Little Mauser M48 help


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tlend
February 2, 2011, 02:33 AM
Hoping for a little insight on my Yugo/M48 8mm mauser. I picked this one up cheap ($150) and it was complete except for the front sight hood, which I may replace someday, but didn't figure was terribly important for the time being. I brought this baby out of its military storage status complete with cosmoline/grease wrap. I cleaned it up nice and after a thorough checkup, took it out to the range with some surplus Yugo 8mm ammo (the corrosive stuff).

With the sights all the way down (200m) I figured I'd print a little high at my 100 yard range. Here's the intersting part. My shots were hitting about 2 to 2 1/2 feet high at 100 yards. I was lucky to just see an impact on the top of the target. On a hunch, I went back to my bench and held at the bottom of the cardboard backing and hit about a 4 inch group on my target (about 2 feet high). The military ammo is 197gr FMJ and chrono'd 2400fps

I thought it might be the ammunition and so I tried some Sellier and Bellot factory ammo (196 gr FMJ) which chrono'd 2587fps. Not surprisingly, this ammuntion printed even higher on the target.

I guess I'm wondering if this is typical for an old M48 or maybe if I'm doing something wrong. Should my rounds be hitting so high at 100 yards with a 200gr bullet? I'd be happy if my rounds grouped around 5 in' high at 100 yards, which I figure would be pretty close to the 200m zero indicated by the sights. Is there a way to calibrate the sights or at least reset the zero? I suppose I could grind down the front sight (meaning have a gunsmith do it) but I don't want to modify it if I'm just doing something wrong.

Admittedly, the rifle doesn't fit me that well. I have long arms and when I'm shooting, my nose is uncomfortably close to the rear of the bolt/safety. I have to really scrunch to get down low enough to line up the sights and maintain cheek weld, which I suppose could be another issue. Maybe my sight picture is off? I have been trying to level the tip of the front sight with the top of the rear sight leaf (see attached image of my doodle and see if you can make sense of it). I usually shoot open sights with standard military ar-15/M1A so this is a bit foreign to me.

I'd like to get some more enjoyment out of this rifle, without having to tailor/handload ammuntion for it. Shouldn't it be able to shoot military ammo reasonably well? The group was fine, it was just way up high, which leads me to believe I have either a sight picture problem or a sighting system problem. Being a surplus military rifle, it did not come with any documentation. Any help at all is appreciated. Thanks!

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eastbank
February 2, 2011, 07:56 AM
you will need a higher front sight blade to get your poi down,DO NOT FILE YOUR FRONT SIGHT DOWN AS THAT WILL ONLY MAKE YOUR RIFLE SHOOT HIGHER. your sight picture is ok. eastbank.

az_imuth
February 2, 2011, 08:25 AM
I have an M48 that does the same thing using some of the old Turkish 8mm ammo. Since I don't shoot it that often, I just built the front blade up with some JB Weld. I then proceeded with shooting and filing until I had it where I wanted it. The JB has actually held up quite well, but if I were going to use it any place other than a bench I'd aim for a more permanent solution.

madcratebuilder
February 2, 2011, 09:15 AM
Not unusual for the M48 to be high at 100yds. A taller front sight from a vz24 or you can deepen the notch in the rear sight. My solution was to go with a MOJO sight system for the one Yugo I shoot a lot.

Al Thompson
February 2, 2011, 09:55 AM
Lots of the older rifles were battle sighted for engagements out to 500 yards or so. Thus the high impact at 100 yards. As mentioned, front sight taller or rear sight lower for a 100y zero. :)

Mr_Pale_Horse
February 2, 2011, 11:26 AM
These guys sell a tall front sight.

http://www.tngunparts.com/mauser.htm

tlend
February 2, 2011, 11:31 AM
Thanks all. I'll look into another sight.

Float Pilot
February 2, 2011, 02:22 PM
Even if properly sighted at 300 meters it should only be about 9 inches high at 100.
You were supposed to aim at the enemies belt buckle at 100 meters.
Brownells also sells replacement front sight blades that are much higher., thus pushing down the groups.

Also you may want to try a 6 o'clock hold. Balancing the black circle on top of the front sight blade. It will give you better groups and bring down the point of impact a few inches.

MAUSER
February 2, 2011, 03:35 PM
THESE SIGHTS are on millions of rifles and they are not! easy to use
I prefer the hood on and at 20 yards I cloudnt hit a can with a brand new m 48
until I got the sghit picture rite! WOW I have 3 of them and I was all over the place!
Until I learned how to use the sights correctly! And as far as turkish ammo it's fine
its a hotter load and has more of a kick im shooting 1935 yes thats correct! and 1945
all work great they are corrosive and real dirty.

deimos256
February 2, 2011, 03:46 PM
My 1943 German Mauser shoots pretty high also. Now I could have just had a bad day, but I could have sworn it was shooting higher at 100 yards than at 50. But of course I could have just been having a bad day.

Float Pilot
February 2, 2011, 05:25 PM
but I could have sworn it was shooting higher at 100 yards than at 50. It was...

It continues to go up, until about 150 meters and then starts back down. If sighted for 300m

deimos256
February 2, 2011, 06:18 PM
Ah ok that makes sense. Not to hijack the thread but I found on brownells a Mauser front sight blank, will it work in any Mauser or only specific ones?

Trevorusn
February 21, 2012, 08:56 AM
From what I've gathered, the M48s were zeroed in at 200 meters, so high at 100 is neither surprising nor shooter error. Funny about the sight hood, I just bought a Mauser M48 BO with no front sight hood, and it looked like it may never have had one. Was this indeed missing from a few, or has it been monkeyed with???

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