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Adding a rib to a new gun

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6.2K views 14 replies 7 participants last post by  West  
#1 · (Edited)
It’s a relatively new gun to me so I’m really not sure where it’s shooting. A friend said he’ll go out with me soon and pattern it as I can’t shoot as I just had neck spinal fusion. I tried it on one round of sporting clays and it felt like the typical 60/40 but we’ll make sure because I would like a pitch adjustment for 70/30. For me, the main goal on adding a rib is to get my head the highest upright possible to reduce strain on the fusion. Shouldn’t I just get the tallest rib possible, then? I keep hearing I need to build a balsa wood rib to see how high I want to go. I haven’t shot the gun on trap yet. Sorry if this is an obvious yes. I’ve never added a rib before. Thank you. And yes, I have a wait problem.
 
#2 ·
I wouldn't count on a pitch adjustment to change the POI.
Pitch will help with fit which should make the gun more comfortable to shoot.

Balsa wood is a great idea. You will be able to decide what rib height is most comfortable an allows you to shot your best.
You can also decide on the best POI by raising and lowering the front of the rib.

If you are going to check the POI do so from up close on a rest.
http://www.claytargettesting.com/POI/Point_of_Impact_and_Pattern_Testing_at_13_Yards.pdf

You may need an adjustable comb and or taller posts.

To figure the best rib height and POI are two separate but related issues.

I would get close with the rib height and set POI with the comb.

You can then make a more final version of the rib.

Its All Good

West
 
#3 ·
These are great tips and I really appreciate it. I am planning the 13 yard testing. I am going to need talller comb posts for sure but I’m not sure how much taller yet. With me, I feel whatever’s the most comfortable is the highest priority because I’ll have time to learn to shoot it.
 
#7 ·
I wanted to raise my head somewhat so I went to the local hardware store and they had the balsa wood in various thicknesses so I bought a few and took them home, sanded them and sprayed them with flat black and simply taped them on with black electrical tape, adjusted the comb so the fit was correct and went out and played until I found what was right for me. You can then buy the rib if you like and put it on or you can simply shoot the gun that way. Anyway, it came out simple and easy to do.
 
#8 ·
I've installed Add-A-Rib on 4 different guns for the same reason you mentioned, a more head up fit, but mostly to relieve neck pain. All my guns have adjustable combs also because I don't think you can raise the rib without properly adjusting the comb, unless you just get plain lucky. Head up and eyes level allow you can hold a lower gun on the trap which make target acquisition easier and faster. A rib isn't a complete solution though so if you get the tallest rib possible you may need a longer neck also if the comb won't go high enough for a proper mount. Both of my Beretta barrels have 3/4" tall ribs and I needed longer posts for the comb adjustment to achieve a proper mount. I put one on a friends BT and he's picked up 4 or 5 targets once he got it set up and dialed in. Same reason, a more head up mount, less neck pain.
My skeet gun doesn't have a high rib and I have problems shooting it since I modified my trap guns, but I don't shoot much skeet anyway
 
#9 ·
Changing the pitch changes the POI only if it changes the position of the eye relative to the rib, which it usually does not.

Adding a taller rib would require the comb to be raised or require you to shoot with your cheek above the comb, which would make it difficult to keep your eye in place relative to the rib during swing. Keep in mind that when the eye moves, so moves the pattern. This is something to keep in mind when deciding whether or not to practice mounting the gun to develop a consistent gun mount.

An alternative to adding height to the rib or installing a rib on a barrel without one, would be to lower the recoil pad adjuster. This is usually a good fix for shooters with longer than average necks so they can shoot with their heads and necks in a normal upright posture.

Pad adjusters mount between the recoil pad and the stock. They allow the recoil pad to be moved up, down, left, right or be rotated.

How tall are you?
 
#11 ·
If I put a rib on 2” taller that matched the current ribs pitch and then raised the comb 2” it should have no change to POI, right? It’s pretty interesting. So if they gave the new rib a 1/16” more downslope pitch I’d have to raise the comb that as well. I am going to have to make new comb posts.

The gun has a SoftTouch and the pad is a little lower than normal as it is. Right now I can mount the very bottom of the pad into the top of my shoulder and bring the stock up to my face where the comb is way under my check but I can look down the rib and see a 1” gap in the beads. I really want to see a fig8 in my alignment precheck plus I think it would be shooting too high that way. I’d have to bring that pad more lower into my shoulder to be more comfortable so I may be looking into pad adjusters even after a new rib. I do have a longer neck being 6’3” and I’ll include a current pic of the stock.

Thanks.
 

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