Scope base question

[jtv3062]

We use beer and soda cans but they are not very thick. This requires quite a few shims to get any slope.
Burris sells clear plastic shims that you can get in different thicknesses. I tend to get the thickest ones they make. They come in packets of 10-20 shims and are very cheap.

You shim the bases to get "slope"? You're going to bend your scope doing this. The stupid gunsmith did that to a scope I bought second hand and that's what I now have. I only discovered the bent tube after I removed the rings that came with the scope. The gunsmith used his business card as a shim.

[LynnJr]

We use beer and soda cans but they are not very thick. This requires quite a few shims to get any slope.
Burris sells clear plastic shims that you can get in different thicknesses. I tend to get the thickest ones they make. They come in packets of 10-20 shims and are very cheap.

[Horrendo Revolver]

Never measured them. I've got a big stash of shims Leupold sent me when I mounted scopes at Cabela's. Before that I had a stash of homemade shims. Some were from beer cans and some were from soda cans. Beer cans are thicker so that gives you two thicknesses of shims to work with.

[jrpowell3]

I shim bases if elevation adjustment is needed. You can make them out of beer cans.

I have plenty of those....how thick are beer cans?

[Horrendo Revolver]

I shim bases if elevation adjustment is needed. You can make them out of beer cans.

[jrpowell3]

So, new question regarding bedding the scope base.

Are the shim kits any good or should I just do the JB Weld thing shown in one of the videos above?

[jrpowell3]

I used the site MEGSDAD posted, and I should have approximately 3/8" of an inch clearance between the objective bell and the barrel(including the scope cover) using .823" rings(Badger Ordnance Standard Height).

[jtv3062]

Another easy way to figure out what height rings you need is to stack pennies on you rail front and back until the bell is no longer touching the barrel. Measure the the stack of pennies and add half of the diameter of the scope tube.

[jrpowell3]

That's good knowledge. Looks like I can go smaller than the 1.03" rings.

[MEGSDAD]

This might help.

http://www.mil-rad.com/scope_ring_calculator

[jrpowell3]

If the wide end of the scope is 2.03" wide, what height rings should I go for? I'm looking at 1.125" height rings, but I can also get 1.03" rings, but I'm not certain.

[LynnJr]

I haven't noticed that before, I was always in the mindset anything touching the barrel could have negative effects. Learn something everyday.

Here is a picture of a mirage shield on my 1000 yard 6 Dasher and next to it is the bottom of another shield showing the Velcro dots that hold in place on the barrel.
If you look at the muzzle you will see a Hoehn/Harrell's tuner which weighs 8.5 ounces as you see it. Any time you add weight to the muzzle you are dampening the height of the barrels whip which broadens the tuning window. Adding a heavy front sight or a heavy muzzlebrake may affect your previous load but it takes about 4 ounces on a #17 contour or larger barrel to produce recognizable results. If you go past 14 ounces you will find accuracy affected in a negative way because the barrel will be pointing on a downward slant when the bullet leaves the muzzle.
If you look at my earlier post the gun sporting the polished aluminum stock has a tuner weighing more than 3 pounds but the barrel is 1.450 straight cylinder.

[JMP]

The reason I'm asking is because, from my time in the marine corps, my shooting posture has definitely molded itself to the higher up sights of the m16, so I noticed when I was holding some bolt guns the other day that when I shouldered the weapon, my line of sight was not parallel to the barrel.

I think I might have to adjust my posture to adapt to the different sight level.

I'd go with what's comfortable for you. Generally, long distance shooters will have high bore height since there may be a large cant in the base, avoids mirage from the barrel, and you don't lose that much if your targets are all far. Tactical shooters will want minimal bore height as they shoot at all ranges and high scopes can be a bit goofy for short and intermediate ranges.

[jrpowell3]

When the gun weighs 60-100lbs and sits on a mechanical return-to-battery rest, there is no need to touch anything but the trigger.
When you shoot a gun like that, they stock is shaped differently.

When you shoot a gun with your head on the stock, you want the scope as close to the barrel as possible.

That weighs the same as a M2HB with the tripod... So, I think medium rings for the scope I got it'll give me about an 1/8" clearance from the bottom of the scope to the bottom of the ring, depending on the model

[ar15barrels]

No stock weld? Interesting. But I guess with a scope all you need is proper eye relief and no scope shadow

When the gun weighs 60-100lbs and sits on a mechanical return-to-battery rest, there is no need to touch anything but the trigger.
When you shoot a gun like that, they stock is shaped differently.

When you shoot a gun with your head on the stock, you want the scope as close to the barrel as possible.