thanks Zak i'll try your method when i get home and post the results after a full clip. did i tell you guys how much i love having a range at my house.
the heat difference between my halo and my outback is hard to belive. i understand why it is hotter, but wow that thing will peel off your skin in one clip. it take the out back about 5 clips in my sig to get hot and on my 10/22 it never seems to get hot enough not to touch. i guess all the gas is finished burning before it leaves the barrel.
anyway thanks again for all the help.