08-09-2011, 08:42 PM
I have a .270 BLR that gets lots of copper when I use Speer TNT. Accuracy goes from 1.3 moa to 5-6 or worse if I don't clean it after 40-50 rounds. I run those bullets at aboiut 3200 instead of the 3400 I could get.
He might get badly fouled if he's got a rough bore and used something like the old all-copper bullets that have a big reputation for fouling the bore. Especially true if he tried a lighter, higher velocity, bullet for his first box.
Now, make no mistake, I wasn't there so can only speculate.
But, if you do see the gentleman again and the topic comes up he could probably make productive of a list of things to check and do.
He might get badly fouled if he's got a rough bore and used something like the old all-copper bullets that have a big reputation for fouling the bore. Especially true if he tried a lighter, higher velocity, bullet for his first box.
Now, make no mistake, I wasn't there so can only speculate.
But, if you do see the gentleman again and the topic comes up he could probably make productive of a list of things to check and do.