I have personally witnessed two "bouncebacks" from bowling pins, one striking me in the chest. Left a small bruise. This was in November in IL and about 35degrees F. 40 S&W, truncated cone.
We quit shooting pins at temps below sixty degrees as the vinyl skin got too hard.
Saw dirt kicked up to one side or other mainly from glancing hits from roundnose bullets.
I only used sharp shouldered semiwadcutters and had no problems.
