I was discussing the erosion of the barrel on my Axis with a guy and he has a theory that a barrel with a long throat would erode faster than a shorter one. I don't know if this is true but the Axis did erode at a rate nearly 9 times the rate of the other 223.

I also have a fairly good estimate of how many rounds was through it. I didn't start shooting, at least as much as I do now, until fairly recently. I looked at all of the bullets I bought from various suppliers and the total number of bullets is right at 3200. The 3200 would be divided up among three 22 caliber rifles and the Axis was the last one I bought. There is no way it could have over 1500 rounds through it. It has never used factory ammo, everything was handloaded at between min and max load using Hodgdon data. Probably 3/4ths of the time I used CFE 223, probably 20% of the time 3031 and the remainder something else.

Any opinions on the long throat erosion idea?