Thread: Pressure / barrel speeds?

Originally Posted by BRADS

Someone will no the proper answer but this is my basic understanding.
Some of the longer double banded (Barnes pills?)create way more pressure than the same weight in other pills,
Has caught a few out

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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