The Most Important Error the FBI told the Warren Commission about the Rifle

[Bob Prudhomme]

1. Don't the error figures creep back down eventually? How far does the target have to be for the bullet to come back to the LOS under the 2 scenarios you did above? And how (if at all) does this affect the regular sights, which were supposed to be "zeroed" at some specific number by the manufacturer?

2. What does the chart look like if you make Frazier's 100 yard shots come out "right," i.e. if he can hit 2.5 to 5 inches above at 100 yards, what do the shorter numbers look like?

PS: the FBI said in a report in 1964 that the angle change from "magic bullet" to head shot was actually 3 degrees upward and 1.5 degrees to the right, not left. Still, not much of a lead, if any, would be required, if 1.5 degrees right happens in 2-3 seconds and the bullet makes the journey in 1/10th of a second or so. This particular report from Hoover to the Commission, (dated 1/20/64 Weisberg file 298) has the FBI promoting the idea that the first shot that hit JFK was not the shot that hit Connally, a position it maintained from its first report 12/9/63 to 1/20/64 (at least).

Here are the results of zeroing the rifle at 4 yards. This time, we have chosen 100 yard intervals and taken our maximum range out to 1000 yards.

[TABLE]
RangeVelocityImpactDropToFEnergyDrift[TR]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]2165[/TD]
[TD="width: 50, align: right"]-1.5[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]1686[/TD]
[TD="width: 50, align: right"]0[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]100[/TD]
[TD="width: 50, align: right"]1920[/TD]
[TD="width: 50, align: right"]32.22[/TD]
[TD="width: 50, align: right"]4.32[/TD]
[TD="width: 50, align: right"]0.15[/TD]
[TD="width: 50, align: right"]1326[/TD]
[TD="width: 50, align: right"]1.91[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]200[/TD]
[TD="width: 50, align: right"]1698[/TD]
[TD="width: 50, align: right"]56.43[/TD]
[TD="width: 50, align: right"]18.15[/TD]
[TD="width: 50, align: right"]0.32[/TD]
[TD="width: 50, align: right"]1037[/TD]
[TD="width: 50, align: right"]6.61[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]300[/TD]
[TD="width: 50, align: right"]1498[/TD]
[TD="width: 50, align: right"]68.49[/TD]
[TD="width: 50, align: right"]44.13[/TD]
[TD="width: 50, align: right"]0.5[/TD]
[TD="width: 50, align: right"]807[/TD]
[TD="width: 50, align: right"]15.05[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]400[/TD]
[TD="width: 50, align: right"]1325[/TD]
[TD="width: 50, align: right"]64.96[/TD]
[TD="width: 50, align: right"]85.69[/TD]
[TD="width: 50, align: right"]0.72[/TD]
[TD="width: 50, align: right"]632[/TD]
[TD="width: 50, align: right"]27.74[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]500[/TD]
[TD="width: 50, align: right"]1184[/TD]
[TD="width: 50, align: right"]41.61[/TD]
[TD="width: 50, align: right"]147.08[/TD]
[TD="width: 50, align: right"]0.96[/TD]
[TD="width: 50, align: right"]504[/TD]
[TD="width: 50, align: right"]44.99[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]600[/TD]
[TD="width: 50, align: right"]1082[/TD]
[TD="width: 50, align: right"]-6.43[/TD]
[TD="width: 50, align: right"]233.16[/TD]
[TD="width: 50, align: right"]1.22[/TD]
[TD="width: 50, align: right"]421[/TD]
[TD="width: 50, align: right"]66.6[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]700[/TD]
[TD="width: 50, align: right"]1009[/TD]
[TD="width: 50, align: right"]-83.9[/TD]
[TD="width: 50, align: right"]348.67[/TD]
[TD="width: 50, align: right"]1.51[/TD]
[TD="width: 50, align: right"]366[/TD]
[TD="width: 50, align: right"]91.96[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]800[/TD]
[TD="width: 50, align: right"]954[/TD]
[TD="width: 50, align: right"]-195.11[/TD]
[TD="width: 50, align: right"]497.92[/TD]
[TD="width: 50, align: right"]1.82[/TD]
[TD="width: 50, align: right"]327[/TD]
[TD="width: 50, align: right"]120.48[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]900[/TD]
[TD="width: 50, align: right"]910[/TD]
[TD="width: 50, align: right"]-343.88[/TD]
[TD="width: 50, align: right"]684.73[/TD]
[TD="width: 50, align: right"]2.14[/TD]
[TD="width: 50, align: right"]298[/TD]
[TD="width: 50, align: right"]151.71[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]1000[/TD]
[TD="width: 50, align: right"]872[/TD]
[TD="width: 50, align: right"]-533.7[/TD]
[TD="width: 50, align: right"]912.59[/TD]
[TD="width: 50, align: right"]2.48[/TD]
[TD="width: 50, align: right"]274[/TD]
[TD="width: 50, align: right"]185.46[/TD]
[/TR]
[/TABLE]

