round ball ballistic calculator

[corey012778]

I am passing this along from another site. I don't know if any has posted this but I going to do it any lol

http://www.ctmuzzleloaders.com/ctml_...allistics.html

[corey012778]

forgot, you need to download it

[rafsob]

Don't think this would work for us guys with Macs...

[Muley Hunter]

Link doesn't work on Chrome.

[cayugad]

Weights and BCs of common lead round balls.

....SIZE....BC....WEIGHT.......................... ..........
0.310-- 0.043 - 46gr
0.315-- 0.044 - 48gr
0.350-- 0.049 - 64gr
0.375-- 0.053 - 79gr
0.440-- 0.062 - 129gr
0.451-- 0.064 - 138gr
0.454-- 0.064 - 141gr
0.490-- 0.068 - 177gr
0.530-- 0.075 - 224gr
0.570-- 0.080 - 277gr

you can punch these numbers into most ballistic calculators and guess at the velocity. This will give you some idea of what that roundball is doing. And don't let the numbers scare you. If you go by the rule of X foot pounds of energy at X distance, then you would never hunt with one.

[Muley Hunter]

Kind of sad in the BC department.

Good thing we aren't trying to hunt them at 200yds.

[Semisane]

If you use the weights and BCs supplied by Cayugad, and the ballistic calculator linked below, you will get very good results without having to download something into your PC.

http://www.handloads.com/calc/

If you don't know the velocity of your load, use the GOEX chart below for a ballpark figure. It pretty well matches my chronographed loads.

http://www.goexpowder.com/load-chart.html

If you play around with that calculator and those figures, you find that a .490 ball over the recommended max charge of 100 grains of FFg and a .530 ball over the recommended max charge of 120 grains of FFg have almost the same trajectory, with the .490 having 520 ft. lbs. of energy at 100 yards and the .530 balls having 633 ft. lbs.

At 125 yards the energy levels are 431 and 531 respectively.
At 150 they are 374 and 462.