Hi guys. TBG is hard To get here unless i but it online and TBB is easily available. Right now i got some natural latex band on and the y work good for Target shooting but i would like To get more power and keep the latex band like they are cause my son is able To draw them. At 8 M i hit a soup can and it make a Nice dent but no hole. So here is my question.... What set of TBBLACK OR TBBLUE should i use To put 3/8 steel balls thru a soup can at 8m whit a 80cm draw ?? Thx !