older 640


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griz1
March 27, 2010, 01:15 PM
I have a older all stainless S&W 640 in 38 spc only. It weight about 19 oz and is a pleasure to shoot. I'm away from my guns now but I know it isn;t stamped +P. Would you shoot +P in this gun or check with S&W? Thanks and if anyone has pictures of these older 640's I would love to see them.

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rcmodel
March 27, 2010, 01:28 PM
I would shoot standard ammo for extended practice shooting, and carry +P.

A limited amount of +P will not hurt it.

It is not +P rated because there was no +P rating back then.
There were hotter factory loads then todays +P though.

rc

wcwhitey
March 27, 2010, 10:19 PM
I think RC is thinking of the older Centennials models, Model 40. Not to disagree with him but with your 640 Centennial was made with +P in mind. It was manufactured after +P was around (1990ish I believe) and in common use. I have been carrying my 640 no dash for 18 years daily. It gets shot with +P and only +P. Round count well into the thousands. It will hold up and hold up well. Bill

GRIZ22
March 28, 2010, 05:30 AM
I know it isn;t stamped +P.

Well Griz, once upon a time no guns were stamped +P.

AFAIK the stainless 640 was introduced in the 90s. A friend had one in 38. All he shot was +P.

To be sure call or email S&W Customer Service with the serial number handy and they will tell you. If they say no I'd go with rcmodel's advice.

madcratebuilder
March 28, 2010, 08:27 AM
The M640 was released long after +P came on the market. I'm sure S&W well tell you it's safe to use +P's on a limited basis. Call them and confirm it.

aHFo3
March 28, 2010, 07:01 PM
My uncle has an older 640 that is stamped under the cylinder on the frame "tested for +p+" The early 640's had that designation, although not on the barrel. The gun remained the same even though the rating changed. Check out this link on the S&W forum: http://smith-wessonforum.com/s-w-revolvers-1980-present/131436-640-p-rated.html

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