roedeerred
Well-Known Member
You guys who study ballistic info may be interested /able to explain this been given 2 boxes of brass today in norma boxes the info on the boxes say they both had 243 100grains SP semi pointed in them
0 50 80 100 150 200 300m
v 920 832 749 670m/s
e 2752 2248 1822 1462 joule
-4 3 X -32 -102 -381mm
Second box
910 790 680 579
crease in box 1302 1088
-3 X -36 -119 -452
The boxes are obviously from different batches,do all producers test every batch that carefully and therfore change data on the boxes accordingly or is it just down to norma quality.
anyway I have now 40 more norma cases to clean and reload
0 50 80 100 150 200 300m
v 920 832 749 670m/s
e 2752 2248 1822 1462 joule
-4 3 X -32 -102 -381mm
Second box
910 790 680 579
crease in box 1302 1088
-3 X -36 -119 -452
The boxes are obviously from different batches,do all producers test every batch that carefully and therfore change data on the boxes accordingly or is it just down to norma quality.
anyway I have now 40 more norma cases to clean and reload