Get a media separator like this :
Frankford Rotary Separator Kit
Fill the bucket with water, empty the tumbler contents into the separator and rotate a few times, all the pins fall to the bottom. The tip out 95% of the water from the bucket, then tip the bucket which has got all the pins in it back into the tumbler. You'll be able to count on one hand the number of pins you lose, if you do it this way
@12'00
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