As can be seen, the bullet comes back down to the line of sight, and is zeroed again at somewhere just under 600 yards.

Here are the same parameters, only this time zeroed at 5.5 yards;

[TABLE]
RangeVelocityImpactDropToFEnergyDrift[TR]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]2165[/TD]
[TD="width: 50, align: right"]-1.5[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]1686[/TD]
[TD="width: 50, align: right"]0[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]100[/TD]
[TD="width: 50, align: right"]1920[/TD]
[TD="width: 50, align: right"]22[/TD]
[TD="width: 50, align: right"]4.32[/TD]
[TD="width: 50, align: right"]0.15[/TD]
[TD="width: 50, align: right"]1326[/TD]
[TD="width: 50, align: right"]1.91[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]200[/TD]
[TD="width: 50, align: right"]1698[/TD]
[TD="width: 50, align: right"]35.98[/TD]
[TD="width: 50, align: right"]18.15[/TD]
[TD="width: 50, align: right"]0.32[/TD]
[TD="width: 50, align: right"]1037[/TD]
[TD="width: 50, align: right"]6.61[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]300[/TD]
[TD="width: 50, align: right"]1498[/TD]
[TD="width: 50, align: right"]37.82[/TD]
[TD="width: 50, align: right"]44.13[/TD]
[TD="width: 50, align: right"]0.5[/TD]
[TD="width: 50, align: right"]807[/TD]
[TD="width: 50, align: right"]15.05[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]400[/TD]
[TD="width: 50, align: right"]1325[/TD]
[TD="width: 50, align: right"]24.08[/TD]
[TD="width: 50, align: right"]85.69[/TD]
[TD="width: 50, align: right"]0.72[/TD]
[TD="width: 50, align: right"]632[/TD]
[TD="width: 50, align: right"]27.74[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]500[/TD]
[TD="width: 50, align: right"]1184[/TD]
[TD="width: 50, align: right"]-9.49[/TD]
[TD="width: 50, align: right"]147.08[/TD]
[TD="width: 50, align: right"]0.96[/TD]
[TD="width: 50, align: right"]504[/TD]
[TD="width: 50, align: right"]44.99[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]600[/TD]
[TD="width: 50, align: right"]1082[/TD]
[TD="width: 50, align: right"]-67.76[/TD]
[TD="width: 50, align: right"]233.16[/TD]
[TD="width: 50, align: right"]1.22[/TD]
[TD="width: 50, align: right"]421[/TD]
[TD="width: 50, align: right"]66.6[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]700[/TD]
[TD="width: 50, align: right"]1009[/TD]
[TD="width: 50, align: right"]-155.45[/TD]
[TD="width: 50, align: right"]348.67[/TD]
[TD="width: 50, align: right"]1.51[/TD]
[TD="width: 50, align: right"]366[/TD]
[TD="width: 50, align: right"]91.96[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]800[/TD]
[TD="width: 50, align: right"]954[/TD]
[TD="width: 50, align: right"]-276.88[/TD]
[TD="width: 50, align: right"]497.92[/TD]
[TD="width: 50, align: right"]1.82[/TD]
[TD="width: 50, align: right"]327[/TD]
[TD="width: 50, align: right"]120.48[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]900[/TD]
[TD="width: 50, align: right"]910[/TD]
[TD="width: 50, align: right"]-435.87[/TD]
[TD="width: 50, align: right"]684.73[/TD]
[TD="width: 50, align: right"]2.14[/TD]
[TD="width: 50, align: right"]298[/TD]
[TD="width: 50, align: right"]151.71[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]1000[/TD]
[TD="width: 50, align: right"]872[/TD]
[TD="width: 50, align: right"]-635.92[/TD]
[TD="width: 50, align: right"]912.59[/TD]
[TD="width: 50, align: right"]2.48[/TD]
[TD="width: 50, align: right"]274[/TD]
[TD="width: 50, align: right"]185.46[/TD]
[/TR]
[/TABLE]

This time, the bullet comes down to the line of sight at just under 500 yards.

