Pressure Test for 19gn Red Dot

[J.B. Books]

Originally Posted by John Dallas

Tom Armbrust ran test on the effect on velocity from hulls which were new, once fired, up to about 10 reloading. Lowest velocity was the new hull. He theorized that the fired hulls were scuffed up from the firing, and created higher pressures/velocity from the reloads

I think this is the article about that test, loading various hulls up to 12 times. As far as I can see pressure and velocity stayed pretty consistent from new to loaded 12 times for most of them.

http://www.armbrust.acf2.org/caselife.htm