Use H1000 and save your barrel, it will thank you.
I have been shooting RL33 out of my 28 Nosler with Berger 195's pushing them pretty fast, I have over 800 rounds down the barrel and its still shooting good and I have wooped on this barrel pretty hard doing load development in 100*+ Ca. weather 1 weeks before a hunt. I shot 250 rounds down the barrel in 3 range trip, I wanted to make sure the barrel speed up before my out of state hunt. I had to put a wet towel on my barrel to cool it between strings. The N570 was the biggest killer of 28 Nosler barrels along with people chasing speed not knowing when enough is enough,lol. I shoot mine at 3150fps with a 195's and a 28" barrel and I would see guys using them at that speed with a 26" barrel and wonder why they are burning up barrels, bottom line there is no free lunch. If you shoot them at 3050fps to low 3100's they will last but not with N570.