I did a lot of load development and accuracy testing with my new 6.5 PRC in the first few weeks of owning it and at around the 250rd mark accuracy fell off from consistently .5min to consistently 1.25.min. At first I suspected the scope, but nope, swapping it out with a proven scope yielded the same results. Barrel fouling was not it, as I stay on top of that.
Turned out to be .040" of throat erosion, so I seated the bullets out further to match the original .020" jump and accuracy immediately went back to .5min (or less)
Does this seem excessive to anyone? I am at rd. count 347 now and all is still good...
How about it MuleDeer; ya got any theories? I can't say that I have ever seen this happen so suddenly before. Rifle is a Fierce Fury with a McGowan barrel. Thanks fellas
What bullets were you using? Were they all from the same lot#. Sometimes you get variations from lot to lot...
