TABLE II-A
THE TRACE-ELEMENT COMPOSITION OF MANNLICHER-CARCANO 6.5 MM
BULLET LEADS FROM LOTS 6000, 6001, 6002, AND 6003
(INAA results obtained by V.P. Guinn during 1973-1975)
ppm Element Found and Standard Deviation in ppm*
Bullet Sample
Lot No. No. Wt. (mg) Silver Antimony Copper Sodium
6000 A 51.2 11.8 +-0.4 173 +-3 372 +-5 13 +-1
45.6 13.5 +-0.5 261 +-3 167 +-4 15 +-1
------------B------------------------------------------------------------
6001 A 47.9 12.2 +-0.6 158 +-3 (2766 +-16)** 13 +-1
B 57.9 15.3 +-0.5 732 +-5 23 +-2 13 +-1
C 58.5 8.5 +-0.4 1218 +-7 48 +-2 15 +-1
D 47.2 11.6 +-0.4 161 +-3 147 +-4 17 +-1
------------------------------------------------------------------------
6002 A 51.8 9.1 +-0.4 385 +-4 30 +-2 12 +-1
B 52.8 9.7 +-0.4 949 +-6 25 +-2 12 +-1
C 55.3 6.0 +-0.3 24 +-1 120 +-3 15 +-1
D 51.3 8.3 +-0.6 131 +-2 (4516 +-21)** 13 +-1
------------------------------------------------------------------------
6003 A 54.3 15.9 +-0.5 730 +-5 21 +-2 12 +-1
B 44.6 7.9 +-0.4 80 +-2 62 +-2 20 +-2
C 44.7 8.8 +-0.4 464 +-5 36 +-2 17 +-1
D 44.0 8.7 +-0.4 240 +-3 17 +-2 15 +-1
TABLE II-C
HOMOGENEITY MEASUREMENTS ON FOUR SPECIMENS FROM EACH OF THREE
INDIVIDUAL MANNLICHER-CARCANO BULLETS (MADE BY V.P. GUINN,
PNEUMATIC-TUBE CONDITIONS)
Production ppm Element Found plus/minus One Standard Deviation
Lot Specimen Antimony Silver Copper
6001 6001C 1139 +-60 8.5 +-0.4 67 +-11
6001C1 1062 +-60 9.5 +-0.4 (391 +-17)**
6001C2 1235 +-93 10.1 +-0.6 20 +-7
6001C3 1156 +-90 9.2 +-0.5 23 +-10
---------------------------------------
mean: 1148 +-71 9.3 +-0.7 37 +-26
---------------------------------------------------------------------
6002 6002A 358 +-47 9.1 +-0.4 45 +-11
6002A1 983 +-51 10.3 +-0.3 34 +-5
6002A2 869 +-47 9.9 +-0.3 58 +-6
6002A3 882 +-81 10.2 +-0.5 30 +-8
--------------------------------------
mean: 773 +-281 9.9 +-0.5 42 +-13
---------------------------------------------------------------------
6003 6003A 667 +-58 15.9 +-0.5 27 +-10
6003A1 395 +-54 9.6 +-0.4 28 +-6
6003A2 363 +-39 8.3 +-0.3 (257 +-12) **
6003A3 441 +-51 9.8 +-0.4 16 +-5
--------------------------------------
mean: 466 +-137 10.9 +-3.4 24 +-7
TABLE II-A These are Dr. Guinn's showing variations of antimony, silver, and copper content of individual WCC Mannlicher bullets from the 4 lots he tested. He rightly called the results evidence that Mannlicher ammunition had no homogeneity from lot to lot or bullet to bullet.
TABLE II-C The results of Dr. Guinn's tests on 4 fragments from each of 3 individual WCC Mannlicher bullets. He cited these as evidence of intra-bullet homogeneity. Note huge variations in antimony content, especially in bullets #6002 and #6003. Note also large variances in silver and copper content. Compare these with Table III in Appendix B. It appears that Dr. Guinn based his key conclusion about homogeneity on the fragments of these three bullets.
Comparison of Tables II-A and C (1) Selected fragments from each of the 3 bullets tested varied from one another more in their antimony content (Table C) than did the 2 whole bullets tested from Lot #6000 (Table A); (2) Selected fragments from bullet #6002 varied from one another more in their antimony content (Table C) than did 3 of 4 whole bullets tested from Lot #6001 (Table A); (3) Selected fragments from bullet #6002 varied from one another more in their antimony content than did 2 of 4 whole bullets tested from Lot # 6002 (Table A); (4) Selected fragments from bullets #6002 and #6003 varied from one another more in their antimony content than did 2 of 4 whole bullets tested from Lot #6002 (Table A); (4) Selected fragments from bullets #6002 and #6003 varied from one another more in their antimony content (Table C) than did 3 of 4 whole bullets tested from Lot # 6003 (Table A
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