Ruger will Not hold zero!!!


October 18, 2012, 08:10 PM

I have a Ruger M77 MKII. Stainless/skeleton stock 30-06.
I bought this gun new, back in the 1997 or so. It has laid in the closet, in the box, until about 2 years ago. The cold bore is never in the same place. Shooting a 5 shot group, shot 1 and 3 may touch. 2 and 5 some times touch, but about 4 inches apart factor in shot #4 and it has shot some 6" groups!!!! Sent it back to Ruger, the replace the bolt, and said it was fine. I have tried many things. I reload, so tried Burger 155 VLD - Hrndy 150 SST - Nosler 150 BT, with countless powder charges of H4350, IMR4064, IMR4350, IMR4831. Have also let it eat some factory amo 150gr to 180gr. Put 3 different scopes on it, Burris Full-field, Pentax Lightseeker, Nikon Buckmaster. I got Houge full length almn bedded stock no help, Basix trigger no help, I re-sighted it in yesterday. shot 3 touching at 100yds. let it cool, then it started shooting 4" high and 3" left about 1 1-2" group. Could it be the Ruger rings? please help if you can. This is about to be my 1st and last Ruger!!!! HELP!!!! :banghead:
Should I give up and put it off on someone?

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October 18, 2012, 08:39 PM
I am going to say your getting slippage in the rings. Not every factory set up is optimal, but yours sounds a bit odd to me. When you first cleaned it did you look for burrs in the barrel? Did you check the crown?
I am gonna wait on Oldfuff to give the definative most likely culprit.

October 18, 2012, 08:41 PM
You either have a bad scope, or a bad flinch.

One or the other, you decide.


October 18, 2012, 10:09 PM
I can't feel anything in the bore when I clean it, the crown looks ok. I dint have a bore scope so I'm not sure about the refiling. I am going to try another scope and put some electrical tape in the rings. If that does note work I thought about those bullets that smooth out the bore.

I will admit I have flinched on shots in my time. But I can pull off 1 MOA shots at 200yds with my 7MM mag, and with my AR15 at 100yds like clock work. I thought about the flinch, So I bought a lead sled and a trigger (same results). LOL.... I have spent more trying to get this thing to shoot than I spent on the gun!!! but it has become a challenge at this point. Thanks for the feed back, I will try her out in a day our to and give you an update.

doc and rc

October 18, 2012, 10:11 PM
sorry about the typos got a broke thumb

October 18, 2012, 10:14 PM
I'd guess there's a problem with your scope and/or rings. On a side note, a good way to check the bore without a bore light is to take a nice shiny dime, set it on the bolt face, and use a flashlight to reflect the light into the bore. You will be looking at it down the muzzle, so MAKE SURE IT IS UNLOADED.

October 18, 2012, 10:19 PM
Electrical tape in the rings??? That likely will end up a gooey, slick mess in short order. If anything, very fine emery cloth to lap the insides of the rings, wiped clean with lacquer thinner to remove all traces of grease/oil. Rings should have factory specified torque, applied in alternating ascending order in three steps.

October 18, 2012, 10:49 PM
Try bedding it \, free float the barrel

October 18, 2012, 10:59 PM
sorry about the typos got a broke thumb
You sure its not you?:D

October 18, 2012, 11:27 PM
electrical tape in the rings
I did that with my Ruger. The cloth type. Before, the top halves touched the bottom halves. Works great, lasts for years.
You might try flat-base bullets. That helped some in mine. The other thing that helped (some) is neck sizing the cases.
Some Rugers just suck.

October 19, 2012, 01:30 AM
sounds like the scope is broken internally.Similiar thing happened to me and drove me nuts trying to nail down the cause.Culprit; a small spring that adjusts the cross-hairs broke off.

sorry..dont know.I now see that you already tried 3 other scopes..Sounds like its something with the bore itself heating up and cooling down.

October 19, 2012, 01:38 AM
I had a scope on a mini 14 die and it acted the same way.

October 19, 2012, 04:09 AM
Electrical tape in the rings??? That likely will end up a gooey, slick mess in short order. If anything, very fine emery cloth to lap the insides of the rings, wiped clean with lacquer thinner to remove all traces of grease/oil. Rings should have factory specified torque, applied in alternating ascending order in three steps.

this is good advice.

i had a ruger rifle that was very fussy about its bedding. I suggest that you start from the very beginning again.

take the action out of the stock, its a chance to clean it as well, then put it back in the stock and tighten the bedding screws as recomended in the handbook.... thats really important.

Tighten the mounts correctly after cleaning the scope and the rings with a spirit cleaner.

Whilst its all in bits you might aswell give the barrell a proper clean as well.

bedding screws are really important.

October 19, 2012, 07:47 AM
Had a M77 and it would never do better than 4" group at 100 yards. Mini 14 was twice as bad in that it would group 4" at 50 yards. I'm done with Ruger rifles.

October 19, 2012, 08:03 AM
Oh, goodie! Is there were we all get to drop random and unhelpful commentary relative to the OP about how Ruger is teh suk? Cool!


October 19, 2012, 08:36 AM
Well, if your description is accurate, it sounds like the ONLY variable left IS the rings?

FWIW- my '06s and .308s really seem to prefer to shoot closer to 150 gr. bullets, for reliable accuracy.

I'd skip the electrical tape altogether and just get some quality rings. You've come toooo far on this rifle to just sell it off, IMHO...

