What do you mean?
Are you asking if you can fire 6.5-284 ammunition through a rifle chambered in 284?
The answer is yes and no.
Yes, you can fire them. The 6.5-284 ammo will chamber.
No, it won't work well. The 6.5-284 fires a 6.5mm (.264") diameter bullet, while the 284 fires a 7mm (.284")...