I am really digging these rounds we are loading for suppression.....Trailboss powder filling the case to about 90% at 16 grains....using a Sierra 240 HPBT and CCI 200s....MV 1025 and shooting very accurate....just started loading these and I am impressed as at 1025 the bullet has 560# energy at the muzzle....and dead silent.....anybody else loading these rounds??

Do a search for loads in a 300 whisper/308-221Fireball or the newest, 300 Blackout.
I have been shooting 240 SMK suppressed for well over 5 years now and have settled(for now) on Lil' Gun.
I get good repeatability, complete burn and few spikes due to higher ambient temperatures than i did with AA5 AA7 or H110.
You might want to look at the Outlaw Bullet Co for their hunting subsonic 220 or 240 gr bullet or Lehigh Bullet co. for their 175gr specialty brass bullet that you top with a 20 gr. .17 bullet- truly devastating on deer at subsonic velocities.
From a hunting standpoint I have had poor success with most other bullets although some others have reported good luck with a 220 Sierra roundnose that they have filed off the nose on-guess it opens up faster at subsonic speeds.
Other projectiles i have tried, even soft cast lead just pencil right through. You really need to make a head shot or take out the spine with non expanding bullets and the rainbow trajectory makes ranging and shot selection very critical.
Good luck with your new toy- i enjoy mine.

Gary