Theres probably a better way but this is what i did. I ordered a 'master' map that showed every quad (1;7500 scale) and name of quad in CO from USGS. From that master i was able to pick what quads i needed and ordered the basic paper maps.at the time it was 6or7 dollars per quad.I did this pre PC so i would think it would be fairly easy to get on the USGS web site and go from there.
I really like the delorme topo zone map program. I have been using it for years and is a good tool. yuu can create all kinds of maps. For the $100 i have the whole western united states. Than get the national geographic adventure paper so your maps don't run when rain hits them.
I also have the delorme topo usa and their hand held gps, they both work great. You can download aerials topos etc. onto both. Another option is mytopo.com, you can do a specific area that might run onto 4 or 5 usgs quads and put them onto one map,they can waterproof it and do different layering , they worked out for me in previous years also.
Others have offered up a sighting of roughly 2 inches high at 100 yards as a good sighting scheme. In my own experience I have come to favor a sighting of 3.5 inches high at 100 yards. This allows for the individual to hold dead-on (directly in the middle of the top and bottom) the animal out to roughly 350 yards.
Magnum calibers such as the 7mm Remington and 300 Winchester will extend this slightly. At 400 yards I hold directly on the backbone of the animal. The drop at this range allows the...