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cottontop 04-02-2013 04:23 PM

91 Mauser Scope Mount
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Attachment 94147

Thought you might like to see my economy scope installation on my 1891 Argentine Mauser. I first removed the rear military sight from its housing and then installed a 98 Mauser scope base for $20 that is made to install on the rear sight housing of a 98 Mauser. I installed the base backwards so that the rail would extend closer to my eye. Lots of moto tool grinding was needed to get the contour of the base to fit the receiver. Everything locked up tight except that the rear part of the base had some play in it because there was nothing holding it to the receiver. I then drilled an 8-32 sized hole through the base (with a hand drill I might add) and into the receiver about 1/8". I ran a tap into the hole until it bottomed out, inserted a screw, tightened it down, and everything is solid. I mounted a scope and bore sighted it. I'll test it out this Friday, but it should shoot just fine.

Sniper03 04-02-2013 04:29 PM


Let us know how it turns out! The only possible issue will be the amount of adjustments you have. But looks good! Great idea! We will be awaiting the range report! :) That is also one fine looking rifle!


cottontop 04-02-2013 04:47 PM

Thanks for the positive comments sniper. This rifle is in very good shape, but it had already been bubbaed some, i.e., missing hand guard and the front of the stock has been cut down some, so there is no collector value there, thus, I did not mind altering it. The scope is mounted far enough forward that I did not have to alter the bolt handle or safety, but back enough to see the field of view in the scope. Will give you a range report this weekend.

cottontop 04-05-2013 01:17 PM

Can't make it to the range today;too much rain and wind. Will go next Friday and post a report.

jpattersonnh 04-08-2013 09:06 PM

Great idea. If there is not enough adjustment in the scope, you could shim the back of the base. Is that an old Weaver K4?

cottontop 04-08-2013 09:39 PM

Yeah, I thought about shimming if I can't get a good adjustment. That scope is an old "Valor" scope, fixed 4X that I picked up somewhere for cheap, made by who knows? It will serve its purpose on this rifle, at least for a while, maybe more. The crosshairs on it are really cool, though. All four are fairly wide and then taper down to a fine point where all four meet in the middle. I'll shoot it this Friday and give a report.

jpattersonnh 04-08-2013 09:58 PM

Nice job. ;) You need to tell us what you think of the cartridge also.

cottontop 04-12-2013 10:02 PM

I fired the old Argentine at the local range today. This gun is a definite shooter. Bore sighting got it on paper and there was enough adjustment to get the scope zeroed. Because of the slim, straight stock grip, I was not able to hold it as steady as I would have liked, but I was able to shoot several groups that were right at MOA, with most running at 1 1/2" @ 100 yards. I think that is more than adequate for deer or boar hunting, and not bad for a 100 plus year old military rifle. My home gunsmithing scope mounting worked very well as after 50 rounds, it is tight and did not move. I was shooting the 150 grain bullet w/ IMR 4350 and 3031 powder. Both powders shot equally well. The 7.65x53 cartridge seems like it is a good one that should be adequate for most anything within reason. Recoil was very mild and I liked that fact. Next, I will try it with some 174 grain bullets that I just got and see it it likes those any better.

jpattersonnh 04-12-2013 10:08 PM

Very nice! Using a fast powder like 3031 and having low recoil is a plus. I need to pick some up for the 9.3 just to try it.

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