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Old 07-10-2013, 10:23 AM
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Default Ruger M77 accuracy

hey yall, well my daddy has a rifle (7mm-08) that he bought for my older brother when he was about 12 (10-15 years ago). bought it brand new with a el cheapo reinfield (SP?) scope. the thing was very inaccurate after 90-100 yards, you just simply would not know where the bullet was gonna hit after that distance. when i turned 12 it was given to me and when i was 14 i saved up and put another scope on it (simmons 8 point). but the gun was still very inaccurate after 90-100 yards.

my grandpa bought a 22-250 ruger M77 years ago. he told me that after 3 shots back to back, only giving about 10-15 seconds between shots the barrel would get violently hot and be very inaccurate then.

anybody else have these issue's or have any accuracy issues with the M77?
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Last edited by southernboy2147; 07-10-2013 at 11:39 AM.
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Old 07-10-2013, 10:40 AM
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I don't have that issue with my M77 .270.

I'm using a Leupold 2x7.

I also don't have the issue of my barrel becoming "violently hot" after shooting three rounds.
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Old 07-10-2013, 10:43 AM
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Originally Posted by Wiskey_33 View Post
I don't have that issue with my M77 .270.

I'm using a Leupold 2x7.

I also don't have the issue of my barrel becoming "violently hot" after shooting three rounds.
i might have exaggerated there... but to hot to touch for more than a half a second
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Old 07-10-2013, 11:00 AM
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My M77-Mk II shoots into an inch with a bone-stock trigger and a Simmons Aetec. Been doing it since I got it 13 years ago.
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Old 07-10-2013, 11:10 AM
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What round you shooting? 7mm/08 tends to be accurate. Plus it's modest is your barrel super thin? My m77s all three shoot 1.5ins or smaller at 100yds. We've got a .22 hornet, and 2 .280s one is one of the original m77s from way back. It's the one that opens up with fliers after the first round. But still 1.5in to 2in groups.
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Old 07-10-2013, 11:16 AM
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I have an old M77 .300winmag that is completely stock, and probably the most accurate centerfire rifle I have ever owned. Shoots well under an inch at 100 with a Bushnell scope. Never noticed the barrel being any hotter than any other rifle.
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Old 07-10-2013, 11:16 AM
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What round you shooting? 7mm/08 tends to be accurate. Plus it's modest is your barrel super thin? My m77s all three shoot 1.5ins or smaller at 100yds. We've got a .22 hornet, and 2 .280s one is one of the original m77s from way back. It's the one that opens up with fliers after the first round. But still 1.5in to 2in groups.
in my 7mm0-08 ive tried federals 120 grain i think.. and 140 grain. then the cheap winchester 140 grains.

and no sir the barrel is just as thick as all other m77 ive seen.
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Old 07-10-2013, 11:32 AM
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Clean the barrel lately?
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Old 07-10-2013, 11:38 AM
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Clean the barrel lately?
tbh havent shot it in a while but yes it was always cleaned frequently, and done it since it was out of the box
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Old 07-10-2013, 11:45 AM
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Have you tried Remington core lokts or winchester ballistic silver tips? Every M77 I have shoot one of those two very well.
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Old 07-10-2013, 11:58 AM
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I love my M77 in 7 mag. It doesn't shoot any 140 grn bullet worth a flip, but it shoots 150 and 175 grn core lokts very well.
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Old 07-10-2013, 12:10 PM
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Get it to a gun smith have them factory clean it spotless. Then get multiple stuff to run through it your gun could be picky. Try heavier like 150 or 160gr or copper like Barnes. You could try intermediate like 139gr stuff also.
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Old 07-10-2013, 12:21 PM
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Originally Posted by cpowel10 View Post
I love my M77 in 7 mag. It doesn't shoot any 140 grn bullet worth a flip, but it shoots 150 and 175 grn core lokts very well.
the 150s dont have dont to well out of my savage 7mm but this is a 7mm-08

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Get it to a gun smith have them factory clean it spotless. Then get multiple stuff to run through it your gun could be picky. Try heavier like 150 or 160gr or copper like Barnes. You could try intermediate like 139gr stuff also.
i never been able to find any bigger than 140 in 7mm-08
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Old 07-10-2013, 12:25 PM
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its not a gun that even gets shot anymore, i imagine i would shoot it more if it was accurate. just wondering if anybody has had these issues. i dont think having a gun smith clean it would make a difference as it has done this since it was brand new.
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Old 07-10-2013, 12:40 PM
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Norma is factory loading 156gr oryx
Double tap does 160 nosler partitions

Federal did offer a 160 loaded partition those soft point bullets would still give expansion on whitetail. But would also be hogs bear elk capable rounds inside the effective range of the round.
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Old 07-10-2013, 12:49 PM
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A few things come to mind.

