Scope Questions - ?

westcoaster

westcoaster

Joined
Jul 26, 2010
Messages
129
Thought I would post this in as many places as possible to try and get as much info as possible...

I have a B&L Balvar 2.5x5 scope on my 30-06 I have a few questions about. It is an older scope, old but good technology. Elevation and windage adjustments are made on the base mounts. Here goes:

1 - I think each mark on the bases represent 1 MOA so at 100 yards, three inches high would represent a 3 increment point of impact adjustment. To get in the right zone I am going to start my sighting process, (after bore sight), at 25 yards. So would 3 inches high at 25 yards mean a 12 increment adjustment? I'm not sure if there is even room for that kind of movement.
2- Does anyone know how to reset or zero out these scopes?
3 - When sighting in a rifle do the adjustment knobs needs to be fully tightened down between each shot, or can they be let semi tight?

Any advice on this scope would be greatly appreciated.

Cheers,
 
It depends upon the load you are shooting and the gradiant you are shooting from and at first.

When you have that you can start on paper targets and work out your own maths.
 
You might want it around 3" high at 25 yards to get it somewhere near center at the ranges you'll actually be shooting at. Do you have any information about the trajectory of the load you're using? Anyway it's too early to even start worrying about running out of adjustment range.
 
Cougar Allen said:
You might want it around 3" high at 25 yards to get it somewhere near center at the ranges you'll actually be shooting at. Do you have any information about the trajectory of the load you're using? Anyway it's too early to even start worrying about running out of adjustment range.
Click to expand...

I will be shooting a 150 grain factory loac. So I have found that the POI will be about 2.7 inches high at 100 yards. I am wondering what would be best, I guess I have to think about what kind of hunting I am going to do. Shoot tight groups at 100 yards 2.7 inches high, or tight groups as close to the center as possible.
 
The main problem is that it's not good technology. You're using a set up that's at least 50 years old. The reason it never carried over is that they found it does not retain zero as well as the scopes with internal adjustments. Also,the optics have gone thru two genenrations of progress since those lenses were ground. Do yourself a favor, spend the money and get a decent scope set up.
 
eisman said:
The main problem is that it's not good technology. You're using a set up that's at least 50 years old. The reason it never carried over is that they found it does not retain zero as well as the scopes with internal adjustments. Also,the optics have gone thru two genenrations of progress since those lenses were ground. Do yourself a favor, spend the money and get a decent scope set up.
Click to expand...

So says you. If my dad can hunt his whole life with it and have no problems so can I;). As far as I know the issues of loss of zero came in when the tube was swapped between different rifles with bases on each, not in the adjustments. This one is staying put so it's good to go.

Cheers
 
I am in agreement with Eisman (#6) here.

Unless your 30.06 rifle is a "period piece" and you want to retain authenticity, a modern internally adjusted scope will be far more reliable in all conditions.

There are hundreds of scopes out there suitable for all uses and budgets, and a good scope can add amazing accuracy for most shooters.
 
BlueyM said:
I am in agreement with Eisman (#6) here.

Unless your 30.06 rifle is a "period piece" and you want to retain authenticity, a modern internally adjusted scope will be far more reliable in all conditions.

There are hundreds of scopes out there suitable for all uses and budgets, and a good scope can add amazing accuracy for most shooters.
Click to expand...

Ya I am going to spend some time at the range with it this weekend seeing what I can do. I may end up upgrading.

Cheers
 
You must log in or register to reply here.
Back
Top