Rangernoob

I am trying to train my range to a decent level, but with so many different weapons and monsters it's hard to know what's best. In the short term I need to gather charms (green or crimson) as 1 more summoning level will give the geyser titan which I believe gives a range bonus. I have tried these so far; Iron knives Crystal bow Magic short Rune crossbow Also have the zammy prayer book. Currently training on the caged greaters (mainly for charms) but it all seems very slow compared to training combat. Should I consider a cannon? Thank you.