Will Lyman 57sml fit this?

[JHSA-President]

Hi all- I just got new to me Cabela’s Investarm .50. Cal. It has a curved tang. Will the Lyman 57sml sight work on this?

 

[FishDFly]

You might have to remove some metal from the bottom of the sight.

 

[bubba.50]

Should fit no problem other than drilling and tapping a center hole in your tang. But with the curve you may have to shim the back end of the sight to get it level with your line-of-sight. And as FishDFly said, may have a bit of contact with the stock. If so, please do as he suggests and remove material from the sight base instead of rasping on that nice stock. Probably the biggest trick will be finding one in stock anywhere.

And if you get the one for the Great Plains, it's the exact same sight but it comes with a curved spacer that likely would work for your gun too.

 

[Idaho Ron]

If your worried about the curve just make a shim. This one was made out of aluminum. I made it with a file.

 

[Daveboone]

I just mounted the same sight on my t/c renegade. The base of the sight is strait. I think you will need to either shim (as someone else mentioned) or file the aluminum base to the same contour.

 

[JHSA-President]

Just so I can visualize, where does the sight sit on an actual lyman, like where does it get attached to on a GPR or Deertsalker?

 

[bubba.50]

Just so I can visualize, where does the sight sit on an actual lyman, like where does it get attached to on a GPR or Deertsalker?

The same way as on a TC, rear tang screw and a D&T hole halfway between your two tang screws. Lyman tangs have more curve so if you get the one for GPR it’ll have a spacer included & a longer tang screw for the rear.

 

[JHSA-President]

The same way as on a TC

This is my first traditional muzzleloader, so the reference to the TC does not exactly clear it up for me! Does no body install them by drilling and tapping the barrel itself forward of the breech plug? It's always on the tang?

 

[Flint62Smoothie]

Does no body install them by drilling and tapping the barrel itself forward of the breech plug? It's always on the tang?

No, as for an 'aperture' sight - that the sight is - you need the aperture close in front ofyour eye. You look through it and you won't 'see' it, you will just know it is there in your peripheral vision, but your eye will automatically center the front post in that circle. You can get different size apertures, plus adustable ones. For hunting, you'd want a larger one.

And 'TC' is short for Thompson Center or T/C, who made a ton of Hawken muzzleloaders like Investarms, who made them for Lyman. But I realize not having a 'T/C' before resulted in a no comprende to you.

 

[JHSA-President]

And 'TC' is short for Thompson Center or T/C, who made a ton of Hawken muzzleloaders like Investarms, who made them for Lyman. But I realize not having a 'T/C' before resulted in a no comprende to you.

Thanks. I did know that TC was for Thompson Center, I just meant that the reference to "just like on a TC" did not help me because I do not know what it looks like when you mount a peep sight on a TC, not having seen one.

 

[bubba.50]

This is my first traditional muzzleloader, so the reference to the TC does not exactly clear it up for me! Does no body install them by drilling and tapping the barrel itself forward of the breech plug? It's always on the tang?

ALWAYS on the tang. There is a small, squarish, flat-bottomed Williams peep you can get if you want it barrel-mounted. It would require 2 holes to be D&T on the top of your breechplug. And I'm sure there are others. And maybe the Johnson peep would work for you but it's non-adjustable.

 

[Daveboone]

Just a note...On my T/C, I did have to whittle a bit of wood on the L side of the stock and behind the tang to make it fit flush. I called Williams direct and talked with the office when ordering. They are a relatively small operation, very hands on. They may be able to answer questions for you. I had to chuckle when I called to order my site, about three weeks ago...They apologized for not getting it out that day, but they had them, but "The girls out back are still assembling them for packing". I told them I was more than happy to have one that would still be bakery fresh.