Here's a chart based on a 6" PBR and 2500 foot elevation using 1200 fps and .3 BC. Energy should be plenty out to 200+ yards but it's dropping pretty fast by then.

Name: .45 Cal, 488 grn
Ballistic Coeff: 0.300
Bullet Weight: 488
Velocity: 1200
Target Distance: 107
Scope Height: 1.500
Temperature: 70
Altitude: 2500
Ballistic Data
~~~~~~~~~~~~~~~
Range Elevation Velocity Energy ETA Drop Max Y 10mph Wind Deflect
0 yds -1.50 in 1200 fps 1560 fpe 0.000 sec 0.00 in -1.50 in 0.00 in
25 yds 1.55 in 1170 fps 1484 fpe 0.063 sec 0.77 in -0.40 in 0.15 in
50 yds 3.01 in 1142 fps 1414 fpe 0.128 sec 3.12 in 0.20 in 0.56 in
75 yds 2.81 in 1117 fps 1352 fpe 0.195 sec 7.14 in 1.24 in 1.25 in
100 yds 0.87 in 1093 fps 1295 fpe 0.262 sec 12.89 in 2.75 in 2.19 in
125 yds -2.89 in 1072 fps 1246 fpe 0.332 sec 20.46 in 4.75 in 3.38 in
150 yds -8.54 in 1052 fps 1200 fpe 0.402 sec 29.92 in 7.27 in 4.81 in
175 yds -16.13 in 1034 fps 1159 fpe 0.474 sec 41.32 in 10.33 in 6.45 in
200 yds -25.76 in 1017 fps 1121 fpe 0.547 sec 54.77 in 13.96 in 8.33 in
225 yds -37.46 in 1001 fps 1087 fpe 0.622 sec 70.28 in 18.18 in 10.40 in
250 yds -51.26 in 987 fps 1055 fpe 0.697 sec 87.90 in 23.00 in 12.64 in
275 yds -67.30 in 973 fps 1025 fpe 0.773 sec 107.75 in 28.46 in 15.10 in
300 yds -85.68 in 959 fps 997 fpe 0.851 sec 129.95 in 34.61 in 17.80 in