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M77 .30-06 w/featherweight barrel ??

This is a discussion on M77 .30-06 w/featherweight barrel ?? within the Ruger Bolt Action forums, part of the Rifle & Shotgun Forum category; I searched to see if this had been discussed before, but I found nothing. I have an older Ruger M77 with the thin barrel and ...


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Old January 6th, 2017, 10:29 AM   #1
 
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M77 .30-06 w/featherweight barrel ??

I searched to see if this had been discussed before, but I found nothing.
I have an older Ruger M77 with the thin barrel and the tang safety and this rifle came with a pressure point at the front of the stock. Ruger told me it needs to be that way because of the featherweight (thin) barrel, a gun dealer in my area told me he has the same rifle and removed the material at that end pressure point making it a free float barrel and he said his shoots very well....SO I ask is there any comments either way to share. I really would like to free float the barrel because when the temperature and/or humidity changes or the stock gets wet this rifle throws rounds everywhere but where it was sighted in at dry.
To Free float or not to free float, that is the question. Thanks



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Old January 6th, 2017, 11:32 AM   #2
 
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I recommend that you discuss this with a competent gunsmith with copious amounts of M77 experience prior to doing anything...
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Old January 7th, 2017, 02:46 PM   #3
 
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Hmm, I'm surprised I didn't get more people replying....I'm sure others have had similar issues and have wanted to free float their barrels...?
I could go to a gunsmith for this question, but I doubt there are any around here that would have a clue. I also suspect if I asked a few gunsmiths I would get different opinions as to whether or not to do it, that's why I am asking here, but thanks for that advice.

Last edited by mrwintr; January 7th, 2017 at 02:48 PM.
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Old January 7th, 2017, 03:00 PM   #4
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First off, does the gun shoot accurate groups when humidity or moisture is not effecting the groups? If this is the case, leave the pressure point intact and remove the barrel-action. You will probably see bare wood in the barrel channel. Really great for soaking up moisture. seal that barrel channel wood and also around the action with several coats of Tru-Oil and that may cure the problem.
If the rifle is not shooting good groups in any weather, I would then try free floating the barrel and still seal the action-barrel wood. Then shoot it to see if groups improve.
If that does not work, you may need to glass bed the action. If I remember right, I have seen many reports in the past of the older M-77 not being noted for good accuracy and the bedding of the action around the recoil lug was needed to improve the groups.
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Old January 7th, 2017, 06:21 PM   #5
 
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Many gunsmiths work on remington not so much on model77s.
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Old January 8th, 2017, 08:48 AM   #6
 
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mrwinter - I have a 1988 M77 ultralight with the skinny 20" barrel in.308. It was an inconsistent shooter, and after some modifications it became much better, but three shot groups are its limit. The 4th and 5th shots always open up the group due to barrel heat. The pressure point at the very front of the stock is important to keep the whippy thin barrel vibration movement reduced. (Remington Model 7 has a pressure pad at this point also) I free floated the barrel as the very thin stock walls were not perfectly straight with the barrel. Reseal the barrel channel with tru oil for moisture resistance. I glass bedded the action under the tang to trigger guard area, and from the front of the magazine to the front of the chamber where the chamber slims down to barrel diameter ahead of the diagonal lug. I made sure the magazine box had a little free movement so it was not flexing the action over the mag box when all three screws were tightened down good. 100 inch pounds on the front angle lug screw, 65 inch pounds on the rear of the trigger guard screw, and 50 inch pounds on the front of the trigger guard screw. I experimented with additional plastic shims at the front of the stock at the pressure pad, and ended up with .020" shims glued in place there for even a bit more pressure. These mods worked for this gun. It is worth getting it to shoot great as it is a wonderful light gun to carry while hunting. Regnitteo
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Old January 8th, 2017, 10:50 AM   #7
 
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Quote:
Originally Posted by Regnitteo View Post
mrwinter - I have a 1988 M77 ultralight with the skinny 20" barrel in.308. It was an inconsistent shooter, and after some modifications it became much better, but three shot groups are its limit. The 4th and 5th shots always open up the group due to barrel heat.
This has been my experience as well with both Ultralight 308s I owned.
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Old January 8th, 2017, 02:50 PM   #8
 
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They do like that pressure on the foreend. Try what HBK recommended. I own 2 Ruger ultralights right now. They shoot 1.5-1.75 inch 3 shot groups at 100 yards and I am OK with that. I had one in 243 years ago. I had a smith float it and bed the action. The groups got worse. I never did go back in and try to add back foreend pressure before I sold it.
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Old January 8th, 2017, 04:49 PM   #9
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For a medium to big game hunting rifle all you need are 3 shot groups to test accuracy. If you do not drop the animal in the first three shots, he will be in the next county running as fast as he can go.
Varmint rifles that are use over P-dogs colonies is a different matter. I would want at lease 5 shot groups or 10 shot groups since you may fire that many rounds in a short time while shooting the P-dogs.
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Old January 8th, 2017, 05:39 PM   #10
 
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Thanks everyone for all the input on free floating this barrel, I guess I will leave it alone.
HBK, I tru oiled the entire inside of the stock a couple of years ago, thought would solve the problem, but it still changes depending on temperature and humidity. When its cool and dry and I sight it in I get one very good load I made for this rifle to group 1 1/4" to
1 1/2" @ 100yds. From what I read from dranrab that might be about as good as this rifle will group.
I have been reading someones post in here about filing down the magazine box until it moves freely, so that it isn't jammed up to the receiver..?? Maybe I will look into that some more.
Thanks again
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