I've been experimenting with a method whereby I take enough tobacco to fill the whole bowl, then place in my palm and make a fist (lightly), so 'squeezing it' into a ball/oblong shape and pushing it into the pipe, not too hard, just to below the rim. I suppose its a bit like the stuffing method mentioned above but i happened upon doing it this way myself! The theory in my mind is that because the tobacco is formed/pressed into a clump, all the strands are more 'inter-woven' better, therefore burn more seamlessly. Does that make sence?!
Cheers