Next we will calculate for a rifle impacting 2.5 inches and 5 inches high at 100 yards. By trial and error, we find this rifle will hit 2.5 inches high at 100 yards if zeroed at 167 yards.
[TABLE]
RangeVelocityImpactDropToFEnergyDrift[TR]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]2165[/TD]
[TD="width: 50, align: right"]-1.5[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]1686[/TD]
[TD="width: 50, align: right"]0[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]15[/TD]
[TD="width: 50, align: right"]2123[/TD]
[TD="width: 50, align: right"]-0.38[/TD]
[TD="width: 50, align: right"]0.13[/TD]
[TD="width: 50, align: right"]0.02[/TD]
[TD="width: 50, align: right"]1621[/TD]
[TD="width: 50, align: right"]0.46[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]30[/TD]
[TD="width: 50, align: right"]2087[/TD]
[TD="width: 50, align: right"]0.57[/TD]
[TD="width: 50, align: right"]0.43[/TD]
[TD="width: 50, align: right"]0.04[/TD]
[TD="width: 50, align: right"]1567[/TD]
[TD="width: 50, align: right"]0.56[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]45[/TD]
[TD="width: 50, align: right"]2050[/TD]
[TD="width: 50, align: right"]1.33[/TD]
[TD="width: 50, align: right"]0.91[/TD]
[TD="width: 50, align: right"]0.07[/TD]
[TD="width: 50, align: right"]1512[/TD]
[TD="width: 50, align: right"]0.73[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]60[/TD]
[TD="width: 50, align: right"]2014[/TD]
[TD="width: 50, align: right"]1.91[/TD]
[TD="width: 50, align: right"]1.58[/TD]
[TD="width: 50, align: right"]0.09[/TD]
[TD="width: 50, align: right"]1459[/TD]
[TD="width: 50, align: right"]0.96[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]75[/TD]
[TD="width: 50, align: right"]1979[/TD]
[TD="width: 50, align: right"]2.3[/TD]
[TD="width: 50, align: right"]2.44[/TD]
[TD="width: 50, align: right"]0.11[/TD]
[TD="width: 50, align: right"]1409[/TD]
[TD="width: 50, align: right"]1.26[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]90[/TD]
[TD="width: 50, align: right"]1943[/TD]
[TD="width: 50, align: right"]2.49[/TD]
[TD="width: 50, align: right"]3.5[/TD]
[TD="width: 50, align: right"]0.13[/TD]
[TD="width: 50, align: right"]1358[/TD]
[TD="width: 50, align: right"]1.63[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]105[/TD]
[TD="width: 50, align: right"]1909[/TD]
[TD="width: 50, align: right"]2.46[/TD]
[TD="width: 50, align: right"]4.77[/TD]
[TD="width: 50, align: right"]0.16[/TD]
[TD="width: 50, align: right"]1311[/TD]
[TD="width: 50, align: right"]2.07[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]120[/TD]
[TD="width: 50, align: right"]1874[/TD]
[TD="width: 50, align: right"]2.23[/TD]
[TD="width: 50, align: right"]6.25[/TD]
[TD="width: 50, align: right"]0.18[/TD]
[TD="width: 50, align: right"]1263[/TD]
[TD="width: 50, align: right"]2.58[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]135[/TD]
[TD="width: 50, align: right"]1840[/TD]
[TD="width: 50, align: right"]1.77[/TD]
[TD="width: 50, align: right"]7.96[/TD]
[TD="width: 50, align: right"]0.21[/TD]
[TD="width: 50, align: right"]1218[/TD]
[TD="width: 50, align: right"]3.16[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]150[/TD]
[TD="width: 50, align: right"]1807[/TD]
[TD="width: 50, align: right"]1.08[/TD]
[TD="width: 50, align: right"]9.9[/TD]
[TD="width: 50, align: right"]0.23[/TD]
[TD="width: 50, align: right"]1175[/TD]
[TD="width: 50, align: right"]3.83[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]165[/TD]
[TD="width: 50, align: right"]1774[/TD]
[TD="width: 50, align: right"]0.14[/TD]
[TD="width: 50, align: right"]12.08[/TD]
[TD="width: 50, align: right"]0.26[/TD]
[TD="width: 50, align: right"]1132[/TD]
[TD="width: 50, align: right"]4.57[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]180[/TD]
[TD="width: 50, align: right"]1741[/TD]
[TD="width: 50, align: right"]-1.04[/TD]
[TD="width: 50, align: right"]14.51[/TD]
[TD="width: 50, align: right"]0.28[/TD]
[TD="width: 50, align: right"]1090[/TD]
[TD="width: 50, align: right"]5.39[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]195[/TD]
[TD="width: 50, align: right"]1709[/TD]
[TD="width: 50, align: right"]-2.48[/TD]
[TD="width: 50, align: right"]17.2[/TD]
[TD="width: 50, align: right"]0.31[/TD]
[TD="width: 50, align: right"]1051[/TD]
[TD="width: 50, align: right"]6.29[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]210[/TD]
[TD="width: 50, align: right"]1677[/TD]
[TD="width: 50, align: right"]-4.18[/TD]
[TD="width: 50, align: right"]20.15[/TD]
[TD="width: 50, align: right"]0.33[/TD]
[TD="width: 50, align: right"]1012[/TD]
[TD="width: 50, align: right"]7.27[/TD]
[/TR]
[/TABLE]

