today, just for a matter of interest a target frame was set up at 1000yds.
on the frame 2 new IBS 1000yd BR targets were taped front and rear and spaced around 3-4 inches apart.
given the reasonable conditions, using some guessimation ( and some luck) 2 groups were fired.
not the clearest photo - 105 vld group upper centre 108 HPBT group to right and slightly lower
the 5 shot left hand group are 105 berger vlds
the 6 shot right hand group were berger 108 HPBTs.
following are some close up photos of the paired front and rear paper sections for both groups.
105 vld face target
105 vld rear target
105 vld both targets mounted side by side
108 HPBT face target
108 HPBT rear target
108 HPBT both targets mounted side by side
not that any definite conclusions can be drawn from this simple test but it seems that pin hole random orientations continue to occur for both the 105 VLD and 108HPBT.
for some reason, I was expecting the 108HPBT's (being tangent ogives - I think ??) to possibly provide central or more central pin holes, but as can be seen, this did not occur.
it also appears that projectiles can pass through 1 sheet of target paper, travel about 3-4 inches, and impact the 2nd target face without any apparent keyholing or noticeable enlargement of the bullet holes on the 2nd sheet.
it appears that the pin hole position and orientation for the 1st and 2nd target papers also seem to coincide.
food for more thought and additional questions ????