Try hanging the tarp like a curtin. It will pile up on the ground below it. This has worked for me, a tarp or old sheet works best. Cardboard or wood will cause it to bounce. Since i don't cast i have only reloaded 32 with 31cal balls. Both acp and 32 long. I may have some mixed .32 brass and dies i might be able round up to trade off.
Finding that brass is hard to find on crushed gravel too.
TK glad you are okay.. ya'll are taking a back seat to Harvey. But we all are praying for snow out there.