260 lapua brass runs .014-.015 neck thickness so lets say your brass is on the thick side...015...that would be .030+.264=.294 so with your .293 bushing your only going to have .001 neck tension....not enough IMHO after you factor in spring back. ive had my best results using .002 to .003 neck tension so if i was you i would order .292 .291 .290 bushings as well...or better yet just get a lee collet neck sizing die and a few extra mandrels and polish the mandrels down to the appropriate sizes. the reason i say this is because unless you ordered a tight neck chamber for your 260 a fired neck is going to be about .297 .298 so youll be sizing down any where from .005 to .008 and the bushing may cause doughnuts...it did in my nosler brass and my lapua brass...i just started using the LCD and will most likely never use my bushing dies again.
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