Problem with my 30/30 sights.

[Auburn1992]

I went to the range yesterday to sight in a couple of my my deer rifles. One of these was my Marlin 30as 30/30 (cheaper version of the 336). I was using the iron sights, and adjusted them all the way down. The problem is that they are still 1.5~2 inches high at 50 yards.

What range will the bi sighted in at if it is 2 inches at 50 yards?

Anything I can do to adjust them lower?

Thanks, Auburn.

 

[rcmodel]

With 170 grain bullets 2.0" high at 50 will give you a 185 yard zero.

With 150 grain bullets 2.0 high at 50 will give a 200 yard zero.

Your only option would be to change to a slightly higher front sight if you want a perfect 50 yard zero..

But on the otherhand, a 200 yard zero with open sights is just about perfect for the 30-30.

The bullet would never be more then about 3 1/2" from line of sight from the muzzle all the way out to 200+ yards.

You see deer hair in the sights, the bullet is going to hit it.

rcmodel

 

[Ringtail]

You didnt say what bullet weight so I looked up 150 gr. .30 roundnose and according to the drop tables in two of my reloading manuals +2" at 50 yards will put you +4" at 100 yds. and dead on at 200yds. Thats assuming a mv of 2300 fps. I sight in my .280 Rem. (140 grain bullet at 3022 fps) +3" at 100yds. so that I don't have to worry about hold over out to about 275 yards. A deviation of 3" on a deer never caused me to miss. If you think you want to sight your rifle dead on at a closer range than 200 yards you can get a higher front sight. Raise the front sight to lower the point of impact, lower the front sight to raise the point of impact - just the opposit of what you would do with the back sight.

The best thing to do is shoot you rifle at different ranges and see what your bullet drop actually is rather than using a balistic table or worse yet, taking the advise of a total stranger on the inernet

 

[Shawnee]

rn 150 gr., .218 B.C. www.hornady.com

175yd. "zero"

Range (yards) Muzzle 50 100 200 300
Velocity (fps) 2350 2168 1994 1673 1397
Energy (ft.-lb.) 1839 1565 1324 932 650
Trajectory -0.8 2.0 2.9 -2.3 -20.1


2" high at 50yds. is a pretty useful sighting.

 

[351 WINCHESTER]

You can take a triangle file to the rear sight with the range with you and file it down and shoot it until you get your desired poa. By doing this you will have quicker sight acquisition also as most factory sights are too narrow. Or you could remove the rear sight elevator and cut a deeper notch in it.

If it were my gun I'd get one of the new light gathering front sights from williams or truglow, but make sure you get one a tad taller. Just remember when you have to make a quick shot on a deer, always aim low.

 

[Old Time Hunter]

Try a 6 o'clock hold.

 

[Auburn1992]

Thanks guys.

 

[SwampWolf]

I'd consider installing a receiver (peep) sight as made by Williams and Lyman- much faster and more precise.