeous!

flatgate
 

Driftwood Johnson

Blackhawk
Joined
Sep 25, 2007
Messages
699
Location
Land of the Pilgrims
Howdy

Funny thing. I just bought this Flat Top 44 Mag yesterday. There were five different ones up for auction yesterday, but I bid on this one because it was the oldest and because I really liked the plum loading gate.

FlatTop44Mag01.jpg


The photo is a little bit misleading because of the lighting. There is no plum on the frame, just the loading gate. And it actually is not quite so brilliant, it is a bit more subtle than it appears in this photo. But I sure like it.

I don't have it in front of me right now, but there is an interesting aside about this in Ruger And His Guns by R L Wilson. Ruger was a pioneer in using Investment Cast parts in firearms. It was a pretty new idea at the time. It seems that in the early days, Ruger needed to work the bugs out of blueing their investment cast parts. As already stated, this was just a problem with the cast parts, not the machined parts. The alloy used in Investment Casting needs to be slightly different than the alloys used for machined parts, and it causes problems with the color of the blue. If I remember correctly, just about everything was coming out purple. So they did a lot of work perfecting the blueing process so the parts would come out blue and not purple. About this time Bill Ruger attended a major industry show, and was looking at some new Weatherby rifles. The actions were plum. The question was asked if Weatherby was using Investment Castings. Weatherby never gave a straight answer.
 

DCRuger

Single-Sixer
Joined
Jul 31, 2010
Messages
276
Location
Hartville, Ohio
IMO it's 'hype', pure and simple.
I bought my first Ruger in 1969, a used late 50's Mk1 w/ a muzzle break, and my second was a SBH .44 mag I bought new in 1971 in the Navy ( $125 then BTW, w/ beautiful polishing). I've certainly seen plenty of plum since then but never thought even once of buying a flaw on purpose.
'Plum is Yum" , nope, Plum is chum :>)
 

skeeziks

Bearcat
Joined
Nov 14, 2011
Messages
53
My Cimarron mod. P (Uberti) has Plum only on the backstrap.
Frontstrap and triggerguard are black.
 

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