3006guns
02-10-2009, 12:35 PM
I was loading some 30-06 cast yesterday and running TB through my Uniflow powder measure for the first time (been weighing each one up to this point). I visually checked the first few for powder and everything was looking good, so away we go. Raised the handle on the measure for the next charge and to my astonishment about 5 grains of powder spilled out, all over. I picked up the last case and dumped it into my scale....sure enough, short. Hmmm....emptied and recharged, then continued. Same thing happened again a few rounds later.
I keep my measure clean and have developed the technique of raising the handle BEFORE placing the case under the spout....and this is all that saved me from nearly double charging a round. I verified each individual case with a strong light after this little episode. The Uniflow comes with two spouts, a large and small. I believe the small is installed which may have aggravated the problem.
My point is that evidently Trail Boss, being light, can easily "bridge" leaving a light charge in the last case and waiting to overcharge the next UNLESS you physically "rap" the handle with each movement. Although I've had some bridging with other large grain powders in the past, they were usually heavy enough that they pretty much cleared themselves. TB is another animal altogether. I like the powder, but it's something that needs close attention.
I keep my measure clean and have developed the technique of raising the handle BEFORE placing the case under the spout....and this is all that saved me from nearly double charging a round. I verified each individual case with a strong light after this little episode. The Uniflow comes with two spouts, a large and small. I believe the small is installed which may have aggravated the problem.
My point is that evidently Trail Boss, being light, can easily "bridge" leaving a light charge in the last case and waiting to overcharge the next UNLESS you physically "rap" the handle with each movement. Although I've had some bridging with other large grain powders in the past, they were usually heavy enough that they pretty much cleared themselves. TB is another animal altogether. I like the powder, but it's something that needs close attention.