Remington 513T trainer issue

Warpspasm · Nov 23, 2021

I picked up a Remington 513T military trainer that is equipped with a blade front and Redfield 75 rear aperture sight. At 30 yards the rifle shoots a couple inches left with the rear sight clocked all the way to the right. I think it has the right sight base from looking at photos online, but the sight obviously runs out of room before it gets where it needs to be.

Any aperture users or 513T aficionados have any ideas?

Thanks.

John from MD · Nov 23, 2021

Warpspasm said:
I picked up a Remington 513T military trainer that is equipped with a blade front and Redfield 75 rear aperture sight. At 30 yards the rifle shoots a couple inches left with the rear sight clocked all the way to the right. I think it has the right sight base from looking at photos online, but the sight obviously runs out of room before it gets where it needs to be.

Any aperture users or 513T aficionados have any ideas?

Thanks.

Is the sight mounted in a cutout on the left side of the receiver? If mounted correctly, there is a block that attaches to the receiver with two screws and the big screw of the sight attached to the block. If there are any additional holes on the receiver, someone may have used the wrong block.

Here is a link to the correct sight.

https://www.google.com/url?sa=i&url...ved=0CAgQjRxqFwoTCJiZ3PfHr_QCFQAAAAAdAAAAABAP

Warpspasm · Nov 23, 2021

John from MD said:
Is the sight mounted in a cutout on the left side of the receiver? If mounted correctly, there is a block that attaches to the receiver with two screws and the big screw of the sight attached to the block. If there are any additional holes on the receiver, someone may have used the wrong block.

Here is a link to the correct sight.

https://www.google.com/url?sa=i&url...ved=0CAgQjRxqFwoTCJiZ3PfHr_QCFQAAAAAdAAAAABAP

My rifle is the older model military trainer (1943 I think) that uses a Redfield 75 peep sight. A thinner base would definitely be better, but I think the base is correct, it's just that the sight runs out of travel.

John from MD · Nov 23, 2021

I think that base is too thick. You can either look for another on ebay or have that one thinned down.

JoeRinMD · Nov 23, 2021

I went through this a looooooong time ago when I bought a pair of 513T rifles from the CMP, along with a Winchester 52C and a Winchester 75-T. The correct rear sight should be marked RT, and the base marked 75-RT. Here's the original Redfield chart.

JoeR

Warpspasm · Nov 23, 2021

JoeRinMD said:
I went through this a looooooong time ago when I bought a pair of 513T rifles from the CMP, along with a Winchester 52C and a Winchester 75-T. The correct rear sight should be marked RT, and the base marked 75-RT. Here's the original Redfield chart.

JoeR

Excellent resource.

I just pulled mine and unfortunately, due to wear I don't see anything on the base that looks like a marking. On the rear sight, the only thing I see is what appears to be HW, which is scratched in. I would assume that might be what is listed as HW on the chart you attached.

JoeRinMD · Nov 24, 2021

Warpspasm said:
Excellent resource.

I just pulled mine and unfortunately, due to wear I don't see anything on the base that looks like a marking. On the rear sight, the only thing I see is what appears to be HW, which is scratched in. I would assume that might be what is listed as HW on the chart you attached.

That probably explains the issue...your sight is for a Winchester 75, rather than the model specific to the Remington 513-T. I'm not sure of the proper term, but the crossbar that holds the aperture isn't the right length to put the sight over the center of the bore, so you're using up all the windage travel.

It's been almost 15 yrs, but the person who put together the various parts I needed for my CMP 513-T rifles was a gentleman named Phil Scholl. He had worked at Redfield in Denver and when they closed, bought up a bunch of their parts. A recent number is: 303-552-8542. Another potential resource is Ken Bean from York, PA. He has a table to many of the larger local gun shows as "The Sight Man". His number is: (717) 755-9070.

Even though my vision is terrible and much better served by optical sights, I've always had a real affinity for old school aperture sights. Using the resources above, I put together several Redfield sights on both lever and bolt guns. If you need any information from my rifle, I can check out the rear sight and measure the rear sight mounting block to get a dimension.

Good luck!

JoeR

toppkatt · Nov 24, 2021

A friend of mine, who dealt with Ken Bean often says he died.

Warpspasm · Nov 24, 2021

JoeRinMD said:
That probably explains the issue...your sight is for a Winchester 75, rather than the model specific to the Remington 513-T. I'm not sure of the proper term, but the crossbar that holds the aperture isn't the right length to put the sight over the center of the bore, so you're using up all the windage travel.