October 19, 2012, 08:55 AM
Sounds like new rings are needed.

Get new rings, maybe you can call Ruger and they will send you some for free :).

Sounds like you have covered all the bases and the rings are the last obstacle.

Just my .02,

October 19, 2012, 09:42 AM
You can put a thousand dollar scope on a Ruger or a Tasco and they usually won't shoot. Of course Some Ruger rifles are the rare exception. I do think they have some nice revolvers though. My advice is to sell the rifle and look for an older Remington.

October 19, 2012, 10:10 AM
I shoot screwey because it's a Ruger. I have owned about 5 over the years hoping that the lastest would be a good shooter. Finally got rid of all of them. If I were Ruger I'd roll stamp someone elses name on each piece.

Ky Larry
October 19, 2012, 01:33 PM
I had a Ruger 77 in .243 Win. Blued and walnut. Beautiful rifle but it wouldn't shoot. I had it bedded,
Timney trigger, 2 different Nikon scopes, Conetrol rings, shot every factory load and every hand load I could find, had the muzzle recrowned, etc. It still shot shotgun patterns. Finally gave up and got rid of it. I've heard that Ruger outsourced its barrels so quality was hit or miss. Now that they've gone to in house production, that problem has been mostly cleared up. Some rifles are just dogs. They will cost you more to solve their problems than they are worth.

October 19, 2012, 08:43 PM
Kind of says it all. Looking back 33 years ago when I could buy my first rifle, if I had to do it over I would have saved a few more dollars and purchased a Pre 64 Winnie and you would really never have to look back. sadley I had no one to give me good advice and I purchased a Mini-14. Took me 9 years to figure out she would never shoot

October 20, 2012, 12:40 AM
Had a 77/22 that could never do better than .5" at 50 yds. (had some button chatter). Bought a 10/22 for Father's Day decades ago and the old man couldn't do any better than that till he swapped everything (trigger, bolt, barrel, stock, etc.). Yep, them Rugers is horrible...I do know a fellow who shot a world record with a stock #1 but sure 'nuff 12 years later someone broke that record.

I'd start with new steel rings and while you're spending the money, have a smith do the install. Have you marked the tube to verify whether it's slipping? I use a cleaning patch and flashlight to look down the bore and my smith bore scopes anything suspect. My guess is you're close but have overlooked something.

October 20, 2012, 01:06 AM
I have a few Ruger centerfire rifles, including a #1V in .223, a stainless synthetic M77 Mark 2 in .338 win mag, and a stainless laminated M77 Mark 2 in .270 win.

All three are very accurate, although the #1V took a fair amount of work, including free floating the fore end. It only shoots sub moa with neck sized brass. Period. The hotter the barrel gets, the tighter the groups get. It prints sub moa groups with 52 gr. Sierra HPBT and H335 (5 shots).

The .338 shoots Federal loads with the 250 gr. Partition into about 1.25" for 3 shots out of a cold barrel. The .270 is about the same with my favorite hand load, featuring a 130 gr. ballistic tip over a max charge of H4350.

If I were going to buy another big game rifle, I would definitely take a look at Ruger.

October 20, 2012, 09:59 AM
A buddy of mine has a Ruger 22-250 that wont group. I put 3 shots into a dime at 200yrds with it one time out, next time there all over the paper. I think his scope is junk, but he has not changed it out yet. I still say its your broken thumb:neener:

October 20, 2012, 11:13 AM
Check the rings and mount. If it isn't the scope, then you could try bedding it. If that doesn't do it, then I would say the barrel is the problem,and you should get rid of it.

Andrew Leigh
October 20, 2012, 11:25 AM
My shooting buddy had one for years. There was nothing he could do to get it to shoot properly. He is both a competent shot and amateur gunsmith. After checking bedding, trigger, scope mounts he recut the chamber which helped slightly but not enough to stop him from selling the rifle. He could get no better than 1.5MOA, although fine for a hunter we like to get closer to 0.5MOA on our hunting rifles.

October 20, 2012, 11:36 AM
Rifles obviously a piece of sh*t, I'll give you a couple hundred and take it off your hands.

October 20, 2012, 01:04 PM
I have had problems with inaccurate Ruger 77's that I have corrected. Most important-first the barrels need to be free-floated. Second the action screws must be snugged down in sequence. Install the front screw to remove slack and just bottom the screw. Then take up slack in the middle and rear screws being careful to not over torque them which will bind the action. Check again for any looseness but do not over tighten or bind the action.

October 20, 2012, 04:58 PM
Try a different scope

Also, when mounting the rings to the receiver----jiggle the screw until you find the sweet spot then do your final tightening.

October 20, 2012, 06:35 PM
I have a Ruger 77 MKII in 308. Couldnt get it to shoot. Took it to a gunsmith I know and he found the built in bases were crooked. Ruined a scope. Had a scout mount put on, shortened the barrel to 18 inches and added a Timney trigger. Worked wonders. Last two groups I shot went into 3/4 inch at 100 yards with Federal 150 gr ammo. Most ammo and handloads will group into not more than 1.5 inches.

Take a good look at the scope bases. I would have the scope rings reamed. Could be putting stress on the scope.

October 21, 2012, 05:29 PM
I've 3/8 inch groups at 100 yards with a m77. Just sayin'. Probably a scope issue not a gun issue.

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