Do you have an idea about what style and make of bullet you want to use, which powder, what loads and pressures, and not to mention your particular rifle's barrel length ie is it a shorten sporter?

 

Also are talking reload ammo or commercial ammo?

 

Both Lee and RCBS have some pretty cool software, that can plot ballistics curves for damm near ever combo Dave could ever think up, as it has over 35,000 load combos.

 

Especially RCBS' new software as it also assist in the designing of improved cases and any wildcat.  

 

It's called RCBS. Load, there's a video clip here

http://www.rcbs.com/ - http://www.rcbs.com/

 

If you don't like that route, most of the commercial ammo Manf. have a certain amount of ballistic data on there websites

 

this is the data federal lists on it power shok ammo

 

Load Details Load No Caliber Grains/ Grams Bullet Style Brand Use 303AS 303 British 180 / 11.66 Speer® Hot-Cor® SP Power-Shok® document.write(FederalBallisticsDetails.GetUsages('2 ',true));

Velocity in Feet per Second (To nearest 10 FPS) Muzzle 100 Y 200 Y 300 Y 400 Y 500 Y 2460 2206 1966 1744 1542 1363

Energy in Foot Pounds (To nearest 5 Foot Pounds) Muzzle 100 Y 200 Y 300 Y 400 Y 500 Y 2418 1944 1545 1215 950 742

Wind Drift in Inches (at 10 MPH) 100 Y 200 Y 300 Y 400 Y 500 Y 1.2 5.1 12.2 23.0 37.9

Average Range 50 Y 100 Y 200 Y 300 Y 0.1 -5.7 -20.4

Long Range 50 Y 100 Y 200 Y 300 Y 400 Y 500 Y 1.5 2.8 -11.9 -35.3 -73.6

 

and remember divers do it deeper