RL 33 0.267 US869 0.2735 N570 0.277 RSLRT 0.285 IMR 8133 0.3 N565 0.319 ACC MagPro 0.3342 RETUMBO 0.337 RL26 0.3397 RSMag 0.345 H1000 0.366
Above I have posted popular slow burning powders on a numbers basis H1000 being the Fastest and RL 33 being the Slowest.
N568 is at 0.30 identical to 8133 in the list above. It is a blend of N565 and N570. If you PM me what the volume of you brass is in H20 weight, what bullet you are using, how long your barrel is, and where you will seat your bullet or Coal, I can model it for you to give you some starting loads. I would not recommend trying to use 8133 data just because the published burn rate is the same. But, all of this should help you figure things
I would note, that Vihtavuori does not list even N565 in their load data until at least 180 to 190 gr. bullets in 7MM Mag.
Below that its their faster N560 which is more comparable to H1000. So unless you are going to use really heavy bullets,
stuff like N570 and N568 may be too slow to get optimum accuracy, though you may get more velocity?