I like cans cause you don't have to guess if you hit the target or not. If they move you hit it. As far as biodegradable goes I hear melons are wonderful for large caliber. I have not tried anything like that they are to tasty to blow up.
Would love to hear what gear you guys bring.
My favorites in order are
SP101 4.2" - .22lr
SP101 4.2" - .357
SR22P - .22lr
Browning Buckmark Pistol -.22LR
Kimber Target II in .45acp -this is the best gun I have ever shot but just can't get over the cost of shooting it. That is why it is last place
Waiting on my GP100 6" .357 to come in I am sure it will climb to the top of the list.
I try to stick with guns with like ammo cause it starts getting heavy to carry. I stick with .22lr, .38/.357, .233