Here is a 1942, by serial numbers, grooved top Model 61 rifle. I can’t explain it unless the previous owner had it custom done.
https://www.proxibid.com/asp/LotDetail.asp?ahid=4840&aid=64358&lid=16063110&title=Winchester-Model-61-Pump-Action-Rifle#
Michael
Model 1892 / Model 61 Collector, Research, Valuation

Michael, I am not to bright on 61’s, or anything else for that matter, but I am aware that the model 61 did come with a grooved receiver, but do not know when they started that. Is this gun to early for the grooved receiver or ?? I am looking for one of these that I can put a period scope on and replace my Ruger 10-22 with it. Thanks, Peter
Looks like the back half with the 64285 serial number would be an early model 61. Note that the top tang is correctly drilled and tapped with filler screws for a tang sight.
Likely it has a late model 61 front end with the grooved receiver fitted to the older back half.
Jolly
January 26, 2011

Michael,
Heres another one that has likely been grooved after it left the factory. Its a 128,000 s/n gun from 1949. The grooves shouldnt be there until 1954, right?
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=332084618
Probably bringing a little more money than it should, considering the alteration. Also note that someone must have questioned it, since he has a response defending the grooved receiver.
Gary
~Gary~
Gary,
That is a terrible after market groove job on that rifle. The grooves are not blued and the ends are not even. $800 with shipping? Too much for the gun.
And Yes 1954 was the beginning of the grooved top receiver.
Michael
Model 1892 / Model 61 Collector, Research, Valuation
January 26, 2011

Heres what appears to have been a smoothbore from the factory, but later had a standard s,l,lr barrel put on it. Looks like the postal proofmark, but I wonder why the barrel is proofed off to the left side like the matted receiver is?
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=333021793
Also, wasn’t someone tracking the smoothbore 61’s here a while back, or was that just the Routledge bores?
Gary
~Gary~
The M.61 smooth bore is rare variation of the standard .22
It is about as useful as tits on a bull but was developed to allow skeet shooting indoors called "Moskeeto" invented by Fred Routledge Fred also developed the "Routledge bore" which gave a better pattern
The receiver of the rifle in question has a matt top which is positive id that it was originally one of these
January 26, 2011

I’m guessing someone had a smoothbore and decided it would be much more useful as a rifle. They ordered a Winchester mail order barrel and put whatever sights on it that were available to them. It still doesnt explain the offset proof and that it matches up nice with the original proof on the receiver………..anyway, I guess it stirred up a little conversation between us. Thanks for the replies,
Gary
~Gary~

Gentlemen,
I believe your thread has shed some light on my 61 Long R. Octagon proof mark puzzle. The barrel WP proof mark is located centerline, top of barrel, just above the L in the Long R. marking on the side.
My puzzle has been, why is there a larger distance than normal between the top receiver WP and the barrel WP proof marks? Additionally, that larger-longer space on barrel shows the signs of one nicely filled hole (looks like bluing was rubbed away)…MAYBE this is where a scope mount mentioned in thread above could have been positioned. The barrel also show sign of bluing rubbed away around the rear sight area. MAYBE a second location for the barrel scope mount?
Question-request for info. Let me know your thoughts-knowledge on my barrel WP situation.
Info on my Model 61: serial number is 102XX, Octagon barrel, -.22 LONG R.- marking on side barrel…as same from a couple other LR only Octagon barrel guns I’ve seen.
I’ll post pics shortly, just got to understand how…
Appreciate any thoughts-advice on my 61.
v/r
AMMO86
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