lower the rear sight.
if the rear sight is all the way down and you have a blade front sight filing it down will lower it. but be careful, as you cant put it back
remember those old cartridges are low velocity and sighted on at 50yds will be a few inches low at 100

 

lower the rear sight.
if the rear sight is all the way down and you have a blade front sight filing it down will lower it. but be careful, as you cant put it back
remember those old cartridges are low velocity and sighted on at 50yds will be a few inches low at 100

kweber, Please no. Filing the front sight down will raise the point of impact. The front sight needs to go in the opposite direction you want the poi to move. If you want poi to move down, you raise the front sight.

Try some of the accessory guys regarding getting a higher front sight. I just went thru this with my Mosin Nagant. Most old military rifles like that are sighted in dead on at about 300 yards- combat range. since the rear sight was as low as it would go, I had to raise my front sight. Since it was a circular post, I took some shrink wrap that would just barely fit over it, heated it, and then cut it off to the correct height. YOu can see the results in the enclosed picture for 1oo yard poi and group.

There is a formula as to how high you raise your front sight, and it works right on:: multiply how far off you are in inches by your sight radius in inches; then divide that by the distance to the target in inches; and that will equal how much of a correction you need to make in your front sight:

Let's say you are 6" high at 100 yds (3600 inches), and your sight radius (distance from front sight to rear sight) is 18":

6 X 18 = 108
108 divided by 3600 (100 yds in inches) =.03"

So you would have to raise your front sight 3/100 of an inch.

Last word of advice: be absolutely sure that you have the best load/bullet for that rifle before you adjust the sights. Until then just shoot for most accurate group, regardless of where it hits on the target. Then when you have the load you will most often shoot in that gun- ADJUST YOUR SIGHTS. Be careful though, much better to have it too high, and still shoot a bit high, than to have it too low, because it's hard to add to it and make it higher. Some people have used JB weld to that, and that's another option you might consider.

GOOD LUCK- THAT'S THE FUN PART JUST LIKE OUR ANCESTORS DID

 

before you file the front sight.

Make sure the bore is clean. A friend inherited an old 25-20 and it did not shoot well. He gave it a thorough bore scrubbing, including a de-leading procedure. It shot nice and tight after that.....years of build up.

So, before you do any drastic sight changes, you might want to consider the above first.

 

yep jammer, you're right. raise front sight to lower impact. brain fahrt on my part.

 

Add silver solder to the front ight and then file down to the correct height. solderign won't get anything hot enough to hurt and it gives you something to work with. take the sight off if possible. or use a small flat file or triangle file to file the blade on the rear. mind you your taking off thousandths so go slow with a very fine file.

 

Make sure the rear sight is all the way down. Then think maybe it is adjusted to be zero at 100 yards that would probably put it about 5 inches high at 50.. Regarding the front sight jammer corrected it it needs to be taller..

 

The 25-20 really isn't a deer cartridge. Hope that if you use it you will realize the limitations and shoot only a target at close range.

 

It has a really slow muzzle velocity with 86gr sp. according to my ballistics software with a 100 us zero you should be 1.5 inches high at 50 and 7 low at 150. This round is only good for target or varmint. Has very little punch even at the muzzle.

 

Add silver solder to the front ight and then file down to the correct height.

That will work but ordering a **** that's a t ang mounted peep sight for the rifle will solve your problem and give you plenty of room for raising or lowering the bullet impact.

That's what I did with a model 92 Winchester in .25-20.

TH

 

I don't use it for deer, just for varmits and such. I was only curious as to why it was shooting so high and I was unable to adjust. After reading all the posts I believe I am too close to the target and should back up and give it a shot. Thanks for all of the help. The last time I bought ammo for it was late 90's from Carter's Country on IH-10.

 

Jammer, your Mosin shoots great. I got one a few months ago and it shot very high. Smith sights makes an adjustable Mosin front sight; post screws up or down. I really enjoy shooting it. Do you handload for it?

 

Yes,here's the recipe:

1.303 caliber (.311" diameter) 174 gr hpbt match sierra. bullet # 2315
the mosinS are a bit larger than .308, but mike your bbl to make sure
2. Sellier Bellot or Winchester brass
3. 42.4 gr VV 135
4. 210 primers
5 coal 3.0"

Sellier Bellot loaded ammo with their 174 gr bullet, has the exact POI.

I haven't chronoed this load yet, but I think the load is max for that caliber, plus it shoots so well, I don't think I'll mess with it.

GOOD LUCK,

THE JAMMER

 

thanks Jammer. I handload but I don't know if I'll get around to handload for the Mosin. I'd like to shoot a hog with it and would like to find some soft points instead of FMJ but I suppose if I can get a head shot it doesn't make much difference.

 

Might try a scope, I borrowed a buddies 32/20 for a few days, lots of fun to shoot, shot 4 fox, 1 bobcat, and a nice buck.