Loose screws holding the action in the stock.
Loose screws in the scope mounts.
Copper fouling in the barrel
Bedding issues in the stock
Dent or Nick in the crown
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Old 07-10-2013, 12:50 PM
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I'd start looking at the scope/mount if the barrel is clean.
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Old 07-10-2013, 01:34 PM
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Quote:
Originally Posted by SCDieselDawg View Post
A few things come to mind.

Loose screws holding the action in the stock.
Loose screws in the scope mounts.
Copper fouling in the barrel
Bedding issues in the stock
Dent or Nick in the crown
u know alot more about firearms than i do lol.. i dont know what none of this means but the 2nd one
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Old 07-10-2013, 02:03 PM
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u know alot more about firearms than i do lol.. i dont know what none of this means but the 2nd one
Lol! I'm a gun nut! Check the bolts that hold the gun in the stock. Usually 2 or 3 of them. They need to be tight but not He-Man tight.

Copper fouling is often over looked. Most people clean the carbon build up out of the barrel. But some don't put the time in to clean the copper out. Usually a solvent such as butch's bore shine or sweets 7.62 and 15-20 minutes of elbow grease takes care of this. But if your gun has had this accuracy issue since day one then I don't believe copper is your problem.

"Bedded" often times the action doesn't fit in the stock properly. Bedding the action into the stock offers a uniform contact point between the action and the stock. Thus removing any conflict between the action and the stock. This process is recommended to be the last performed to increase accuracy.

The crown is the exit end of the barrel. If a dent or nick is present near the edge of the bore, gasses escape around the bullet as it exits therefore causing the bullet to loose its balance.
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Old 07-10-2013, 02:16 PM
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Quote:
Originally Posted by SCDieselDawg View Post
A few things come to mind.

Loose screws holding the action in the stock.
Loose screws in the scope mounts.
Copper fouling in the barrel
Bedding issues in the stock
Dent or Nick in the crown
Here is your answer.... I would check the action screws first, the scope mounting. 3) check the crown on muzzle, 4) check the bedding. I would bet you are gonna find a bedding issue.

Doesn't sound like it has been shot enough to create a big copper fouling problem.
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Old 07-10-2013, 03:58 PM
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I'd bet on the Bedding also. But since its the most expensive step I'd recommend trying the other steps first.
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Old 07-10-2013, 04:01 PM
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Quote:
Originally Posted by SCDieselDawg View Post
A few things come to mind.

Loose screws holding the action in the stock.
Loose screws in the scope mounts.
Copper fouling in the barrel
Bedding issues in the stock
Dent or Nick in the crown
What he said.
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Old 07-10-2013, 04:01 PM
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Slowly loosen the front action screw while the gun is lying on its side. Watch the barrel. If it rises from the stock, then you have a raised pad installed at the tip of the stock. A few years ago this constant pressure was thought to help accuracy, but it made some guns terrible to shoot. If this is the case remove that pad.

If that is not the case, follow SCDiesel / Pappy's advice.
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Old 07-10-2013, 04:22 PM
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I seem to recall reading that some Ruger 77s were fussy if the stock action screw was too tight. I think there are two posts or pillars in the forend that the barrel rests on, as opposed to a single long channel.

Some suggested snugging the screw up just barely enough so it is not loose. But first have some locktight on the screw then let that dry so the screw will stay put right there.

But I am just trying to go on memory, so you might search the net to be sure of the details.
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Old 07-10-2013, 04:41 PM
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Thank yall, yall have been very helpful on this issue. at least i know its a individual gun issue and not a ruger issue!
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