Just to clear things up I never loaded my rifle indoors. I always load it outside.
The powerbelts in my opinion are loose fitting since I can load them one handed and do not need a starter like I do with all other bullets I have used.
The BH209 is igniting but not all at once like it should be so it is either a pressure issue or primer issue or a little of both. Going to try a different bullet this weekend and see if that makes a difference as well as try and get my hands on one of the new style breech plugs. Figure the breechplug cost about the same as two or three boxes of bullets so its a wash either way.