It's been almost 15 yrs, but the person who put together the various parts I needed for my CMP 513-T rifles was a gentleman named Phil Scholl. He had worked at Redfield in Denver and when they closed, bought up a bunch of their parts. A recent number is: 303-552-8542. Another potential resource is Ken Bean from York, PA. He has a table to many of the larger local gun shows as "The Sight Man". His number is: (717) 755-9070.

Even though my vision is terrible and much better served by optical sights, I've always had a real affinity for old school aperture sights. Using the resources above, I put together several Redfield sights on both lever and bolt guns. If you need any information from my rifle, I can check out the rear sight and measure the rear sight mounting block to get a dimension.

Good luck!

JoeR

Joe, is your rear sight the one I need for a Remington 513T? If so, I would very much appreciate the measurement of the crossbar that holds the aperture as well has the thickness of the mounting block. Thanks!

toppkatt said:
A friend of mine, who dealt with Ken Bean often says he died.

Sorry to hear that. I wonder if anyone else took over his business.

mawkie · Nov 24, 2021

-If you look at the great top view photo of the sight you'll see that the screw of the windage index is offset to the left, not centered as you would like. The base is definitely too thick.

slsc98 · Nov 24, 2021

JoeRinMD said:
Here's the original Redfield chart.

JoeR

Warpspasm · Nov 24, 2021

mawkie said:
-If you look at the great top view photo of the sight you'll see that the screw of the windage index is offset to the left, not centered as you would like. The base is definitely too thick.

I think you're right! I guess it's time to break out the file.

toppkatt · Nov 24, 2021

Too bad you can't find the thickness differences between the bases. That would make it much easier.
Good luck!

Augie · Nov 24, 2021

Took the base off my 513T commercial and it is .310 thick, measured the with of the sight and it is about .845, could not find any markings on base or sight, maybe this will help.

Warpspasm · Nov 24, 2021

Augie said:
Took the base off my 513T commercial and it is .310 thick, measured the with of the sight and it is about .845, could not find any markings on base or sight, maybe this will help.

I think you must mean the width of the sight is 1.845. Mine measures 1.94, so they're probably the same. My base measures .310, so that's the same too! What the heck?? Why is mine off center when it's mounted?

When yours is mounted on the rifle, is the screw of the windage index offset to the left the way mine is?

toppkatt · Nov 24, 2021

Warpspasm said:
I think you must mean the width of the sight is 1.845. Mine measures 1.94, so they're probably the same. My base measures .310, so that's the same too! What the heck?? Why is mine off center when it's mounted?

When yours is mounted on the rifle, is the screw of the windage index offset to the left the way mine is?

Well, my first question to Augie is, Have you shot it and got it sighted in yet? If just a safe queen...

JoeRinMD · Nov 24, 2021

Warpspasm said:
I think you must mean the width of the sight is 1.845. Mine measures 1.94, so they're probably the same. My base measures .310, so that's the same too! What the heck?? Why is mine off center when it's mounted?

When yours is mounted on the rifle, is the screw of the windage index offset to the left the way mine is?

My rifle is at my son's house, so I'll check it out sometime over the weekend. However, from the above, I'd say a 0.10 inches is significant...almost 1/8th inch. Over the long sight radius that would make a large difference at the target.

JoeR.

Warpspasm · Nov 24, 2021

JoeRinMD said:
My rifle is at my son's house, so I'll check it out sometime over the weekend. However, from the above, I'd say a 0.10 inches is significant...almost 1/8th inch. Over the long sight radius that would make a large difference at the target.

JoeR.

I did a quick measurement with a digital caliper. Anyway, if my sight were wider by .10, than that would make it shoot farther to the right instead of the left because it would have more length for windage travel to the right.

Augie · Nov 24, 2021

Warpspasm said:
I think you must mean the width of the sight is 1.845. Mine measures 1.94, so they're probably the same. My base measures .310, so that's the same too! What the heck?? Why is mine off center when it's mounted?

When yours is mounted on the rifle, is the screw of the windage index offset to the left the way mine is?

That should have been width. I’ll have to pull the Unertl of the rifle and take some pics this afternoon, can’t put the sight on with the scope on.
Is it possible your front sight is bent? I have a globe on mine so can’t measure.

JoeRinMD · Nov 24, 2021

slsc98 said:

Thanks, but it was something I had remembered seeing from a long time ago. I just searched to find it again. Hopefully it won't disappear into the interweb ether.

JoeR

Remington 513T trainer issue

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