I have an 1896 .30-40 carbine, and have found that the only way I have an ajustment to the horizontal bullet strike on the target is to just "tap" the front sight in the direction you want the bullet to strike the target. My rifle is "sighted in" to be on target at 200 yards when using 180 gr. "core-loks". I figured the Army had taken this into consideration when having the rear sight set for 300yard battle sights. I hold the front sight at the 6 o`clock position on a 6" Bulls Eye at 200 yards, and, even at my age of 69, manage to get acceptable results in the "bulls-eye". Plenty good for "White Tails" in this area. ( Don`t figure these carbines and rifles were intended for target rifles).
Impossible to answer without knowing the type of scope, the scope mount it is in and the weapon it is on.
You use the turrets on the side and top of scope. The adjustment caps screw off, the one on top of the scope is the Vertical, the one on the side is the Horizontal adjustment. You can use a dime to insert into slot, or a screwdriver...but a dime or penny works best.
A Krag Jorgensen in 30/40
300 USD or so
http://en.wikipedia.org/wiki/Krag-J%C3%B8rgensen
JUST BOUGHT ONE FOR $1000 AND I STOLE IT THEY RUN ABOUT $2000 IF REAL CLEAN
There are entire books devoted to this- and Wikianswers cannot reproduce a book- but the link at the bottom of this page will take you to a good Wikipedia article on the Krag rifles- with links to more material from there.
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Contact the maker for a set of instructions.
The sights.
Best to ask a gunsmith for assistance
19 is what percent of 3040= 19 / 3040= 0.00625Converting decimal to a percentage: 0.00625 * 100 = 0.63%
To adjust the sights so that they are aligned with the spot that the bullet hits.
To adjust the sights so that they are aligned with the spot that the bullet hits.