ruger m77 270 home brew accuracy


July 18, 2010, 07:40 PM
hey guys just posting a update on my old hunting rifle ive had since i was 16 that needed a over haul. this rifle started life as a deer rifle ment for nothing more that 1 to 2.0 moa and for a 200 yd max shot. here are some small things that helped MY m77's accuracy. i had never tryed anything like this before so bare with me on this.

ok first i started by free floating the barrel

i found that about 90% of the contact was at the first 1.5'' of the stock and with a little reaserch found that rather than hand fit every rifle from that factory its easyer and cleaner looking to tention fit all the rifles. some m77's like it others not so much.

i also reamoved all of the contact points on the side of the barrel to alow the barrels natural harmonics to do there job

this helps accuracy quite abit useing the same box of hornady gmx 130 gr using 3 shot groups to compaire progress, the first group i shot gave me a group of just over 1.75 inches at 100 yards <sorry no pics> after free floating

3 shots covering a nickel at 100 yd. im very pleased with the results, but your rifle may not give the same results, also i went ahead about two hours ago and bedded the action to see if i couldent get rid of the 3rd round flyer that ive always had

first i opened up the recoil lug resess in the stock and under cut the rear of the lug resess to create a mechanical lock for extra inshurance, sorry you cant see.

i also found that white lithium grease works great as a releasing agent

not the best looking bedding job using devcon but shure works like a charm

end result, the old 270 is a nail driver now. not custom rifle accuracy but more than good enough to take white tails out to 300, but that would be my max.

all my test were done using a bench vice slow fired and cleaned before each test, and preformed at the same range.

these resluts may not hold true to your rifle, but they did well with my rifle

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July 19, 2010, 10:57 AM
Nice work. The older pre-Hawkeye Ruger M77 MkII in stainless with the grey laminate stock is a great looking and great performing rifle. I have one in .223 Rem that I intend to bed sometime soon. Are you using a torque wrench and specific in-lb settings on the three (3) action screws, or just going for "farmer tight"? Though your group looks pretty good as it is, do you think there would be any additional benefit in bedding the REAR of the receiver also?

July 19, 2010, 11:41 AM
Nice. Luckily my m77 was a natural shooter

BTW try a couple of fouling shots After cleaning before you settle in to try for groups

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