I used to pick up about 15 pounds or so every time I went to the range at odd times so I'm the only one there. Took just a couple of minutes to scrape it up with a trowel from under the metal falling plate targets and scoop into a gallon Ziplock freezer bag.
Now I just get lead from the indoor range where I'm a member. They are glad for me to take it. Just shovel it out of the pit into a bucket (it's a nasty job though) I got about 800 pounds last year, and I only stopped cuz I ran out of buckets.
I need to do that trowel and *small* bucket thing at the indoor range about once or twice a month. Get 40 or 50 pounds on a regular basis instead of trying to do half a ton all at once and hurting myself