What loads and speeds are you getting from your 16"?
This is from a 10twist so not quite on topic. I have a factory 8twist barrel on the rack but haven’t screwed it on yet.
Factory
Monarch 100gr soft point 2700fps
Winchester 58gr v-max 3500fps
Federal trophy copper 85gr 2900fps
Remington 80gr cor lokt 3050
Remington 100gr cor lokt 2750fps
Hand loads
55gr Moly’d Nosler BT 3615fps
87gr Hornady bthp 3028fps
85gr interbond 2934fps
70gr Sierra hpbt 3300fps
88gr Sledge Hammer 2900fps
69gr absolute hammer 3450fps
Aside from the 69gr absolute hammer most of my handloads can be ran faster.