+1 on the Appleseed suggestion! If you can hit @ 25yds, you can use the same techniques to hit @ long range.
As a Highpower shooter, we have to use irons. Trust me, there are plenty of guys shooting Expert or higher scores. It's not magic, just finding what works for you (more on this later) and practice, practice, practice. Irons work - we shoot in all weather and I've managed to post some pretty good match scores when it was impossible to see through the spotting scope due to rain or other condensation on the lenses.
I have progressive astigmatism, but it's not as big a deal as you might think. Focus on the front sight post and place it consistently on the fuzzy grey dot on the target line. (Make sure it's the correct fuzzy dot!).
Some folks like a center hold, I prefer a 6-oclock hold (what the Marines call a "lollipop" hold) - the bull sits on top of the front sight post. This seems to be preferred when shooting targets with a black center.
Here's a secret - we cheat! By this I mean we tune our sights for our eyes. I use a .040" rear aperture on my service rifle and 6.8, a .046" on my M4-gery. This can be a handicap in a low light scenario, but that's what the big peep is for. BTW - flipping between the small and large apertures on the AR will change your POI.
The front post on all of my ARs is .052". Some of the AMU guys that have shot with us actually like a wider front post - say it's easier to center the target dot that way. They shoot better scores than I do, so I won't argue. FWIW - the standard post on an M1 is designed to be used as a basic rangefinder - if the post is smaller in width than the person in your sights, use normal sight picture, if not, hold higher.
Knowing your load ballistics will provide your "come-ups" or sight adjustments for various ranges. I zero my battle rifles @ 200yds, as this is the most common distance I shoot at. Depending on your sights/load, a 100yd zero may cause you to run out of elevation adjustment at extreme distance. Also, understand that if you have 1/2 MOA adjustments, the amount of POI shift provided by each click is multiplied by the distance (in hundreds of meters). For example, one click at 100M shifts POI by 1/2", the same adjustment at 200M shifts POI by 1".
After you get all this figured out, then you get to deal with deal with windage, which is a whole other discussion.
Hope this helps...
As a Highpower shooter, we have to use irons. Trust me, there are plenty of guys shooting Expert or higher scores. It's not magic, just finding what works for you (more on this later) and practice, practice, practice. Irons work - we shoot in all weather and I've managed to post some pretty good match scores when it was impossible to see through the spotting scope due to rain or other condensation on the lenses.
I have progressive astigmatism, but it's not as big a deal as you might think. Focus on the front sight post and place it consistently on the fuzzy grey dot on the target line. (Make sure it's the correct fuzzy dot!).
Some folks like a center hold, I prefer a 6-oclock hold (what the Marines call a "lollipop" hold) - the bull sits on top of the front sight post. This seems to be preferred when shooting targets with a black center.
Here's a secret - we cheat! By this I mean we tune our sights for our eyes. I use a .040" rear aperture on my service rifle and 6.8, a .046" on my M4-gery. This can be a handicap in a low light scenario, but that's what the big peep is for. BTW - flipping between the small and large apertures on the AR will change your POI.
The front post on all of my ARs is .052". Some of the AMU guys that have shot with us actually like a wider front post - say it's easier to center the target dot that way. They shoot better scores than I do, so I won't argue. FWIW - the standard post on an M1 is designed to be used as a basic rangefinder - if the post is smaller in width than the person in your sights, use normal sight picture, if not, hold higher.
Knowing your load ballistics will provide your "come-ups" or sight adjustments for various ranges. I zero my battle rifles @ 200yds, as this is the most common distance I shoot at. Depending on your sights/load, a 100yd zero may cause you to run out of elevation adjustment at extreme distance. Also, understand that if you have 1/2 MOA adjustments, the amount of POI shift provided by each click is multiplied by the distance (in hundreds of meters). For example, one click at 100M shifts POI by 1/2", the same adjustment at 200M shifts POI by 1".
After you get all this figured out, then you get to deal with deal with windage, which is a whole other discussion.
Hope this helps...