What did you end up doing? I'm considering the same mount for my 625, but with a Bushnell TRS-25. The TRS-25 is also too heavy by about 3/4oz. But the mount uses the same 3 screws other mounts that support larger red dots and such. Is the limitation due to an issue with the threaded holes in the frame or the mount itself? I'm going to be running light-to-standard 45acp loads if it matters.
My other option is to buy the Raptor mount and a Holosun RDS (nearly $300 combined). I'd rather go with the TRS-25 since I already have that and would only need the base.
Chris
I did some poking around online and it seems other weaver mounts (such as the Weaver 401) are used to mount larger red dots and even scopes. Other bases using the same mounting method also support heavier devices. I'm going to speculate the Weigand limit is their own and not an issue with the existing threaded holes.
I found the Weaver 401 on Amazon for $7. It's not quite as clean as the Weigand, but it works.
Chris
Been working with a couple of different red dot setup on a S&W M69 L Frame .44 Mag. Here's a Trigicon RMR 6.5 MOA dot mounted on a EGW base. The base is very compact and mounts with only one screw leaving the front of the factory sight mortice open.
Also have a C-More STS mounted on the same gun with the Weigan mini wigatinny SP? The RMR/EGW is noticibly lower.
Have a Leupold Deltapoint Pro and a JPoint mount that I'll be trying out soon on one of those guns.
Here's a picture of an N Frame S&W with C-More STS and Alchin SP? mount and a Freedom Arms M83 with a JPoint mount and Jpoint red dot.
Paul
I wish you guys posted the holsters you are using with each Red dot mounted Revolver. I recently put a Weig-a-tinny mount & Vortex Venom red dot on my Taurus tracker 692 with 6.5" barrel. All of that was pretty easy to find and assemble. The hardest bit is finding a holster for the setup. What did you guys do, just cut a holster?