40x scope mount holes not in line with barrel?

S

seabass25

Guest
I was shooting a 40x with a free floating barrel yesterday. We mounted an EGW picatinny scope base which did give a little trouble going on the rifle. After the scope was mounted, I noticed the scope was pointed slightly to the right and the barrel a little to the left. When shooting, all the points of impact were to the left and I ran out of adjustment on my scope. Has anyone encountered scope mount holes that were not inline with the barrel? We swapped over a badger ordanance mount and it too was pointed to the right in reference to the barrel. We mounted the EGW on another 40x without any problems. Is it possible to have a bent barrel or scope mount holes not in line with the barrel? I'm new to all this and appreciate any input.
 
seabass25 said:
After the scope was mounted, I noticed the scope was pointed slightly to the right and the barrel a little to the left. When shooting, all the points of impact were to the left and I ran out of adjustment on my scope. Has anyone encountered scope mount holes that were not inline with the barrel? We swapped over a badger ordanance mount and it too was pointed to the right in reference to the barrel. We mounted the EGW on another 40x without any problems. Is it possible to have a bent barrel or scope mount holes not in line with the barrel? I'm new to all this and appreciate any input.
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In the order you asked: yes, and yes. Welcome to the PITA club, and sorry you've joined too. But it happens...:(

You could send the rifle back to Remington, and take your chances that they would send you another (better) rifle, or they might not. It can't hurt (much) to call them and inquire.

Or, you could use Burris Signature rings with the eccentric inserts, to move your scope in alignment with the bore. You want their 'Zee' style, to fit the rail mounts you mention.
 
for the 40x bases you can only use bases for short action. if you have an alignment problem, windage adjustable for 700 short action or burris signature will correct up to 40moa.if you buy one of the bases that are windage adjustable weaver and leuopold bases do not require shimming, some bases such as redfield may require shimming. if you forced the picitinny rail to fit and then fix with a windage adjustable base your action may have so much stress that accuracy will be affected. it's best to remove that rail and not force it on.
 
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seabass check and make sure if you bought from cmp that someone didn't modify a standard barrel stock to fit a heavy barreled rifle. one way to tell are the front tuning screws missing or ground down.if not then check to see if the stock is warped these stocks and rifles have been in storage for 50 years, it could be that free floating the barrel or backing those tuner screws out or removing them completely may solve your problem.you should be able to slide a business card the length of the barrel to the action.
 
Actually very common to have the holes drilled off center on the CMP 40X's.
I have three that have that same problem.
I went to the Weaver bases with the Burris Sig Z rings and used the off set inserts and they come out just fine.
Ken S
 
I have a civillian 1963 40X that uses up all but about a quarter turn of windage. It was NIB when I got. Just machined wrong. It does shoot great though!
 
I have an xp100 action that is more than 23" off to the right at 100 yards, factory drilled and tapped. 6ppc barrel on it, first time I shot it was at 100 yards with hand loads thought I really messed up in loading them, till one of the other guys ( just practice not a match) said I was punching a nice group in his target 2 ft away.
 
It’s not a flaw, it’s an Opportunity?

Add me to the Remington offset group. Mine was a factory new 700 (a little off topic and caliber, but still…).
20” left, 18” down from scope optical zero.
Sent it back to Remington with, what I though, were clear instructions.

Remington re-crowned the barrel. Rusted the bolt. And sent it back.
Still shooting nearly 2 feet off the scope zero.
Shims/JB weld and Leupold base/rings did the trick for me.

Love that quality control,
Regards,
Jeff
 
Jeff, the only thing in common with your 700 and the 40x is the remington name. your 700 is a completely in house built rifle start to finish. the 40x receiver is manufactured off site, drilled and taped assembled and shipped to the remington factory.from it's inception in 1955 to present the receivers of the 40x are outsourced always was always will be, often imitated and attempts to clone. from the casual shooter, position shooter and bench shooter in our lifetime our grandkids lifetime their will never be another factory mass produced rifle that will ever compare to the 40x it is the last of those mfg. rifles.
 
This problem has been around a long time

This is not the first post that refers to the problem with Remington 40-X's being off center. Please refer to my post at a earlier time: http://benchrest.com/forums/showthread.php?t=67178

The problem is with both the CMP guns made back in the 60's, and probably current production from the custom Gun shop. My 1999 XRBR has the problem. What amazes me is the fact that Remington has never corrected the problem as it has existed for over 50 years.

Ed
 
Another option

is to set it up in a mill, find the closest left and right line to the bore that will match the holes and redrill and tap them to #8-40. That will give you a good lineup and all you have to do is open up the holes on the base.
 
Martin

martin hammond said:
Jeff, the only thing in common with your 700 and the 40x is the remington name. your 700 is a completely in house built rifle start to finish. the 40x receiver is manufactured off site, drilled and taped assembled and shipped to the remington factory.from it's inception in 1955 to present the receivers of the 40x are outsourced always was always will be, often imitated and attempts to clone. from the casual shooter, position shooter and bench shooter in our lifetime our grandkids lifetime their will never be another factory mass produced rifle that will ever compare to the 40x it is the last of those mfg. rifles.
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You must not have heard of Anschutz 54's. Mass produced, higher quality, sold the world over, and hold 100's of records more than 40X's.
 
J Pappas said:
You must not have heard of Anschutz 54's. Mass produced, higher quality, sold the world over, and hold 100's of records more than 40X's.
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James, maybe that's what the Germans might say but that's what this American is saying and I'm not changing my story.:)
 
ehkempf said:
This is not the first post that refers to the problem with Remington 40-X's being off center. Please refer to my post at a earlier time: http://benchrest.com/forums/showthread.php?t=67178

The problem is with both the CMP guns made back in the 60's, and probably current production from the custom Gun shop. My 1999 XRBR has the problem. What amazes me is the fact that Remington has never corrected the problem as it has existed for over 50 years.

Ed
Click to expand...

Ed, this all got started because someone told a story, then two people told a story then four and so on. that story is false. the first person that told the story put the wrong bases on. not that anything man works on can't have problems but the story you keep telling is flat out wrong. I have one of those rifles here right now, I was told it was milled wrong. looked at the bases there's the R in a circle for redfield. measurements for the redfield are .140 offset and should be .160. these bases have been on this rifle for many many years and the steel has not shrunk, they were made that way.
 
Martin

martin hammond said:
James, maybe that's what the Germans might say but that's what this American is saying and I'm not changing my story.:)
Click to expand...

Just the other day you pointed out, " german engineering wins out again", remember that? And AGAIN in this case it does too. Hey, My 2 best rifles are 40X's. Its just hard for me to say how great their quality is, I have owned too many of them that were real dogs.
 
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James, I do give them credit and must admit they got the barrel contour figured out long before us. and with as many shooters and gunsmiths we have building custom rifles and changing barrels it should never been them to figure it out before us.
 
Martin

When I mount a scope on a 40X and it is pointed one direction and the barrel is pointed in the opposite direction, I don't consider that a sign of quality. When the barrel looks like it was chambered with a twist drill I don't consider that a sign of quality. 40x's have a cult following but they are not great high quality rifles as you say. Classic American rifles would be a better choice of words.
 
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James, sucks to be you with a run of bad luck on these 40x's. everyday I shoot these I'll be thinking boy am I glad I didn't have James's bad luck.
 
warpage?

Howdy!
Could the misalignment be from the holes being drilled and tapped before the heat treatment, and that there is enough warpage to affect the alignment?

Greg
 
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