Sighting a Swiss K31

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ping

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I got my Swiss K31 last week and was excited about shooting it. I decided to take a chance and shoot it at 100 yard thinking I am sure to hit paper. Well I shot 3 shots and nothing so i moved to 50 yards. I then hit paper but at the very edge of the target. Elevation was fine. Was using an SR 100 yard target. So I decided to tweak the front site by moving it forward which would make it go to the right. (me needing shots to go to the left). I kept adjusting and adjusting and now the front site is past the front edge of the site holder and i still need to go to the left 6 inches or so. This is at 50 feet. The rifle is in really good shape and all. Does anyone have any ideas what i can do or if i am doing something wrong. This is my first K31 and it sure seems to be a sweet rifle. Windage - need help. Just for info i am shooting norma brass with sierra 168 hpbt with imr4895 43 gr. coal 2.90. i have no problem loading etc. ammunition fired flawless. all looks good. just need windage adjusted. groups were great just need to go to the left. :) Thanks
 
You have used all your front sight adjustment and are still off by 6 inches at 50 yards. :eek:

You are really hosed!

There might be a way out of this, Mojo sights. Give them a call and see if their rear sight has windage adjustments. If so, this might save the day.

http://www.mojosights.com/index.html#

If that does not work, scope the thing. That will cost more as the better mounts require drilling and tapping.

Take a look at the options here.

http://www.swissrifles.com/sr/sights/index.html
 
Something has to be physically amiss - they just don't get that far off the front sight range. Is the front sight "tower" canted on the barrel?

I'd take off the stock and handguards and get a good look at everything. Good instructions are on the Surplus Rifle site.
/Bryan
 
I always adjust for windage at 25 yds. Then at 100 yds for elevation. 2 inch high is just perfect for 200 yds zero.
 
If you are that far off with the iron sights, a St. Marie clamp on scope mount might be your easiest solution to zero in. No alteration to the rifle and they are rock solid.

gary
 
I am going back to the range Tuesday and try this all over again. Just reloaded so will try again. Will do it at 25 and than at 50 and see how it goes. that site corrector looks really interesting. madcratebuilder - where can you purchase that setup. I wonder how difficult it is to mount. any major modifications. Sure hoping it was just me this week being unfamiliar with a new rifle. we will see. thanks for all the ideas.
 
what is the swiss K31's accuracy potential? i was looking at getting one for a fun shooter do they shoot around 2moa or better? im talking about a plain old surplus rifle no fancy modifications
 
There is a swissrifle forum...they discuss how to tighten the screws properly for best accuracy. Perhaps you have a bedding problem.
 
This isnt about the rifle being inaccurate, its just shooting to the left. if you were to shoot at the same spot, you would have a tight group, it would just not be where you were aiming.

The accuracy potential of a k31 in good shape is better than most shooters can shoot. Generally they will shoot a sub 1.5'' group, and some will even shoot a sub MOA group with surplus ammo.

I would see that the front and rear sights were mounted correctly. let someone else shoot it and see if they have the same problem. I have a friend that was shooting WAY to the side because he was using the sight protectors as a front sight by accident and not the sight itself. after he realized that he was shooting pretty strait.
 
ping, check the Swiss rifle forum

http://theswissriflesdotcommessageboard.yuku.com/directory

for correctors. Also check evil bay. These correctors are a drop in unit and no modification to the rifle. The one in my photo above is a "Sahli" and is a basic elevation only add-on unit.

This is a "Furter" sight corrector, it replaces the oem leaf. It is windage and elevation and is marked out to 500yds.
PICT0021.jpg

The "Grunel" corrector is a two piece system, rear corrector and a new taller front blade. The front blade is a add-on and is well made, clamps on in front of the oem sight.
 
I recently fixed a Mauser for somebody that was shooting of to one side. It turned out that the wood in the stock had dried and warped a little so it was pressing against one side of the barrel. After I relieved the barrel channel, the groups moved 6 inches to the left at 100 yards.

You might want to inspect for a similar problem
 
I'm Suprized nobody has mentioned looking at the muzzle crown. A slight ding in the crown will also mess with point of impact. I had a Mauser that shot way left and the culprit turned out to be a ding in the crown. Pretty easy to fix.
 
Great info guys on checking the wood and the ding on the crown. I am curious though - ding on the crown. when you say crown that is basically right where the bullet comes out correct. so if there is a little ding on the outside of the opening how can that affect the bullet impact. I have heard that but never really understood. and madcratebuilder you are right the bullets are all impacting right on top of each other - just to far to the right. appears to be super accurate. i am also going to look into the "Furter" sight corrector. That looks real nice and i might end up getting it if i cannot correct the situation. i did not get to the range like i planned - darn work. anyway i am going to look and see how difficult it is to remove the stock. shessssh.
 
If the crown is not uniform all the way around, the gas pressure escapes unequally which will tend to tip the bullet one way of the other.
/B
 
i am going to look and see how difficult it is to remove the stock. shessssh
Click to expand...
.

Easy peasy. Remove the two screws holding the floorplate and remove the two front bands via the screws slipping the rear band over the indented spring clip. The front band has a hinge. Lift off handguard and slip the action out.
 
Well i must fess up. I was not using the rear site correctly. For some reason i did not see the little cut out in the rear. I dont know why but I was not using that and aligning it correctly with the front site. real stupid i know but i just wanted to come clean so someone else does not read this and think something is wrong with these rifles or something. it was me. grrrrrrrr.
 
Hey Ping,don't be so hard on yourself.We've all made dumb mistakes. Any one who says they haven't is a liar or believes they're God!
 
We all started off as new guys and the school of hard knocks teaches the best lessons.

There was, may be re-listed, Grunel sight corrector on Gunbroker. That's the two piece unit, rear adjuster and clampon front blade that's taller so you can set your POI at DC at 100 or less yds. Had a few dings but it was cheap compared to a 100% one.
 
hey madcrater - I'm rusty on my Swiss.. is there where to buy in what you posted?
 
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