DIN 52,290 Part 2, testing of security for bullet resistant
bullet mass
grams grains  striking velocity # of strike spacing firing range
level weapon bullet type m/sec ft/sec stikes mm in meters feet
C1-SF/SA 9mm x 19 FMJ,RN,SP 8 123,5 355 / 365 1165 / 1197 3 X 3 125 / 135 4,92 / 5,31 3 9,8
C1-SF/SA ,357 magnum FMJ,CN,SP 10,25 158,2 415 / 425 1362 / 1394 3 X 3 125 / 135 4,92 / 5,31 3 9,8
C1-SF/SA ,44 magnum FMJ,FN,SP 15,55 240 435 / 445  1427 / 1460 3 X 3 125 / 135 4,92 / 5,31 3 9,8
C1-SF/SA 7,62 x 51 mm FMJ,PN,SP 9,45 145,8 785 / 795 2575 / 2608 3 X 3 125 / 135 4,92 / 5,31 10 32,8
C1-SF/SA 7,62 x 51 mm FMJ,PN,SP 9,75 150,5 800 / 810 2625 / 2657 3 X 3 125 / 145 4,92 / 5,71 25 82
testing   witness plate screen screen 3 samples equilateral sample
50 mm behind spacing placement of size triangle conditioning
2in behind 1m 2,5m from 495/505 mm center of 21/25 deg C
accuary barrel 19,5/19,8 in glass 70/77 deg F
10us 12 hrs.
FMJ full metal jacket
RN round nouse
CN conical nouse SF = no penetration and  no splinters
FN flat nose SA = no penetration and splinters
SP soft point
HP hard point

compatibility with Autotriplex standars advantages of Autotriplex standars
1) primary ammunition types 1) Autotriplex includes 4common types of Soviet ammunition 
2) same number of test samples for qualification  (soviet ammunition is the most common word wide)
3) number of hits and hit spacing 2) Autotriplex stipulation multiple ammunitionsfor selec leves 
4) test conditions/set up similar  (example: Fav standard, Ap)
[this stipulations puts a higher bunden on Autotriplex]
[creates a higher level of sefety for our costomers]
[you can not assume 1 bullet is more lethal than another]
3) Autotriplex specifies a higher / more realistic velocities