Here is a "head scratcher"...

[Link]

Caliber ?

 

[group therapy]

Loaded 30+ times

lol

 

[ShootDots]

Caliber ?

It is a .300 WSM>>>>however, to a smaller degree, I have the same experience with my 7 Sherman>>>but with somewhat less firings on the cases..

 

[ShootDots]

lol

I have used this brass as "load development" brass while developing a load. Then I have "match" brass for competition. This brass was used in 3 / .300WSM barrels for load development in each AND when we have "abbreviated" matches in the summers here, they also get used for 2 x 20 shot matches. I don't keep exact track of how many firings>>>but it is many, many times loaded and fired..

 

[Sandstorm]

You may just have gotten your moneys worth here my friend.

 

[MGYSGT]

I rechambered my trusty .223 F Class. Used the same reamer as before. Ctgs would stick on opening the bolt. Bought a small base die to solve. Now my ctgs for that gun look like mini .223 belted mags. I tested them and the sticky bolt is gone. They just look funny.