i never really did enough testing to fully determine the effects. on the day we noticed a difference we conducted 4 or 5 groups of 4 shots at 100 and 500 yards. the rifle in question is my friends remmy 700 5r but we alsotested with my rem 700 xcr LR. i know that there might be some question about a factory rifles consistency when it comes to load development but i personally feel very confidant after seeing what these rifles do with hot heavily fouled barrels. testing was done on the same day by both shooters.

while talking with my friendhe brought up a good point, lapua brass doesn't run well through my die (full length) and it is possible that neck tension isnt perfect because lapua is so tight through the die where as the thin walled hornady runs smooth. he is buying new dies as soon as the are locally available.