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Rifle question: Need help please
#7322074
10/21/18 11:18 PM
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Joined: Aug 2007
Posts: 2,969
thorn4570
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I have a Winchester model 70 safari and when go to bore sight with a laser or looking through the barrel I can’t get the elevation adjusted enough. It is way low. The laser is at the bottom of the vertical cross hair and won’t adjust any higher. I switched to low rings and it didn’t change much. I took a pic. It looks like to me the front base is higher than the rear. I am sure there is a simple answer so I thought I would ask y’all. I am thinking that is what is causing my issue. Hope that makes sense.
I once drank muddy water out of a hoof print and was dang glad to get it.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322076
10/21/18 11:22 PM
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Joined: Jan 2006
Posts: 22,268
7mag
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322121
10/21/18 11:49 PM
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Joined: Sep 2011
Posts: 1,053
bo3
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Is it possible the bases are swapped? They look the same but is one taller than the other?
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Re: Rifle question: Need help please
[Re: bo3]
#7322151
10/22/18 12:11 AM
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Joined: Dec 2008
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J.G.
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Is it possible the bases are swapped? They look the same but is one taller than the other? +1
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322162
10/22/18 12:16 AM
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Joined: Oct 2015
Posts: 800
MClark
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Front base does look higher. Return bases and get right ones..
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322164
10/22/18 12:18 AM
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Joined: Jun 2015
Posts: 5,183
scottfromdallas
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What brand are the bases? You might want to consider something like Talley Lightweights or DNZ Game Reaper. Both have worked well on my Winchester model 70. It's less to worry about since the rings are connected to the bases.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322168
10/22/18 12:20 AM
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Joined: Aug 2007
Posts: 2,969
thorn4570
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I measured them and they are the same. It looks to me like the receiver is higher in the front. This is a 1975 Winchester. I thought about shims but it’s a 458 win mag and wonder if the recoil might be to much for that.
I once drank muddy water out of a hoof print and was dang glad to get it.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322179
10/22/18 12:26 AM
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Joined: Oct 2007
Posts: 435
rvrrat14
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322204
10/22/18 12:43 AM
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Joined: Dec 2010
Posts: 27
ruggedcountry
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Need different bases. Set will have thicker rear. But will also have to verify screw spacing on the set. There are several different model 70 sets with long action , short action, short mag, pre 64, post 64, express...... easy to head home with wrong ones
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322207
10/22/18 12:46 AM
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Joined: Aug 2007
Posts: 2,969
thorn4570
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I bet that’s what I did. Gives me a reason to go to Cabelas. Like I need one. Ha
I once drank muddy water out of a hoof print and was dang glad to get it.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322335
10/22/18 01:45 AM
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Joined: Jul 2008
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Texas Dan
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"Some people will never like you because your spirit irritates their demons."
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322361
10/22/18 01:56 AM
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Joined: Mar 2009
Posts: 4,426
jeffbird
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Use a straight edge ruler or level laid on the front base to check the height of the rear base. The rear should be equal height, or a touch higher will work too. With Weaver bases, just buy a taller rear base, there is no need for a shim. Weaver bases have a size number stamped on the top side on the current models to check what is on there vs. what it should be. Here is a link to their reference chart: http://www.weaveroptics.com/mountcharts/Few other tips since that 458 will be rocking, degrease the threads on the screws and holes with Gunscrubber or acetone on a Qtip.. Cheap fingernail polish remover is 100% acetone, check the label. Also, blue loctite and a torque wrench go a long way towards everything staying in place under recoil.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322479
10/22/18 04:23 AM
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Joined: Jul 2008
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Texas Dan
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I’m interested to know if anyone can explain why a rifle would be made in such a way that the rear base is lower than the front? I can understand it being somewhat higher so that the scope is pointed slightly down (relative to the axis of the bore as with 20 MOA bases), which pitches the barrel up for long range shooting.
"Some people will never like you because your spirit irritates their demons."
