, 
What I find the steel ball ranges are for for an archery type draw as a roughy guide.1632 Pseudo - 4.5-6mm1632 Double - 6-9.5mm2040 Pseudo - 6-9.5mm2040 Double - 8-9.5mm1842 Pseudo - 9.5mm1842 Duuble - 9.5mm+1745 Pseudo - 9.5mm+1745 Double - 10mm+
For 9.5mm steel I like 1842 black either in single or with 1/3 taper - this also works for hunting if thats your thing.
For BB's 1632 Red - Either single tubes (with a small micrifibre pouch - similar to Liquid Bullet pouches) or with a frame that accepts looped tubes 200-210mm in length with a 50mm pseudo. This is what I do almost 90% of my shooting with. The setup will also handle 6mm steel.
