Phragus, it says "case length" l.8" or less, not cartridge. BIIIIG damn difference.
35 Remington case is only 1.92, so trimming 1/10 of an inch shouldn't make that much difference.
I'd get in touch with Lee and see if their Factory Crimp Die would adjust down far enough to crimp a case that short. If so, I'd get one, and then trim my cases, but load to standard length, and use the FCD to get a good crimp on the bullet.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.