However, we now find that the bullet is .38 inches below the line of sight at 15 yards, not the 2.5 - 4 inches above the line of sight claimed by Frazier.

Frazier is not telling the truth.

If we zero the rifle at 220 yards, we now find the bullet impacting 5 inches high at 100 yards:

[TABLE]
RangeVelocityImpactDropToFEnergyDrift[TR]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]2165[/TD]
[TD="width: 50, align: right"]-1.5[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]0[/TD]
[TD="width: 50, align: right"]1686[/TD]
[TD="width: 50, align: right"]0[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]15[/TD]
[TD="width: 50, align: right"]2123[/TD]
[TD="width: 50, align: right"]-0.01[/TD]
[TD="width: 50, align: right"]0.13[/TD]
[TD="width: 50, align: right"]0.02[/TD]
[TD="width: 50, align: right"]1621[/TD]
[TD="width: 50, align: right"]0.46[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]30[/TD]
[TD="width: 50, align: right"]2087[/TD]
[TD="width: 50, align: right"]1.31[/TD]
[TD="width: 50, align: right"]0.43[/TD]
[TD="width: 50, align: right"]0.04[/TD]
[TD="width: 50, align: right"]1567[/TD]
[TD="width: 50, align: right"]0.56[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]45[/TD]
[TD="width: 50, align: right"]2050[/TD]
[TD="width: 50, align: right"]2.45[/TD]
[TD="width: 50, align: right"]0.91[/TD]
[TD="width: 50, align: right"]0.07[/TD]
[TD="width: 50, align: right"]1512[/TD]
[TD="width: 50, align: right"]0.73[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]60[/TD]
[TD="width: 50, align: right"]2014[/TD]
[TD="width: 50, align: right"]3.41[/TD]
[TD="width: 50, align: right"]1.58[/TD]
[TD="width: 50, align: right"]0.09[/TD]
[TD="width: 50, align: right"]1459[/TD]
[TD="width: 50, align: right"]0.96[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]75[/TD]
[TD="width: 50, align: right"]1979[/TD]
[TD="width: 50, align: right"]4.17[/TD]
[TD="width: 50, align: right"]2.44[/TD]
[TD="width: 50, align: right"]0.11[/TD]
[TD="width: 50, align: right"]1409[/TD]
[TD="width: 50, align: right"]1.26[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]90[/TD]
[TD="width: 50, align: right"]1943[/TD]
[TD="width: 50, align: right"]4.73[/TD]
[TD="width: 50, align: right"]3.5[/TD]
[TD="width: 50, align: right"]0.13[/TD]
[TD="width: 50, align: right"]1358[/TD]
[TD="width: 50, align: right"]1.63[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]105[/TD]
[TD="width: 50, align: right"]1909[/TD]
[TD="width: 50, align: right"]5.08[/TD]
[TD="width: 50, align: right"]4.77[/TD]
[TD="width: 50, align: right"]0.16[/TD]
[TD="width: 50, align: right"]1311[/TD]
[TD="width: 50, align: right"]2.07[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]120[/TD]
[TD="width: 50, align: right"]1874[/TD]
[TD="width: 50, align: right"]5.22[/TD]
[TD="width: 50, align: right"]6.25[/TD]
[TD="width: 50, align: right"]0.18[/TD]
[TD="width: 50, align: right"]1263[/TD]
[TD="width: 50, align: right"]2.58[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]135[/TD]
