Other way mate likes of Barnes and gs custom projectiles with more grooves have less engraving pressure so can load higher go faster for same pressures.
Gmx have a couple in them and nosler etips have none hard projectile engraves hard and puts pressure back up.
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Here's some ejector marks I got in my 6.5-55ai. I have lapua brass now though so will see if I can go back to that charge of powder and not get the marks
Edit: What you can't see also is loose primer pockets, Fresh primers can be put in by hand and knocked out just as easy. I did measure it but forgot how much bigger they were but it was by a bit
Last edited by Toby; 14-08-2014 at 08:09 PM. Reason: adding
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Yup, not just a shine but a small gouge
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Trying to reach ..260 Ackley speeds eh?:p
Do what ya want! Ya will anyway.
I thought the 6.5 x 55 ai was faster than the .260 ai
I get 2950 easy.
What length barrel Toby?
Do what ya want! Ya will anyway.
I'll start another thread
Last edited by Toby; 14-08-2014 at 08:59 PM. Reason: Deleted, starting another thread, soz gibo
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