You can cut down rifle cases that you pick up at the range as well. I know that you are limited in what you can get there. Find a couple of pieces of rifle brass left at the range. Cut it down with a pipe cutter, or hack saw blade. File the top smooth, then chamfer, and deburr it. Even steel cases of 7.62x54R can be cut down. Use your powder funnel to pour the powder into the case. Mark a line above where the powder fills. Cut the case down. Then refill the case, use a file to get the case down to where you want it. Then use a piece of wire from a paper clip, or coat hanger. Solder it on for a handle you are good to go.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.