Send a sample of the sabot you like best along with a mold order, and let me make a smooth sided LFN with small bevel base which will have a bearing length that just fills your sabot. It will drive tacks if anything will.
About any ol bullet can be loaded into sabots, but we are dealing with a layer of plastic for bearing between bullet and barrel. Best guidence will be obtained if the bullet is smooth and has enough bevel on the base to fit whatever radius your preferred sabots have at the bottom of the bullet pocket. The reason for filling the sabot fins with bullet bearing is to obtain maximum bearing surface wiith minimum weight overhanging the fins, which can cause, or allow the bullet to lean off center with the bore a little, and spread them out at the target.
Al Marion of Boise Idaho did a very extensive artical about sabots a few years ago, when the concept was first born. We did a lot of development work to learn what it takes to get results. The above delivers accuracy and maximum punch. Al sent samples to quite a few people he knew who hunted a lot, for the purpose of getting kill reports. There were a lot of them, all in one season, on animals to moose, big bears and bison. Almost all the animals dropped in their tracks or at most walked only a few steps after the hit. -- Lewis and Clark would have fared better with this type load than their roundballs!