Now I realize you have to shoot a rifle to know what the rifle really likes. However I have shoot alot of rifles over the years and normally a load of 100 grains of 3F BP and PRB shoots pretty well. So assuming I shoot a 50 and a 54 caliber PRB with 100 grains of 3F-BP. And a point blank range of 3" either above or below the line of sight. Where would you zero your rifle to attain that 3" point blank range shooting?? And how far out wolud I get with the PRB's and only be 3" low??

I have tried to download two different round ball trajectory programs, but have been unable to. Could somebody run this for me?? And does anyone know of another one I could try to download onto my computer??

I am still trying to decide between a 50 and a 54 caliber in an MZ I am about to order. Thanks, Tom.

HEAD0001

If you know the BC of each of those RB's and the velocity that would be fairly easy to compute...

Here is a ballistic program that Underclocked put up on another forum that might work for you.

http://stevespages.com/zip/pcballistics_18.zip

In a traditional rifle with open sights, you'll never know the difference between where a .50 or a .54 hits with 100grs of powder...

My .54 is 2 inches high at 50 yards, dead on at 75 and about 2 inches low at 100...I wouldn't shoot at a game animal past 125 yards because the ball loses it's kinectic energy pretty fast past 125 yards...I've done quite a bit of competitive shooting past 125 and I'll tell you doping the wind and bullet drop gets mighty tricky with a round ball gun once you get past 125...

Caliber BC
.570 .066
.535 .062
.530 .061
.495 .057
.490 .056
.457 .053
.454 .052
.451 .052
.445 .051
.440 .051
.433 .050
.375 .043
.350 .040

Here is a chart for a .530 ball at 1700 fps with a front sight height of .75 inch above bore center line and with a 50 yard zero.

Range Elevation Velocity
0 yds -0.75 in 1700 fps
25 yds 0.15 in 1448 fps
50 yds 0.00 in 1242 fps
75 yds -1.56 in 1093 fps
100 yds -4.91 in 997 fps
125 yds -10.37 in 928 fps
150 yds -18.19 in 872 fps
175 yds -28.70 in 824 fps
200 yds -42.10 in 781 fps
225 yds -58.88 in 742 fps
250 yds -79.26 in 705 fps
275 yds -103.57 in 671 fps
300 yds -132.53 in 639 fps

HEAD, I really don't know why you're still agonizing over this. If you get the .50 you will always wonder if you should have gone to the .54. If you get the .54 you will never wonder if you should have gotten the .50.

GET THE .54 DAMMIT!!!