[TD="width: 50, align: right"]1840[/TD]
[TD="width: 50, align: right"]5.13[/TD]
[TD="width: 50, align: right"]7.96[/TD]
[TD="width: 50, align: right"]0.21[/TD]
[TD="width: 50, align: right"]1218[/TD]
[TD="width: 50, align: right"]3.16[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]150[/TD]
[TD="width: 50, align: right"]1807[/TD]
[TD="width: 50, align: right"]4.81[/TD]
[TD="width: 50, align: right"]9.9[/TD]
[TD="width: 50, align: right"]0.23[/TD]
[TD="width: 50, align: right"]1175[/TD]
[TD="width: 50, align: right"]3.83[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]165[/TD]
[TD="width: 50, align: right"]1774[/TD]
[TD="width: 50, align: right"]4.25[/TD]
[TD="width: 50, align: right"]12.08[/TD]
[TD="width: 50, align: right"]0.26[/TD]
[TD="width: 50, align: right"]1132[/TD]
[TD="width: 50, align: right"]4.57[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]180[/TD]
[TD="width: 50, align: right"]1741[/TD]
[TD="width: 50, align: right"]3.45[/TD]
[TD="width: 50, align: right"]14.51[/TD]
[TD="width: 50, align: right"]0.28[/TD]
[TD="width: 50, align: right"]1090[/TD]
[TD="width: 50, align: right"]5.39[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]195[/TD]
[TD="width: 50, align: right"]1709[/TD]
[TD="width: 50, align: right"]2.38[/TD]
[TD="width: 50, align: right"]17.2[/TD]
[TD="width: 50, align: right"]0.31[/TD]
[TD="width: 50, align: right"]1051[/TD]
[TD="width: 50, align: right"]6.29[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]210[/TD]
[TD="width: 50, align: right"]1677[/TD]
[TD="width: 50, align: right"]1.05[/TD]
[TD="width: 50, align: right"]20.15[/TD]
[TD="width: 50, align: right"]0.33[/TD]
[TD="width: 50, align: right"]1012[/TD]
[TD="width: 50, align: right"]7.27[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]225[/TD]
[TD="width: 50, align: right"]1646[/TD]
[TD="width: 50, align: right"]-0.57[/TD]
[TD="width: 50, align: right"]23.39[/TD]
[TD="width: 50, align: right"]0.36[/TD]
[TD="width: 50, align: right"]975[/TD]
[TD="width: 50, align: right"]8.34[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]240[/TD]
[TD="width: 50, align: right"]1616[/TD]
[TD="width: 50, align: right"]-2.47[/TD]
[TD="width: 50, align: right"]26.91[/TD]
[TD="width: 50, align: right"]0.39[/TD]
[TD="width: 50, align: right"]939[/TD]
[TD="width: 50, align: right"]9.5[/TD]
[/TR]
[TR]
[TD="width: 50, align: right"]255[/TD]
[TD="width: 50, align: right"]1585[/TD]
[TD="width: 50, align: right"]-4.68[/TD]
[TD="width: 50, align: right"]30.74[/TD]
[TD="width: 50, align: right"]0.42[/TD]
[TD="width: 50, align: right"]904[/TD]
[TD="width: 50, align: right"]10.75[/TD]
[/TR]
[/TABLE]


Now we find, with the rifle zeroed at 220 yards, the bullet to be .01 inch below the line of sight at 15 yards, not the 2.5 - 4 inches above the line of sight claimed by Frazier.

Frazier is not telling the truth.

Your questions in your post script are very confusing, and I do not see what relevance they have to the topic of this thread.