The shorter the bullet, the less spin it needs to stabilize. Thus the shorter Bator will stabilize at lower speed than the longer RCBS clone in the same (probably 1-7 to 1-9) twist barrel, but in any event a fast twist AR will stabilize either at speeds that cycle the action. Neither will be "overspun" at speeds likely to give good accuracy for persons just starting out in using cast in AR's. That means.....slow it down.
Here we want "easy" at first, not "advanced." "Easy" is found at a speed that just barely cycles the action and locks the bolt back on an empty magazine, the point being good practice loads that have reasonable accuracy. My own AR's will cycle with a 62 grain bullet at only 1800 fps with around 15 grains IMR 4198 or 17-18 grains H4895. Since powders of this speed are sensitive to position in the case, and shifting position with powder will vary velocity, and varying velocity may prevent the gun from cycling reliably, when flirting with the low end and "easy" results I use dacron to keep the powder in one place.
Velocities may vary up to 200 fps with shifting powder position. Powder forward may result in a failure to cycle when the same amount of powder to the rear near the primer may give perfect function. When the round slams home it tends to throw the powder toward the bullet (forward).
LLA tumble provides ample lube, especially when considering match shooters often lube only the portion above the gascheck and nothing else on the bullet, even at 2700 fps speeds. I sometime tumble lube myself and have no issues doing so.
Stay away from that velocity vicinity and reassure yourself you can make the gun function and shoot decently at a much lower speed first. Walk before you try to run. Try some extruded powders as well.