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Ruger M77 Rear Sight Removal

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USMC 0311 69 thru 77 View Drop Down
Optics GrassHopper
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    Posted: March/18/2009 at 15:03

I finally retired my .308 Ruger M77 RSI as my every day rifle and picked up a laminated stock M77 (not a MK II) light weight in .270. I didn’t want to remove the Redfield Wide Angle (TV style) scope from the RSI so I bought a 4 power wide angle with a 40mm objective at the gunshow earlier this month.

 

Problem is that with the standard rings the distance between the rear sight base and the front tip of the scope is a bare ¼ inch. The rifle is quite a kicker and I fear the objective bashing into the rear sight base and ruining the scope.

 

N.E.C.G. offers a neat peep sight for M77’s that uses the rear integral scope base on the receiver. My question is how hard is it to remove the Ruger rear sight base that sits on the barrel?

 

A local gunsmith says that they are screwed and sweat in place and that he would just mill a few thousandths off of it to get it out of the way. He says the removal will leave an unsightly appearance where the sight had been mounted to the rifle. I’d rather have it removed for a cleaner appearance and maximum clearance avoiding a re-blue if possible.

 

(I really don’t want to go to higher rings for a 40mm objective; the Mediums are a tad high as is.)

 

Anyone had any experience with Ruger rear sight base removal?

 

Thanks!

That you could carry 100X the Ammo if your Rifle were chambered in .22 Short means so very little to me, more so if it jammed every time you dropped it or were not able to clean it whenever you took 5
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Post Options Post Options   Thanks (0) Thanks(0)   Quote silver Quote  Post ReplyReply Direct Link To This Post Posted: March/18/2009 at 17:10
Originally posted by USMC 0311 69 thru 77 USMC 0311 69 thru 77 wrote:

  

Problem is that with the standard rings the distance between the rear sight base and the front tip of the scope is a bare ¼ inch. The rifle is quite a kicker and I fear the objective bashing into the rear sight base and ruining the scope.

 

 

A local gunsmith says that they are screwed and sweat in place and that he would just mill a few thousandths off of it to get it out of the way. He says the removal will leave an unsightly appearance where the sight had been mounted to the rifle. I’d rather have it removed for a cleaner appearance and maximum clearance avoiding a re-blue if possible.

 Thanks!

 
Why do you think that the scope will move if it is installed correctly?  How much as your current scope moved?
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USMC 0311 69 thru 77 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote USMC 0311 69 thru 77 Quote  Post ReplyReply Direct Link To This Post Posted: March/18/2009 at 17:49

I haven’t fired it with its scope mounted out of caution, using the week flip down sight (which broke while adjusting this A.M. by the way, when it rains it pours.)

 

I had a custom Sako in .358 Norma that had an old model sight fairly close to the front of the scope much like this one. To my surprise the Leupold 3.5 – 10 scope’s front element cracked and discharged its anti fog contents upon firing. An Engineering friend filmed it in high speed at the University of Arizona and we found out that the scope did not move as quickly as the rest of the rifle despite the solid mounting (Leupold rings and Redfield base, not the integral Sako mounts.)

 

As I recall it was within a few thousandths of an inch of the gap I am now experiencing.

 

I would rather avoid another such incident. It would only be annoying if it happened at my make shift range. More so if it happened when taking on a rabid cat here in rural Southern Arizona. I always try to prepare for the worst, (doesn’t always work.)

That you could carry 100X the Ammo if your Rifle were chambered in .22 Short means so very little to me, more so if it jammed every time you dropped it or were not able to clean it whenever you took 5
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USMC 0311 69 thru 77 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote USMC 0311 69 thru 77 Quote  Post ReplyReply Direct Link To This Post Posted: March/26/2009 at 20:08

A follow up on the close forward Scope clearence. Ruger finnaly returned my call and after a good deal of discussion, I got to talk to a legit firearms person. He stated that as far as he personally was concerned less than .25 of an inch of clearence was not appropriate for the .270 M77 Lightweight. He said that for the sake of saftey and potential damage a clearence of .33 (or greater) was prudent. A Tasco EXP (Oval) scope was mentioned as well as higher or offset rings.

 

I found a Tasco EXP scope in Phoenix but as it was new in the case and the rubber coating was already comming off in spots. That left me cold.

 

I finally succumed to switching the scope for one with a 32mm front objective (a Bushnell 1.5 - 4.5 X 32mm with a Circle X reticle.) It seems to me to be a big step down from the Leupold 4 power, but it does sight in lightning fast. Everything is a trade off...

 

I did note the comment from a few that a credit card is enough clearence for a good quality scope appropriately mounted. I respectfully disagree, having lost a good quality Leupold in the first incident. (I suspect this is for a barrel /scope clerance without a rear sight or rear sight base involved.)

 

I don't argue that everyone will have the same experience, only that I was unlucky enough when dealing with a too close scope to rear sight tollerance.

 

Thanks all!

That you could carry 100X the Ammo if your Rifle were chambered in .22 Short means so very little to me, more so if it jammed every time you dropped it or were not able to clean it whenever you took 5
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kickboxer Quote  Post ReplyReply Direct Link To This Post Posted: March/26/2009 at 20:13
I can't help with your issues, but DO thank you for your service and welcome you to the OT.  Salute
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Post Options Post Options   Thanks (0) Thanks(0)   Quote USMC 0311 69 thru 77 Quote  Post ReplyReply Direct Link To This Post Posted: March/26/2009 at 20:17

Hey Sincere Thanks KB! That's been a rare thing in my time!

That you could carry 100X the Ammo if your Rifle were chambered in .22 Short means so very little to me, more so if it jammed every time you dropped it or were not able to clean it whenever you took 5
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kickboxer Quote  Post ReplyReply Direct Link To This Post Posted: March/26/2009 at 20:35
I hear you, Gunny.  You will find you are appreciated here.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote decoy Quote  Post ReplyReply Direct Link To This Post Posted: April/11/2009 at 00:43
I'm just happy to see another person that likes the Redfield Widefield like me.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote magshooter1 Quote  Post ReplyReply Direct Link To This Post Posted: April/14/2009 at 08:05
I had an old MK I Ruger 77 and the rear sight was just screwed on not sweated at all.  I had to remove it mount the scope I wanted.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote USMC 0311 69 thru 77 Quote  Post ReplyReply Direct Link To This Post Posted: April/14/2009 at 15:24
Thanks magshooter! I was going on what I was told. I'll bring it in to Mr. Reid and ask him to give that a try. I'd much rather have the good 4X backed up by the N.E.C.G. peep, than this Bushnell variable and the barrel mounted sight...
That you could carry 100X the Ammo if your Rifle were chambered in .22 Short means so very little to me, more so if it jammed every time you dropped it or were not able to clean it whenever you took 5
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