Front and Rear Sight Blade Measurements

[dapster]

I have two different size rear sight blades each rectangular in shape. They are each almost exactly 20 millimeters across. One size is almost exactly 10 millimeters in height, the other being almost exactly 12 millimeters in height.

Further, I have what appear to be identical front sight bases each with a pinned blade. The height of one such blade is almost exactly 3/16 inches high, the other being almost exactly 4/16 inches high.

I'm interested in the measurements others might take.

[stoky]

I found out (here) that there are three different height rear and six varieties of front heights.
Best forget the sillymeters, and spec in inches American.
The factory was less than helpful when I had a problem with running out of adjustment on the rear sight. They told me that all fronts were the same, and that there were two choices in rear sight height. I guess this is what they had available for sale. When I told the rep it was shooting high with the sight bottomed out, she offered to sell me a higher rear sight. 

[Ladobe]

With TC's for both the front and rear sight heights to be correct for a barrel depends on the barrel length and what cartridge the barrel is chambered for.   

For Contenders, between the old and new styles of screw removable sights there are 6 heights for front and 6 for rear.   The fronts sights on octagon barrels are permanent, so only the rear sight can be changed.

The heights are in inches... on front sights measured from the top of the barrel to the top of the sight blade; on rear sights from the top of the sight base to the top of the sight blade. 

So if you are asking for help to determine correct sights you'll need to list the barrels length and the cartridge its chambered for.

Ladobe


I don't have complete sight charts, but do have some of them for 10, 14, 16 and 21" barrels.

[dapster]

I don't have complete sight charts, but do have some of them for 10, 14, 16 and 21" barrels.

I'd appreciate whatever sights info you have for both 10 and 14 inch barrels.

Specifically, though, I was not seeking help to determine which sights I might need. Rather, I'm trying to figure out which sights, in fact, I have. Once I know what I've got, I can then define what I might then want.

[Junior1942]

I wonder why T-C made the 10" octagon barrel front sights non-changeable?

[Ladobe]

Specifically, though, I was not seeking help to determine which sights I might need. Rather, I'm trying to figure out which sights, in fact, I have. Once I know what I've got, I can then define what I might then want.

Simply measure your sights as above and I can define what you have.   Buying a barrel to use a rear sight in hand is a new one though.

[Ladobe]

I wonder why T-C made the 10" octagon barrel front sights non-changeable?

Probably because there is not much "meat" on the muzzle end of these barrels to run sight mounting screws into or cut sight dovetails in, especially on the bigger bore barrels.   Also maybe in part by default because almost all handguns had fixed front sights.   

[Curtis]

Probably because there is not much "meat" on the muzzle end of these barrels.........

Wooooo, you got that right.  Especially in 44 and 45!!

Curtis

[Hopalong7]

     The first "bull" barrels also had fixed sights or in some cases had no sights.  I believe the first bull was the 30 Herret and it was only tapped for scope mount.
Walt