ok heres my problem.. i have just finished my 98th bsrrows trip and i have yet to get a half key barrows item or d med but yet ive had several double brothers on my at once (like having 2 or 3 dharok's atkin me at once) so am i doing something wrong i normally get 14 kills a trip and i havnt gotten anythin in fact ive only had 1 loot tht was over 40k and clue y im so unluckey at these?

It's just bad luck. I've heard of people having dry streaks of over hundreds of runs. Just keep truckin'.

im goin back to clue scrolls lol i always get drops over 200k and like every 3-5 clues i get a drop over 1m

kill count after the 6 brothers only counts towards runes/bolt racks not barrow weapons or armor ive had bad runs 10+ nothing yesterday 3 chest got torags legs friend got guthans plate with 2 all luck usually after 10 trips i stop for the day if i get nothing

Yeah, like others have said, its all luck based. And if you're looking for money, barrows is very inconsistent, and there are more reliable and quicker ways of making money, such as aviansies or green dragons. I do barrows because its fun for me, not for cash (though its a bonus =P). Don't rely on it for cash though.