Quarter rib recommendations

[Jefferry404]

I am pretty good at finding the end of the neck with micrometer Tim uses his lathe, dial indicator and it is really easy to see where the linear taper ends and the neck radius begins. Then 3D print before cutting chips.
Another consideration with the 2nd step to the breech is how it mates up. Mine has the same radius as the action ring and height, so a seamless fit.

 

[Rare Breed]

I’m looking for recommendations for gunsmiths that do quarter ribs. I’ve seen a few designs I like but would also like to see more options of ribs and elongated rear sight bases some members have had done. Thank you in advance for the information and photos.

I learn something every day on AH! So many times, we use jargon that maybe not everyone knows exactly what it means. For me for example can someone post pictures of a "quarter rip versus say the other sight kind that goes on a Heym please? I just do not understand the difference or what it looks like when the word is used. Thanks!!!

 

[Jefferry404]

Well, when I made the designs, I found many different styles and looks, some short and fat, some long and skinny
Perhaps better to question its purpose. Obviously, a rear sight base. And in the olden days of 1 standing, 4-5 folding leaves, having that long tail gives proportion.
Me, I subscribed to the sighting plane theory, particularly with a square bridge action. Does it work? Who knows, but if they can have folding leaves out to 500 yds…

 

[SkullKeeper]

Well, when I made the designs, I found many different styles and looks, some short and fat, some long and skinny
Perhaps better to question its purpose. Obviously, a rear sight base. And in the olden days of 1 standing, 4-5 folding leaves, having that long tail gives proportion.
Me, I subscribed to the sighting plane theory, particularly with a square bridge action. Does it work? Who knows, but if they can have folding leaves out to 500 yds…

Thinking (critically) about your reply I would imagine the original quarter rib was probably a flat plane that extended from the front of the receiver ring to the rear sight giving the shooter an idea of rifle angle (positive or negative) in perspective to the front sight- just a guess though. Regardless of purpose, if anything, they sure look good!

 

[farmer_john]

How do you guys think it would work/look on a old m77 mk2 that has no irons?

 

[Jefferry404]

@SkullKeeper
that is the idea. But as my previous post mentions, the early qribs are all over the place!

Maybe we should consider a custom AH quarter rib I imagine would be like herding cats
but would be willing to try.

Here is my model 70 375HH stainless (cerakote). Being an retired engineer, I lean to math and logic with a little bit of art, to combine all of the consideration.

and a few examples of early qrib from my files:

 

[SkullKeeper]

@SkullKeeper
that is the idea. But as my previous post mentions, the early qribs are all over the place!

Maybe we should consider a custom AH quarter rib I imagine would be like herding cats
but would be willing to try.

Here is my model 70 375HH stainless (cerakote). Being an retired engineer, I lean to math and logic with a little bit of art, to combine all of the consideration.

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and a few examples of early qrib from my files:


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Thank you for these examples - you’re right about “all over the place”. I had a 375 once where there was a space about 3/4” between the receiver ring and the start of the qrib. I can’t say I liked the looks of but it was great for carrying in hand - my thumb fit right in there for a nonslip grip.

 

[Rare Breed]

@SkullKeeper
that is the idea. But as my previous post mentions, the early qribs are all over the place!

Maybe we should consider a custom AH quarter rib I imagine would be like herding cats
but would be willing to try.

Here is my model 70 375HH stainless (cerakote). Being an retired engineer, I lean to math and logic with a little bit of art, to combine all of the consideration.

View attachment 777773

and a few examples of early qrib from my files:


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Thanks!!!

 

[Jefferry404]

Another example (a very fine rifle for sale here
32mm objective. Due to the scope base height, he could not get the sight plane and still have the objective clear. Hence the first step down in our design to clear 42mm objective with Talley med. Rings.