Originally Posted by freebird63
I see that hornady makes a 6.5X284 winchester brass and lapua makes a 6.5X284 norma brass. Is there any differences between the 2
Yes there can be differences.
From what I gather,
Winchester never made a 6.5x284, reloaders made it.
Being a wildcat, it had many versions with different shoulder angles and clearances/reamers.
~2001 Norma officially introduced it with a 35deg shoulder and it was accepted into SAAMI.
Unless holding the reamer and with a plan to form brass(like so many have), I would steer clear of a 6.5x284Win, and head for the official 6.5x284Norma. And I would use Norma or Lapua brass, to remove forming efforts (if satisfied with the Norma design).
I'm sure others here know a lot more about this cartridge, as I've never had one.