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Re: Rifle question: Need help please
[Re: Texas Dan]
#7322497
10/22/18 05:11 AM
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Joined: Oct 2015
Posts: 800
MClark
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I’m interested to know if anyone can explain why a rifle would be made in such a way that the rear base is lower than the front? I can understand it being somewhat higher so that the scope is pointed slightly down (relative to the axis of the bore as with 20 MOA bases), which pitches the barrel up for long range shooting. The receiver is lower but the tops of the bases is supposed to be at the same hight. Why is the receiver lower? Maybe to reduce weight, or it could be an artifact from Mauser rifles.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322503
10/22/18 08:17 AM
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Joined: Jun 2015
Posts: 5,183
scottfromdallas
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All Mauser-type receivers like that including the Ruger 77 and CZ 550. The front of the receiver is bigger to accept the threaded barrel. Needs greater thickness for that. Rear is not as thick to save weight. It only has to house the bolt.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322581
10/22/18 12:02 PM
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Joined: Jan 2016
Posts: 7,759
snake oil
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Take those back and get correct Talley light weight rings.
"You may all go to hell and I will go to Texas".
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322616
10/22/18 12:50 PM
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Joined: Jun 2011
Posts: 34,109
Buzzsaw
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I want that rifle !!!!! dont know why, just cool !!!!! i'm a wuss though and need to keep my retinas attached.
you can load it way down, like 45-70 down. punch some cools holes it stuff.
DONT scrimp on mounts or optic. the .458 if you shoot factory loads will eat cheap crap up.
oh yea, i want that rifle
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322617
10/22/18 12:50 PM
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Joined: Jun 2011
Posts: 34,109
Buzzsaw
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I want that rifle !!!!! dont know why, just cool !!!!! i'm a wuss though and need to keep my retinas attached.
you can load it way down, like 45-70 down. punch some cools holes it stuff.
DONT scrimp on mounts or optic. the .458 if you shoot factory loads will eat cheap crap up.
oh yea, i want that rifle
SPACE FOR RENT
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Re: Rifle question: Need help please
[Re: scottfromdallas]
#7322811
10/22/18 02:57 PM
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Joined: Jul 2008
Posts: 22,278
Texas Dan
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All Mauser-type receivers like that including the Ruger 77 and CZ 550. The front of the receiver is bigger to accept the threaded barrel. Needs greater thickness for that. Rear is not as thick to save weight. It only has to house the bolt. Good info. I’ve never noticed the P-type scope rail that I added to my Model 70 has a higher lift in the back than the front.
Last edited by Texas Dan; 10/22/18 03:03 PM.
"Some people will never like you because your spirit irritates their demons."
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Re: Rifle question: Need help please
[Re: Texas Dan]
#7322827
10/22/18 03:05 PM
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Joined: Mar 2010
Posts: 1,544
thedoveshooter
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All Mauser-type receivers like that including the Ruger 77 and CZ 550. The front of the receiver is bigger to accept the threaded barrel. Needs greater thickness for that. Rear is not as thick to save weight. It only has to house the bolt. Good info. I’ve never noticed the P-type scope rail on my Model 70 has a higher lift in the back than the front. When Mauser designed their first actions they never had optics in mind. The design has been around for well over a century. Winchester improved upon the Mauser action when optical sights were still in their infancy. Its easier to adapt for optics by making a base that works instead of redesigning the action.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7322844
10/22/18 03:17 PM
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Joined: Oct 2009
Posts: 1,504
seacam
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I had that issue once on my Winchester model 70. I had the front and rear bases swapped. I had taken everything off and changed some stuff around. Then mounted the same scope and rings back up. Went to the range to dial it all back in. First shot hit about 30 yards in front of me. Took a long look at everything and discovered my mistake. Easily fixed when I got back home.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7323053
10/22/18 05:34 PM
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Joined: Aug 2007
Posts: 2,969
thorn4570
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A lot of good info. Thank y’all very much.
Buz I could not wait to get my hands on it. I got it used and it only had 20 rounds down it. It came with ammo also. Pics don’t do this thing justice.
Thank y’all again
I once drank muddy water out of a hoof print and was dang glad to get it.
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Re: Rifle question: Need help please
[Re: thorn4570]
#7323141
10/22/18 06:28 PM
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Joined: Jun 2011
Posts: 34,109
Buzzsaw
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A lot of good info. Thank y’all very much.
Buz I could not wait to get my hands on it. I got it used and it only had 20 rounds down it. It came with ammo also. Pics don’t do this thing justice.
Thank y’all again
SPACE FOR RENT
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