Do rifles eat scope adjustment?

G

GSoD

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So I have a Rem700P in .308.

It shoots 175 SMKs at 2690fps.

According to the ballistics programs I need about 360" of elevation from my 200 yard zero. This was confirmed as correct in the field.

I have a Bushnell 6x24 4200. It has a total adjustment from top to bottom of 190 1/4" clicks. It is mounted on a Near -25MOA base with low TPS rings.

My 200 yard zero has me 56 1/4" clicks off the bottom of the scope and 134 1/4" clicks from the top.

Now the problem is of course, I need 144 1/4" clicks to reach my 1000 yard goal. I'm at least 10 1/4" clicks away even if it was assumed to be desirable to shoot with the scope maxed out.

So what do you figure?

a) Dummy! You must have installed it wrong because those figures don't add up.
b) Try and find a -30 MOA base)?
c) Ditch the scope and get one with more adjustment (cost is an issue with me).
d) Use Burris Zee rings with inserts to gain a little extra MOA?
e) Do what I did last year to compensate and dial it in close and use my mildots to make up the difference?

I'm trying to solve this before the shooting season starts in earnest.
 
Your math is correct, a hard way to do however. I converted your clicks to moa and it worked out exactly as you came up with.

Shimming a rail is a bad plan as it puts uneven pressure on the action and can bend the rail.
The Burris rings are junk.
A better scope would be the best option, but not if the $$ is not available, so least expensive opton would be to go plus 40 moa rail and realize you may not be able to zero 100% at 100 yards, but you should be close.

I needed 32 MOA with the 175 SMKs to get to 1000 yards, only 30 MOA shooting 208 Amaxs. With the 5.5x22 NXS having 100 MOA a plus 20 rail is tons.
 
Option "d" may or may not be fruitful.
Heard through the grape vine, that "Z" rings are not as good, as they say they are.
Click to expand...

I've been using the Z rings for years and have used them out to 2000 yds. Are they the best rings out there .... probably not but the ability to add in elevation is really nice and the plastic inserts mean no scope damage EVER, which was what drove me to them in the first place.

I once bought a new set that had rust on them. I contacted Burris with pics and they sent me a new set and didn't even ask for the damaged set back. No questions asked, no issues. I don't think anyone can quibble about that level of customer service.
 
What's wrong with the Burris rings? They seem to hold my scope in place on a 300WM no problem. I used the inserts so that I have full upward adjustment range from 100 yards onward.
 
You don't really want to be using 100% of your UP adjustment. If you do, look through a collimeter an move the wind back and forth and see what happens.


if it was my rifle, i would install Burriz Z rings in a flash. I use them and have had no problems.

I would also switch to the berger or lapua and Sierra (in that order) 155 gr bullet. Try all three at 300 yards and test for groups. Less elevation and better wind bucking.
 
I'm thinking the most obvious answer for me right off would be "F" switch to 155 gr Sierra's. (45.5 gr / Varget behind them)
Everyone else reachs 1000 with no prob. with 20 min. mounts.

Or consider answer "A" and redo the mounting job and math, laff.

M.
 
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