Hey Guys,
I'm trying to dial in a picky 7PRC build with a proof pre fit and after learning that Hornady Brass can be sub par, I bit the bullet (bad pun) and picked up some ADG brass to work off of. I'm on 3 firings with it now, and surprised that the ADG brass has not grown at all even having been fired 3 times. Using a hornady headspace comparator, the virgin brass measured 1.8905 - 1.8910. After three firings, its still measuring the same at 1.8910, and still seems to chamber without issue. Because of this, I've just been full length sizing the brass with the smallest redding comp shell holder for a .000 shoulder bump (i.e. no bump)
In comparison, Hornady brass after two firings seemed to grow as much as 1.8925 - 1.8930 (which I'm assuming is softer brass). It seems like at this point, it just starts to get tight in the chamber.
So, for all you experienced handloaders out there, does this seem normal? Does it make sense that premium brass wouldn't grow to chamber size after three firings? Also, does it seem strange that virgin ADG brass would only be like 1 -1.5 thou smaller than my chamber right out of the get go? Lastly, if this all seems normal, would you bump the shoulder back .002 or continue to not bump the shoulder until the fired brass doesn't chamber anymore.
Thanks for any insight!!
I'm trying to dial in a picky 7PRC build with a proof pre fit and after learning that Hornady Brass can be sub par, I bit the bullet (bad pun) and picked up some ADG brass to work off of. I'm on 3 firings with it now, and surprised that the ADG brass has not grown at all even having been fired 3 times. Using a hornady headspace comparator, the virgin brass measured 1.8905 - 1.8910. After three firings, its still measuring the same at 1.8910, and still seems to chamber without issue. Because of this, I've just been full length sizing the brass with the smallest redding comp shell holder for a .000 shoulder bump (i.e. no bump)
In comparison, Hornady brass after two firings seemed to grow as much as 1.8925 - 1.8930 (which I'm assuming is softer brass). It seems like at this point, it just starts to get tight in the chamber.
So, for all you experienced handloaders out there, does this seem normal? Does it make sense that premium brass wouldn't grow to chamber size after three firings? Also, does it seem strange that virgin ADG brass would only be like 1 -1.5 thou smaller than my chamber right out of the get go? Lastly, if this all seems normal, would you bump the shoulder back .002 or continue to not bump the shoulder until the fired brass doesn't chamber anymore.
Thanks for any insight!!