Because I am going on a cropping shoot after Thanksgiving I am putting a new Trijicon 3x9 on the 416. the problem is that I have run out of elevation adjustment and am still 4 inches low at 25 yards--.

What is acceptable as shim material for the rings?Am using QWR rings and bases so would rather shim rings instead of bases.

Thanks

Sean,

I had the same problem with my CZ-550 in 416 Rigby after having some customization done by Match Grade Arms, but my issue was while using a Leupold 1.75X6. I switched to a Trijicon 1.25X4 and had plenty of elevation to make the necessary adjustments.

Regardless, I shimmed under the rings while using the Leupold prior to making the switch. I took an old 458 WM case and cut a piece off the end with a dremel tool. Then cut it so that I could hammer it flat, measured to fit exactly under the rings and on top of the integral base of the CZ rifle. That worked very well and since I had cut it to fit, I was able to remove and replace the scope without issue and it always returned to zero. Prior to that, I tried with a smaller sliver of brass but because it wasn't cut to fit perfectly, I couldn't be assured of getting it back into the exact place for return to zero.

Good luck and I hope that helps you.

I had the same problem with a CZ550.

I just used aluminum foil and put the shim in the bottom portion of the rings. Did several layers and it worked fine. I have also heard that folks will use a small piece cut from a Coke or beer can and that works.

Thanks guys

will experiment and report back

Sean

Brownells has complete scope shim kits available.... I have them here as well............

http://www.brownells.com/searc...cope+SHims&ksubmit=y

http://www.brownells.com/gunsm...him-kit-prod914.aspx


Michael

Michael

Went to Brownells link --to many options--which do you use?

and are these shims for the bases or rings?

Sean

I have the Brownells kit with the various different shims..... They work under the base, remove the base, and you will find various thickness shims with the right hole measurements, or can drill your own too.... As I recall, shooting low, you shim the rear base.....

4 inches at 25 yds, you need at least a couple of the thickest shims to bring that up... Might possibly also need some slightly longer screws for the base......

M

When you shim the base, rear in your case, keep in mind that the rings are likely no longer aligned. It is good practice to shim the base and then lap the rings after shimming. Thus aligning the axis of the rings. This will help keep you from denting the scope tube.

Jeremy

Above is an Excellent point!

Sean
I believe you have an action that has the barrel threads running out of line with actual bore of the action, not so uncommon. The best way to correct this issue is to install a Leupold LONG RANGE 1pc base on the rifle as it will give you the needed correction. F--k the shims.

D'Arcy brings up the best solution. Scope bases can be bought as either 10 and 20 MOA with the correction built into the base (i.e. a slight taper is milled into the base). No issues with ring alignment etc. These long range bases are 1 piece units.

Since you are completely out of elevation 20 MOA is the way to go.

Leupold doesn't make a long range QRW base in 20 MOA (not that I can see anyway). Warne makes one though.

Jeremy

Thanks for all the help, esp D'Arcy and farbedo-

since I really want to use this rifle on a hunt Thanksgiving I am going to go back to the 1.5x4 trijicon it wore in africa. Then after hunting season I will sort out why it wont work with this scope. I didnt even take the bottom of the rings off the bases when I switched scopes, just the top piece if the rings.

The long range bases seem like a potential answer, I would like QD if possible. My concept for the qd rings is to have a two scope set-up, with a 1x4 range scope for DG and a 3x9 range for PG and general hunting I love this little 416 and its rapidly becoming my Go To for everything rifle. Given Saeeds experience and others thoughts, if I can only use one one scope I may work with the 3x9.

Very few elephants in Central TX-dang it. It would be ideal for rino though.

Thanks again everyone-

SSR

Why not get the 20 MOA base and some Warne QR rings for picatinny/weaver rails? A set for each scope and you're good to go with the setup the way you want it...

I had the same problem with an air rifle scope shooting 6" high at 15 yards. Being in construction I has some HVAC tape which has fiberglass reinforcement. It is easy to cut and it took me three layers.

soda can shim might be easier to work with...

quote:

Originally posted by Idaho Sharpshooter:
soda can shim might be easier to work with...

But not better...

Nice try Goat-Scrotum-Face.

quote:

Originally posted by MeetWhistle:

quote:

Originally posted by Idaho Sharpshooter:
soda can shim might be easier to work with...

But not better...

Nice try Goat-Scrotum-Face.

Go gentle Rich.

quote:

Originally posted by MeetWhistle:

quote:

Originally posted by Idaho Sharpshooter:
soda can shim might be easier to work with...

But not better...

Nice try Goat-Scrotum-Face.

WTF???

quote:

Originally posted by MeetWhistle:

quote:

Originally posted by Idaho Sharpshooter:
soda can shim might be easier to work with...

But not better...

Nice try Goat-Scrotum-Face.

Two posts and you are starting trouble on someone else's topic?

Please take personal stuff somewhere else-

I am not a mod-but am OP

Thanks

Well shimming is not the best practice I know of...

I usually have my actions surface ground and the bases hand fitted on a DGR. that keeps all square to the world, so to speak. It is the best option and scopes return to zero much better.

On rare ocassions the barrels are threaded improperly and thats a problem. It can be fixed by using a Weaver scope that has miles of adjustment, but thats a second rate fix also. A new barrel is the best option.

I always set my scope adjustments at the center of adjustments, such as a Leupold you have about 5 turns give a take a bit, so 2.5 back is center of the scopes focal plane.. Using a bore sighter, I try and keep those adjustments in the center of the scopes focal plane, so that I never have to make much of an adjustment to sight in my gun. This helps on return to zero more than anything else, and helps in the accruacy of your rifle and its ability to hold its zero.

This practice is a must with most any rifle I own, and sometimes the receivers are square to the world but I wouldn't take that for granite.