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Start simple.
Have you re-zeroed the rifle since you "put it back togethor"?
Roe
Effecticve Range of Marlin 39A
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Have you re-zeroed the rifle since you "put it back togethor"?
Roe
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1,146 Posts
His scope should'nt have any affect on his bullets/rifle failure to reach out to 60 yds due to a lack of power when fired which he indicated was the problem, unless I mis-read or misunderstood which I do often. If it was an aiming problem, I would agree with you 100%.
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519 Posts
Those dove-tail mount scopes have a ambit of vibrating loose after a couple hundred rounds. That'll mess up your zero. A 22 zeroed at 50-yards should still be on paper at 63 yards. It should still be on paper at 100 yards depending on the paper. It's ballistic physics.
.22LR Rimfire Ammo Comparison Test within AccurateShooter.com
Has the results of of a massive test of rimfire ammo. BIG difference in grouping between brands. You might not see the difference, though, if you aren't shooting at smallbore targets with target equipment.
"Rifleman's Guide To Rimfire Ammo" has another massive test with different rifles and different chamber types. Generally, you get the accuracy you pay for with rimfires. Higher price ammo, higher-priced rifle, much smaller groups. Moot point around here, nobody has any ammo at any price.
Stan S.
Three possibilities come to mind. 1. Ammo, as others said 22lr's can be REALLY picky about their ammo. 2. Crown issue. Check it out with a magnifier. Even small dings and such can affect performance. 3. Leaded bore. Shine a light through it and check for lead buildup (dull areas in an otherwise bright bore).
If it's dropping out of the sky - then I would be looking at ammo.. The only thing obvious I can think of is shooting collibris or Subsonics/shorts... The extra barrel length can really slow them down a LOT....
I was shooting some super-collibris out of an 18" barrel 22 about 2 weeks ago.. NO issues at all.... Shot them out of a 20" barrel 22... Couldn't get them on paper.. Some hit low, most were in the dirt a couple feet in front of the target. My day with that rifle finally ended when I stuck one in the barrel - about 1" from the muzzle.... Got home and the stuck slug fell out when I touched it with a cleaning rod.. so it wasn't anywhere near stuck hard in the barrel like I was expecting... It just ran out of juice and stopped...
Here's what I would do...
Find some hotter ammo and try that... Make sure it's at least "Standard velocity" 22lr.... but "High velocity" would be a better choice...
Try the stuff with the thicker,waxy coating to seal the barrel better.... like say CCI standard velocity or Green Tags or some of the European ammo that's got the greasy noses...
Leading and badly damaged muzzles tends to spray bullets all over the place... You will hit the target dead center, then the next round will hit 4-feet left... Next one will hit 6 feet low, then the next one goes whizzing over the top of the target and hits high on the backstop....
Thanks
I was shooting some super-collibris out of an 18" barrel 22 about 2 weeks ago.. NO issues at all.... Shot them out of a 20" barrel 22... Couldn't get them on paper.. Some hit low, most were in the dirt a couple feet in front of the target. My day with that rifle finally ended when I stuck one in the barrel - about 1" from the muzzle.... Got home and the stuck slug fell out when I touched it with a cleaning rod.. so it wasn't anywhere near stuck hard in the barrel like I was expecting... It just ran out of juice and stopped...
Here's what I would do...
Find some hotter ammo and try that... Make sure it's at least "Standard velocity" 22lr.... but "High velocity" would be a better choice...
Try the stuff with the thicker,waxy coating to seal the barrel better.... like say CCI standard velocity or Green Tags or some of the European ammo that's got the greasy noses...
Leading and badly damaged muzzles tends to spray bullets all over the place... You will hit the target dead center, then the next round will hit 4-feet left... Next one will hit 6 feet low, then the next one goes whizzing over the top of the target and hits high on the backstop....
Thanks
the rifle ain't "sighted in" at 50 if it ain't on the paper at 63. period. with either standard or high-velocity ammo, the drop between the two is less than an inch. ken waters wrote about two brothers that had identical 32-40s, but one of them said his didn't shoot as far as his brother's did. turned out he had replaced the front sight with a taller one. this is sighting problem, pure and simple.
mind yer topnots!
windy
mind yer topnots!
windy
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1,269 Posts
Boys I went to the range yesterday. I took my BSA Bore Sighting tool and place the rifle in my lead sled, really locked it down. I had perfect sight alignment. Shot the 39a and it was hight and to the left. Made a few MOA adjustments, and got the rifle to hit the centered horizontal line. However, I would not bring in the vertical line to hit center mass. Did check for Lead fouling, nothing found. Crown is fine, but I did notice that the 3 x 9 new scope was not sitting straight on the rifle. I put a rail on the rifle, but the rings do not seem to catch that the scope is straight on the rifle. I am going to work with it today.
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462 Posts
63 yards?
How about 200 yards? You should be able to get good hits all the way out.
Here's my model 39 at the range.
Click the pic to view the video.
How about 200 yards? You should be able to get good hits all the way out.
Here's my model 39 at the range.
Click the pic to view the video.
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747 Posts
We shoot 50-110-200 yds off hand without too much issue.
Aperture front and globe sights works well at all of these distances.
If I'm not mistaken a standard 39A's trigger pull is around 10-12 lbs. sometimes a hair less.
It's pretty difficult to shoot out to 200 yds with iron sights with that trigger pull without working on the sear.
Then you have to give it around 10-12 clicks of left just because of the barrel twist over that distance.
Bullet selections play a huge roll in accuracy with .22's and there's a lot to choose from. Buy a box of everything you can find and
shot it for group. It doesn't matter too much if it hits the bullseye when testing as does shooting the tight group.
Once you find the bullet that your rifle loves go buy more of it and start adjusting for the bullseye.
If you only plan to shoot 60 yds you should be able to shoot inside an inch off a rest. Offhand plan on groups size being larger
with an idea that the more you practice the more the group size will shrink. Eventually your offhand will shoot about the
same size as off a rest. If you plan on shooting coke cans then you will have lots of fun moving the cans around.
Hope this helps
Lp
Aperture front and globe sights works well at all of these distances.
If I'm not mistaken a standard 39A's trigger pull is around 10-12 lbs. sometimes a hair less.
It's pretty difficult to shoot out to 200 yds with iron sights with that trigger pull without working on the sear.
Then you have to give it around 10-12 clicks of left just because of the barrel twist over that distance.
Bullet selections play a huge roll in accuracy with .22's and there's a lot to choose from. Buy a box of everything you can find and
shot it for group. It doesn't matter too much if it hits the bullseye when testing as does shooting the tight group.
Once you find the bullet that your rifle loves go buy more of it and start adjusting for the bullseye.
If you only plan to shoot 60 yds you should be able to shoot inside an inch off a rest. Offhand plan on groups size being larger
with an idea that the more you practice the more the group size will shrink. Eventually your offhand will shoot about the
same size as off a rest. If you plan on shooting coke cans then you will have lots of fun moving the cans around.
Hope this helps
Lp
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