10-02-2022, 04:05 PM
http://www.65grendel.com/forum/showthrea...8oz-buffer
I can't say it is somewhat "common" -- hope I didn't say that earlier... and the thread link is above, mostly as it discusses Lapua and other brass's construction down at the case head/wall interface.
Case stretching is a common occurrence for resized brass, although it should not be much if resizing is done correctly, nonetheless some stretching will occur. Usually that occurs at the weakest spot, which seems to be a juncture more or less between the base/web area and the walls. Many brass style have a thickened material down there but Lapua's is more of a non-thickened, more or less straight transition at same or similar thicknesses to the wall. With a small base die, that die constricts the brass and casing all the way down to that area, but a regular die eases up down at that area... hence the name "small base die".
In OP's case the 2 things IMO, add together for his trouble. Other brasses may exhibit the same thing w/ small base die but after more firings, vice 1 or 2.
My thinking, anyway.
I can't say it is somewhat "common" -- hope I didn't say that earlier... and the thread link is above, mostly as it discusses Lapua and other brass's construction down at the case head/wall interface.
Case stretching is a common occurrence for resized brass, although it should not be much if resizing is done correctly, nonetheless some stretching will occur. Usually that occurs at the weakest spot, which seems to be a juncture more or less between the base/web area and the walls. Many brass style have a thickened material down there but Lapua's is more of a non-thickened, more or less straight transition at same or similar thicknesses to the wall. With a small base die, that die constricts the brass and casing all the way down to that area, but a regular die eases up down at that area... hence the name "small base die".
In OP's case the 2 things IMO, add together for his trouble. Other brasses may exhibit the same thing w/ small base die but after more firings, vice 1 or 2.
My thinking, anyway.