Dont ever stop! I use alot of lead in a month, alot more than i used to since going to 250 grainers, they drain a pot quick. I never stop and constantly seek it every week and sometimes more frequently. I picked up 2- 5 gallon buckets today for my usual $15.00 a bucket. More iron in them nowadays than even last winter so less lead and more **** to sort out. It will get worse and the price will continue to go up and the amt of lead in them will dwindle away. Get it while you can and where you can. It will get harder to get, it already has. Used to be free most places. No such thing as to much. You can always sell it or trade it. Some may say its a hoard, i call it a good start.
Lab