some years ago i read in the fowling shot about aa2200. i believe that the article was about using this powder in a 45-70. shortly after this i encountered some of this powder at a gun show. i purchased a jug. tried it in the 45-70 and found that it was position sensetive. ie. if i held the rifle pointed down and then fired the rifle level versus holding the rifle up and leveling it to shoot there was a lot of difference and a lot of unburnt powder. so i abandoned this but later questioned using it in a 38-55. i called accurate using the 800 number on the jug and ask. the person i talked to said they had not worked up info on the 38-55. he ask what bullet and weight and in a short time told me where to start. i uses this data with acceptable results in a lever gun. m-94 win. cch. i have said all this to ask this question. IS THIS POWDER CORROSIVE? last week i decided to load ;and shoot this gun some and after i cleande the gun. while looking down the bore i seem to see something i could not clean out. i have one of those $40. bore scopes that lets you see a short way down the bore and it looked like there had been a termite in there and etched some of the metal away. no rust just a etched out spot. i am sure there was a time when this rifle was shot and not cleaned for a few weeks.
a fellow shooter told me that his son was in the military and they shot 30cal and 50 cal machineguns. they were instructed to clean the weapons imediately after a range session as the powder was corrosive.
any thoughts on this.