Daddy's Deer Rifle

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As Dads vision is not what it used to be my father gave me his old deer rifle, a Winchester 100 (.308 Semi). It was always stored in the broom closet at the farm where it could be accessed when there was issues with predators in the herd and as such had taken a bit of a shagging since he bought it new in 1961.

Now Dad was a tinkerer but not much on the maintenance end of things. A quick swipe with a cloth covered in 10W30 or WD40 every other deer season was the maintenance for close to 50 yrs. It was showing the scars of being banged around in the broom closet with 4 other rifles, a vacuum and every other piece of farm junk that would fit in there.

When he gave it too me he cautioned that it didn't work that well and need to shoot at least 180 grain or it wouldn't cycle efficiently. So last winter I made it a project. It took a while to learn how to break it down but CGN'ers helped.

The barrel was in suprisingly good shape, no pitting or rust inside or out.

I replaced a firing pin that apparently was involved in a recall a number of years back.

The monte carlo walnut stock was stripped of what was left of the varnish, hand sanded smooth around the checkering and finished with a wonderful danish oil that made the wood grain pop.

The gas piston needed some loving. It had virtually seized solid. Once I was able to get enough solvent down to bust up the carbon and corrosion it was clear that there was some pitting but once clean it cycled perfectly.

At the range it ate everything I through at it with great groupings at 200m.

So when I told the old man how it was running he wanted it back(only half joking). But where this tale leads is when I asked him why had he never cleaned the gas piston as it would have run much better he responded "What gas piston?".

For 50 yrs he had used this rifle regularily and had never maintained the gas piston assembly. He got his deers every year and it never failed when it was needed for farm work.

I think I'll keep it around, seems like a good enough rifle to me. They just don't make'em like that anymore... especially not for free!

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a pic after the work was complete.
 
I've got a model 100 in .308 1961 vintage as well. It has been well taken care of and works great but I find that mine will shoot anything except 180gr. bullets. It will put 4 rounds into 1.5 inches at 100 yards. Mines a keeper and I really enjoy shooting it you will have a blast as well. Glad you got it cleaned up and working.

Brad
 
Nice job reinvigorating her! Nothing like a family gun to make it special! I have a few of my fathers and grandfathers various guns, and i treasure them.

LOL about the gas piston, bet there's lots of em out there like that.

Again, nice work and fun post!
 
Your's appears to be a pre-64 my dad's is post with the oak leaf stock design.It won't shoot 180gr bullets no how.The 150gr handloads shoot 1/2 MOA or better never tried 165's?I had the recall firing pin change but don't have a clue how to get at the gas piston to clean it any pics or advice?Thanx Harold
 
Winchester M100 Breakdown Instructions

...I had the recall firing pin change but don't have a clue how to get at the gas piston to clean it any pics or advice?

It was cleaning time anyway(lol). You'll need a couple of flat head screwdrivers (large and med) and a 3/32 pin (or a finishing nail... you'll see why later).

Start by removing the screws for the front sling mount and just behind the trigger. This is all that holds the rifle to the stock.

Next pull back on the bolt until the action clears the stock (see pic) and them remove.

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Next I unscrew the bolt from the piston assembly(pic). This will allow the piston sleeve to move freely now.

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Pull back on the bolt until you're able to remove the pin with the 3/16 pin (pic). It should come out easily. Use caution as the bolt is under some pressure from spring... not a lot but enough to send it flying it you're not careful.

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Once this piece is clear you can remove the piston sleeve and clean the piston and sleeve separately. I had to soak my Dads in solvent overnight just to loosen 50 yrs of crud, rust and build up.

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Once it is back to its shiny new state just reverse the instructions to get her back together. Remember that there is a key of sorts that will require some aligning before you put the pin back in but thats just a bit of patience and manual dexterity(pic).

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If you inspect your piston and find that perhaps there is damage Brownells has replacements (see link). I believe you just have to remove the pin at the base of the piston to swap it out.

http://www.brownells.com/.aspx/sid=24040/pid=0/sku/Winchester_100_Gas_Piston

Cheers!
 
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Nice work. They are sleek looking rifles, and handle nicely.

I'd wondered why there weren't more of the semi auto hunting rifles. The local gun stores generally stocked about 95% bolt action rifles. I'm from Alberta and one of the local guru's from P&D explained that there were a lot more semi's in Eastern Canada than Western.

