Taurus has the 827 or the model 66 which both match your criteria.
They both hold 7 shots instead of six. I have a 827 and two model 66s.
The 66s are .357 magnum revolvers and the 827 is in .38Special.
HKS and Safariland make speedloaders for these. So does 5 Star.
The 66s can be had with a 4" or 6" barrel.
These two are very accurate with 140gr.-158gr. projectiles in .357 magnum or .38Special. These hit to point of aim or close to it.
I've got a 30 year old 66 that is durable, has a great smooth and light trigger pull, and still going strong.
I can also recommend the Ruger GP-100 or the SP-101. The SP-101 comes now with a 4.2" barrel or shorter ones. Granted, the SP model holds 5 rounds, but it is a sound design.
I have both Rugers, but in .327 Federal magnum.
The S&W model 686 is a fine pick as well.
http://www.ruger.com/products/gp100/models.html
http://www.ruger.com/products/sp101/models.html
http://www.taurususa.com/product-details.cfm?id=278&category=Revolver&toggle=tr&breadcrumbseries=MF2
Rossi has the 851 which looks somewhat like a Colt with the barrel rib and fits in Colt D frame holsters.
www.rossiusa.com/product-list.cfm?category=1
The 851 is a .38 Special +P rated gun.
There is also the Rossi 971 or 972 in .357magnum if you have a hankering for something like that.
If you want the links for those I can get them to you by PM.
I do own a Rossi 462 snub revolver in .357 as a CCW revolver in a Theis IWB holster. Theis has OWB holsters as well know.
www.theisholsters.com/