I think I've found my answer... Looking at the chart below. at 150+ yards, the drift is 1.5"

shooting chart for a 270 130 gr

Range 0 yds 50 100 150 200 250 300 350 400 450 500
Velocity 3060mv 2950 2840 2730 2620 2520 2420 2320 2220 2130 2060
ft/lbs 2705 ft/lbs 2505 2320 2150 1985 1830 1690 1555 1430 1310 1200
flight-time 0 /sec .05 .102 .155 .211 .267 .328 .39 .454 .520 .586
7½mph/11fps "lead from" ½' 1' 1.7' 2.3' 3' 3.6' 4.3' 5' in-feet
15mph/22fps heart/lungs 1' 2' 3½' 4½' 6' 7' 8½' in-feet
25mph/36.6fps heart/lungs 2' 4' 6' 8' 9½' 12' in-feet
30mph/44fps heart/lungs 2.2' 4.5' 6.8' 9.3' 11.7' 14.4'
35mph/51.3fps heart/lungs 2½' 5¼' 8' 11' 14' X
Drift@10mph 90° .2" 0.7" 1.5" 2.8" 4.4" 6.5" 9" 12" 15.5" 19.6"
250yd zero -1.5" +1" +2.4" +2.8" +2" zero –3.4" –8.3" –14.8" –23.1" –33.3"