Mosin accurizing technique

flying squirrel

flying squirrel

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Hello mates!

I am about to ''re-amp'' my 1891/30 1939. As I was doing research I saw there is lots of techniques: free-floating, bedding, finnish technique , etc...

Here is my objective:

- Crisp Trigger
- Between 1 and 2 MOA
- No alteration to the look of the rifle

So! What technique did you used? How it worked? Pictures!?
 
You'll probably find that it shoots high and to the right with rear sight already at the lowest setting. The only fix is to raise the front sight post. Some folks here used a piece of shrink tubing on the top of the post. I wanted something a bit more substantial and removed the sight and drove the post in farther from the bottom. Another option is to order an adjustable one from Josh Smith at Smith Sights on the net. He's a great guy and his sights are well made.
I haven't done any trigger work yet, but there are treads on this forum that cover it pretty well.

The bottom pic is the Smith sight. I really like it.

mosinfrontsight001.jpg

mosinexsniper023.jpg
 
Chumlee Bumsnag said:
You'll probably find that it shoots high and to the right with rear sight already at the lowest setting. The only fix is to raise the front sight post. Some folks here used a piece of shrink tubing on the top of the post. I wanted something a bit more substantial and removed the sight and drove the post in farther from the bottom. Another option is to order an adjustable one from Josh Smith at Smith Sights on the net. He's a great guy and his sights are well made.
I haven't done any trigger work yet, but there are treads on this forum that cover it pretty well.

The bottom pic is the Smith sight. I really like it.

mosinfrontsight001.jpg

mosinexsniper023.jpg
Click to expand...
I sent my Mosin sight to Josh Smith about 2 months ago.He says he never got it. My fault as I just sent it regular mail. Could be the Homeland security got a hold of it. He also claimed that he's considering not shipping to Canada any more as he claims half of them never arrive. I'm waiting for him to reply because since I have no sight at all. I told him to send me one and I'll not hold him responsible if it never arrives. Of course I asked that he send it via USPS and give me a tracking number. let's see what he says.
 
flying squirrel said:
What about bedding vs free floating barrel?
Click to expand...

Do not free float the barrel it will shot worse. Make sure the barrel is up to the task, make sure the bedding is correct, tune the fit of the sear to the cocking piece to lighten trigger ( making sure you have enough sear engadgement to prevent accidental discharge), make ammo to suit your rifle. In that order.
If you start with a bad barrel, you are wasting your time.
 
I can do one better than that. Leave the front sight alone and shoot cast. Then, you can count yourself among the exhaulted few who succeded without changing a damned thing on the rifle.
 
I'm not going to drag up the bayonet on-off debate again, but I believe the OP's intentions were to shoot 1-2 moa. I guess that's possible without sight adjustments if you're using a large target at a consistent range and can return to the same point of aim every shot.
Adjusting your aim a foot left and a foot low doesn't make someone "one of the exalted few" in my books. It just makes them shooting a poorly sighted firearm.
 
Actually if you shoot cast at sane velocities, the shooting high problem disappears altogether & the shooting to the right is greatly reduced.
 
I am shooting nices groups 1-1.5 inch at 100 metres just reloading 170 gr 303 bullet .312 OAL to fit mag with a jump of 0.010 to the lands at 2.995 inch, did nothing else, easy 4 inch groups at 300 metres, a good barrel and a good tailored load is all you need... JP.
 
Those rifles were adjust for the six o'clock hold, shooting as soon as it was over your sight... JP.
 
caramel said:
I am shooting nices groups 1-1.5 inch at 100 metres just reloading 170 gr 303 bullet .312 OAL to fit mag with a jump of 0.010 to the lands at 2.995 inch, did nothing else, easy 4 inch groups at 300 metres, a good barrel and a good tailored load is all you need... JP.
Click to expand...

4 inch groups out of a crusty old Mosin at 300 meters with irons you say?
 
I dont know about yours but mine sure aint crusty and yes this kind of shooting from the bench is made on a regular basis, will get target on for you sir... JP.
mosin003.jpg
[/IMG] Sorry about the focus, this was shot from the bag at 300 metres with nothing else than my handload this group is 4.5 inch... JP
 
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The trigger tends to have a lot of creep. Sear engagement can be reduced by putting a shim under the trigger par, under the receiver.

NagantTriggerAfter.jpg


No rifle is damaged by this shim. This rifle took a piece of credit card palstic to do the job. The trigger bar tends to hold the shim in place. I just anchored it with a dab of contact glue.

My repro sniper is running just under 1.5 minutes at the moment with .312 Match kings and Hornady RN. I bedded the action and use a free floated barrel except for up pressure at the muzzle.

My eyes are not good enough to use an open sight.
 
desporterizer said:
Actually if you shoot cast at sane velocities, the shooting high problem disappears altogether & the shooting to the right is greatly reduced.
Click to expand...

I'm sure casting your own bullets and working up loads does work. I've never cast so I'll take your word for it. If you're not doing this, a sight adjustment is the obvious way to go. Now the OP has two options.
 
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