Ring height

[BadMatrix]

What ring height (picatinnay) is needed for this scope on a Ruger Gen2 American in .300BO?
DIAMONDBACK®TACTICAL 4-12X40
Code: VX-RS-DBK-10023-EE
MPN: DBK-10023
UPC: 875874008670

 

[kmoore]

Since no one seems to know the correct height. Have you thought of these ideas. I do them.
I buy 2 heights that I know it must be one or the other, when not sure and sometimes return the wrong size. I sit the rings on the rifle and not putting a torx or screwdriver to any screws.
Last week I was matching up a scope with a new to me 48 years old rifle that didn't come with scope or rings. I used shims to get the scope high enough the clear the hammer and rear sight. Used a caliper that showed .3 would be the shortest. Rings listed the lows at .4. So it saved me ordering med. and lows.

 

[BadMatrix]

[H3] DBK-10023[/H3]
I found this scope on Amazon. Same price. Then in the “people also bought section, they listed the vortex MEDIUM rings. Done.

 

[Mobuck]

Lots of shooters mount their scopes way too high. Then they have all sorts of problems caused by not having their eye aligned with the center of the scope. You should keep the scope as close to bore center as possible keeping in mind, the bolt has to clear the eyepiece. There may also be a point of interference between front bell and front of base on some applications.
Determine the distance from the outer diameter of the front lens scope's to center. Estimate where the front bell of the scope will be when mounted. Lay a straight edge on top of the bases and measure up the determined distance from that point on the barrel plus a wee bit for clearance. Find rings that accommodate this distance. It might be easier to draw this out on paper so you have a visual interpretation.

 

[gunzo]

When there's a picatinny rail & a 40mm objective, even an adjustable objective, low rings will do in most brands with the exception of the original 2 screw Weavers.
Stacking coins on the rail & setting the scope on them is the easiest. Measure the thickness of the coin stack or know how thick each coin is & how many that's needed for the scope to clear. Then, the mfrs. list the heights of their rings.

 

[kmoore]

When there's a picatinny rail & a 40mm objective, even an adjustable objective, low rings will do in most brands with the exception of the original 2 screw Weavers.
Stacking coins on the rail & setting the scope on them is the easiest. Measure the thickness of the coin stack or know how thick each coin is & how many that's needed for the scope to clear. Then, the mfrs. list the heights of their rings.

I like your using coins stacked to get the height. I will use that method next time.

 

[the_leper_colony]

Related topic - some folks might consider it a waste of money, but I will often pick up extra scope rings if I see them at an attractive price, on sale or clearance. I focus on brands/styles that I've used before & like, but it's also an opportunity to try something new or different if the price is right. Having extra rings "on the shelf" often lets me try several options if I'm mounting a new scope, or moving a scope from one firearm to another: more often than not, I have something that fits/works well. And on occasion, I've been able to offer rings to a friend who needs them.

As always FWIW, IMHO, YMMV, etc.

 

[tomsza]

When there's a picatinny rail & a 40mm objective, even an adjustable objective, low rings will do in most brands with the exception of the original 2 screw Weavers.
Stacking coins on the rail & setting the scope on them is the easiest. Measure the thickness of the coin stack or know how thick each coin is & how many that's needed for the scope to clear. Then, the mfrs. list the heights of their rings.

I have a 34mm barrel scope going on a RPRC in 6.5cm. Using the coins measuring method, I have a minimum height required of 1.26" (rail top to barrel center). Vortex sells a 1.26" high scope ring. They also sell a 1.45" high scope ring. This is my first time matching a scope to a rifle. What would be the advantages, or disadvantages of using the 1.45" ring height?

 

[dead eye kenny]

when i bought my scope a 3.5-10x40 leupold i emailed leupold and they reccomended medium height rings. im mounting on a
400 legend gen 2 predator

 

[gunzo]

I have a 34mm barrel scope going on a RPRC in 6.5cm. Using the coins measuring method, I have a minimum height required of 1.26" (rail top to barrel center). Vortex sells a 1.26" high scope ring. They also sell a 1.45" high scope ring. This is my first time matching a scope to a rifle. What would be the advantages, or disadvantages of using the 1.45" ring height?

First ya have to have enough height for the scope to clear everything. After sufficient clearance, 30 to 40 thousandths of an inch or so, a millimeter, any more is a waste. The closer the centerline of the scope to the CL of the bore is just the best way in most applications.

 

[s4s4u]

Cheek weld matters, comfortable cheek weld. Not everybody's cheek is created equal. To say it is best to mount the scope as low as possible isn't always right, if you can't comfortably get behind it. There is nothing wrong with a high mount, provided you get a solid cheek weld, and if you subscribe to the PBZ method of zeroing, a higher mount will extend that distance a little. If you shoot prone a lot, you might find a lower scope height to be more comfortable and easier on the neck. Sitting at a bench or standing it really isn't an issue, again, as long as you have a good cheek weld.

 

[tomsza]

I tried the 1.26" and it was too short for my head position. Cheek pad was all the way down and felt uncomfortable. Ordered the 1.44".