Time to sell all your 6.5 creedmoors, there's a new cartridge in town, Hornady 6.5 PRC
If you hunt where the deer are very old, then you can continue to use your 30-30's
If your deer are young, then be advised, none of your cartridges will work anymore.
In all seriousness tho, this looks to be a great cartridge. The 21st century .270 if you will:
https://www.shootingillustrated.com/articles/2018/2/27/review-hornady-65-prc-cartridge/
https://www.hornady.com/ammunition/rifle/6.5-prc-147-gr-eld-match#!/
If you hunt where the deer are very old, then you can continue to use your 30-30's
If your deer are young, then be advised, none of your cartridges will work anymore.
In all seriousness tho, this looks to be a great cartridge. The 21st century .270 if you will:
https://www.shootingillustrated.com/articles/2018/2/27/review-hornady-65-prc-cartridge/
https://www.hornady.com/ammunition/rifle/6.5-prc-147-gr-eld-match#!/