It had to do with that out West we had more open areas as opposed to the bush of Eastern Canada (admittedly gross generalizations so save the flaming;)). With the long, open shots the accuracy of a bolt action was preferable. In bush it was better to have a few quick follow up shots over shorter distances which lent itself more to a semi auto.

It made sense at the time...
 
My dad got one of those new around 67 that loved to double fire. Not every time but often enough. Weird badang sound and 2 empty cases on the ground from one trigger pull.
 
That double fire you experienced was part of the reason for the recall on the firingpin. It was known to break and jam in the forward position causing the double fire. The biggest concern was the round could go off before the bolt was locked in the closed position.
 
I'd wondered why there weren't more of the semi auto hunting rifles. The local gun stores generally stocked about 95% bolt action rifles. I'm from Alberta and one of the local guru's from P&D explained that there were a lot more semi's in Eastern Canada than Western.

It had to do with that out West we had more open areas as opposed to the bush of Eastern Canada (admittedly gross generalizations so save the flaming;)). With the long, open shots the accuracy of a bolt action was preferable. In bush it was better to have a few quick follow up shots over shorter distances which lent itself more to a semi auto.

It made sense at the time...

Same reason a lot of easterners favor pumps and levers..
 
I would love to own one. And if it had been my Dads I would treasure it all the more . My Dad had traded off an old Marlin 32 rimfire lever about 45 years ago,it had belonged to his uncle whom he never got to see since his uncle was killed in 1917 in Passchendale. I know where this gun is and am trying to buy it. Hopefully someday I will carry this nice old Marlin and be "taking a walk in the woods" with his uncle at the same time. Dave
 
thank you for this thread. I have two Win M100 and I need to do the pins too. Subscribed

PS. 180 grain sabre tip (ballistic tip) will cycle best int he action. Round nose bullets are no good. If you reload, You may want to try a deeper seat with a round nose... might do the trick
 
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One of the reasons that the 100 went out of production was that they just cost too darned much to make.

They were really a quality rifle and a very compact and robust design for a civilian rifle. Only problem was that they rarely got any more maintenance than a spray of WD-40 once a year.... and we all know what that does when it dries out! Saw a rifle once, a semi built about the period of your rifle... that was completely glued together with old WD-40. We had to buy 2 gallons of the stuff to soak the rifle in overnight, then stripped it, washed the parts in Varsol and blew them dry, lubed everything, ground the carbon off the piston and put it back together. Cost a lot, but worth it; I think the old critter's out there, chugging away still.
 
One of the reasons that the 100 went out of production was that they just cost too darned much to make.

They were really a quality rifle and a very compact and robust design for a civilian rifle. Only problem was that they rarely got any more maintenance than a spray of WD-40 once a year.... and we all know what that does when it dries out! Saw a rifle once, a semi built about the period of your rifle... that was completely glued together with old WD-40. We had to buy 2 gallons of the stuff to soak the rifle in overnight, then stripped it, washed the parts in Varsol and blew them dry, lubed everything, ground the carbon off the piston and put it back together. Cost a lot, but worth it; I think the old critter's out there, chugging away still.

It all sounds eerily familiar. The best was the look of the old man's face when he viewed the finished product. A odd mix of pride in his sons work, envy in wanting it back and self petulance for not have doing the work himself sooner. I think of all the winters that were spent on the farm snowed in and bored to tears that we could have took a project like this on together.

On the upside he still gets to run a few down the pipe whenever he wants. At pushing 80 I don't have the heart to teach him how to clean it though:p
 
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Model 100's and 88's were marketed through chain hardware stores at the time Mcleods Coop any place that had access to general whole sale suppliers being a kidin the early 60's I would see them in such places.
 
My dads' go to gun for years was a 308 M100, and it has become mine. Had it at the range once and it managed a "triple". I got it apart after that, and cleaned out the whole deal. I reasoned the "triple" was from grime on the sear, as the pin issue had been dealt with. Sure enough a good cleaning and it performed flawlessly for another few years. It used to hold MOA with 150's and 1.5 MOA with 180's, alas it has seen many rounds and is no longer able to hold any less than 6 inches at 100yds. I thought copper/nickel fouling, and adressed the issue, still no :(. Oh well, may have to rebarrel or open 'er up to 338 federal. M100 in 338 fed would make a helluva camp/bear rifle.
 
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