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  #1  
Old 05-29-2021, 07:09 AM
Smokey257

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Wink The Luck of the Draw



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I bought my first 77/22 as soon as they became available. Don't recall the year.
Blue steel and black walnut. Look and feel I just had to have.
Other than some trigger work I did nothing to it. Bolt shims hadn't yet become the craze.
It shot o.k., 1/2" to 3/4" at 25 yards. O.K. for my casual range work and occasional small game hunting, but I eventually let it go when a couple of Kimber's and an Anshutz proved to be consistently more accurate.
Earlier this year a family member passed on his unmodified 77/22, also blue on walnut, iron sights.
First group at 20 yards put 5 rounds of CCI HVHP into a single hole of about .3 inch O.D.! Decided to see if I could figure out why the extraordinary accuracy.
Other than obvious barrel quality and a good crown, I've identified 3 factors that may well account for a goodly portion of my good fortune.
#1. The barrel channel in the stock shows a perfectly centered, narrowed high point about 1/2" back from the foreend tip.
#2. The bolt won't accept the thinest of shims, and,
#3. A tight chamber that leaves lands engraving on many (maybe all) of the chambered rounds.
This one , I keep.
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Old 05-29-2021, 02:07 PM
jjjjcorn

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Sounds like an exceptional specimen! On my 22 I had to remove the front bump and float the barrel (screwed in type) to get accuracy, smallest shim. Didn't notice any change with the shim.
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Old 05-30-2021, 08:30 AM
Smokey257

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Luck of the Draw

Anyone else have experience with "loose vs. tight" chambers? A hard factor to separate out. How much difference might it really make other than making me
feel good?
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Old 05-30-2021, 04:46 PM
jimdgreat1
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Read on here someone thought the first year or two had a match chamber. Yours with open sights could be one of those.
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Old 05-30-2021, 04:52 PM
WalnutBill22
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My 77/22R is a second year (1985, I think) model. No doubt I lucked out too, since mine is quite accurate, generally keeping around 1/2 inch or less at 50 yards with good ammo. I've managed a few groups in the 0.2s and 0.3s. It too has a fairly tight chamber, with some slight chambering resistance in the last 0.1 inch or so. The only modification I had to do was a little trigger work.
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Old 05-30-2021, 09:10 PM
Smokey257

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Luck of the Draw

I'll have to check my "D.O.B."
Would have been surprised if there hadn't been more Match Chambers out there.
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Old 05-31-2021, 09:22 PM
Smokey257

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Luck of the Draw

WalnutBill,
According to Ruger my 77/22 shipped in 1985 (2nd year of production.)
Serial # 700-55XXX, maybe close to yours?
Tight chamber seems to be consistent.
Makes you wonder if all early 77/22's were similarly chambered and if so, when did they stop and why. Seems a tight chamber would be as easy to cut as a looser one.
Rob
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Old 05-31-2021, 09:39 PM
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Toomany22s
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Easy answer. The tool got dull.

Or, people complained they couldn’t extract an unfired round, and so they got a new tool.

My 77/22 is a pretty good shooter. But even a better looker
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Old 06-03-2021, 07:25 PM
WalnutBill22
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Quote:
Originally Posted by Smokey257 View Post
WalnutBill,
According to Ruger my 77/22 shipped in 1985 (2nd year of production.)
Serial # 700-55XXX, maybe close to yours?
Tight chamber seems to be consistent.
Makes you wonder if all early 77/22's were similarly chambered and if so, when did they stop and why. Seems a tight chamber would be as easy to cut as a looser one.
Rob
Hi Rob, I guess mine was a bit earlier than yours, but probably still the same year. It's number 700-1646x. It may have been late '84. I think we both got lucky.
Best regards,
Bill
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Old 06-04-2021, 01:52 PM
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Maybe it has been worked on by CPC.
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