I have used LLA with 10% mineral spirits to 2300 FPS on Lyman 311-291 GC boolits with only minimal leading. I put three light coats, allowing each to dry before the next coat applied. I have used Recluse formula 45/45/10 extensively in the 30-30 in full power loads with RCBS 30-180FN GC bullets as well as 311-041 Lymans. The advice to lightly lube sometimes seen when discussing these lubes for handgun lubes does not cut the mustard when using these liquid lube for loads over ~1500 fps. You need a coat that you can see.
But one of the best uses is on commercial cast bullets, they are often so hard that they lead at comparatively low velocities. The hard lubes applied don't work well. But a light coat of LLA or 45/45/10 can eliminate leading problems.