Sporting Lad
Regular
- Location
- Vancouver Island
I've got a Redfield Revolution TAC (3-9x40) that's served me well across several rifles.
It worked successfully on my Savage 14(sold it) and on my Savage 10 whilst I waited for a Sightron precision scope to arrive. On the '10 I did the 'old school' bore-sight method and got on paper with my first shot, then had a happy time until I replaced it with the new scope.
I then decided to mount the Redfield on my M-14 using a CASM rail. Unable to eyeball a bore site the old way cos of the receiver's design, and unable to have it bore sighted with the 'stick this in your muzzle' thing, cos of the flash hider, I just plunked the scope onto the rings and torqued everything down, hoping to see a hole on paper when I got to the range. I did get on paper, and my windage was near perfect on my 25 yd sight in! But the hole was about 9" high. That means cranking down a lot of clicks. Well, I cranked and cranked until I hit bottom, but the next shots told me I still needed more.
I went home to reconsider how I'd mounted the CASM rail and how I should be able to drop the front a few MOA to gain the down clicks I needed. Meanwhile...
My AR wanted a scope, so I began looking for which scope to put on it.
While I was considering my options, I decided to put the Redfield onto my AR until I got the M-14's CASM rail dialed in. When I did the change-over I needed different (higher) rings. Now we come to the weird(er) part:
The way the AR is designed, it's easy to do the traditional eyeball boresight if you separate the lower, remove the bolt, and peep thru the barrel. I got that all lined up, then I looked thru the scope. The windage was aligned perfectly, but the centre of the reticule was still high compared to the bore. When I tried to crank it down I remembered that it was already down all the way from when it had bottomed out on the M-14--it would not go any lower in the taller rings either.
So "WTF"?
I don't have any reason to suspect that the scope is 'broken'. I'm feeling like there's something really basic that I've overlooked, but my brain is fried. I've mounted lots of scopes before.
Why is the scope doing the same thing on both rifles, each with different rail bases and rings?
The only thing I can think of is that I've never mounted this scope on either of these rifles before--when I mounted it on the Savage 10 I went directly to a 100 yd zero, and was hitting 1 MOA out to 300. With these other two I'm trying to bore sight at 25 yd. (actually it's only 40 feet, or ~15 yd in my back garden). Could that just be too close, as regards the parallax effect?
Should I be out at the range to do my bore sights?
Or am I just cranking the elevation turret down when I ought to be cranking it up? :0 ]
Help me if you can.
It worked successfully on my Savage 14(sold it) and on my Savage 10 whilst I waited for a Sightron precision scope to arrive. On the '10 I did the 'old school' bore-sight method and got on paper with my first shot, then had a happy time until I replaced it with the new scope.
I then decided to mount the Redfield on my M-14 using a CASM rail. Unable to eyeball a bore site the old way cos of the receiver's design, and unable to have it bore sighted with the 'stick this in your muzzle' thing, cos of the flash hider, I just plunked the scope onto the rings and torqued everything down, hoping to see a hole on paper when I got to the range. I did get on paper, and my windage was near perfect on my 25 yd sight in! But the hole was about 9" high. That means cranking down a lot of clicks. Well, I cranked and cranked until I hit bottom, but the next shots told me I still needed more.
I went home to reconsider how I'd mounted the CASM rail and how I should be able to drop the front a few MOA to gain the down clicks I needed. Meanwhile...
My AR wanted a scope, so I began looking for which scope to put on it.
While I was considering my options, I decided to put the Redfield onto my AR until I got the M-14's CASM rail dialed in. When I did the change-over I needed different (higher) rings. Now we come to the weird(er) part:
The way the AR is designed, it's easy to do the traditional eyeball boresight if you separate the lower, remove the bolt, and peep thru the barrel. I got that all lined up, then I looked thru the scope. The windage was aligned perfectly, but the centre of the reticule was still high compared to the bore. When I tried to crank it down I remembered that it was already down all the way from when it had bottomed out on the M-14--it would not go any lower in the taller rings either.
So "WTF"?
I don't have any reason to suspect that the scope is 'broken'. I'm feeling like there's something really basic that I've overlooked, but my brain is fried. I've mounted lots of scopes before.
Why is the scope doing the same thing on both rifles, each with different rail bases and rings?
The only thing I can think of is that I've never mounted this scope on either of these rifles before--when I mounted it on the Savage 10 I went directly to a 100 yd zero, and was hitting 1 MOA out to 300. With these other two I'm trying to bore sight at 25 yd. (actually it's only 40 feet, or ~15 yd in my back garden). Could that just be too close, as regards the parallax effect?
Should I be out at the range to do my bore sights?
Or am I just cranking the elevation turret down when I ought to be cranking it up? :0 ]
Help me if you can.
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