They work fantastic in my Marlin 336. Never had much luck with factory 150's, my gun always liked 170's, so I was concerned with the 160 FTXs. Man, was I happy I tried them. They are very accurate for me, both Factory and reloads using the LeveRevolution powder.
Out of my 20" 336, factory loads hum along at 2346-2392 fps.
I've work up loads using the published data in Hornady #8 manual. Worked up from 33-36.0gr in .5gr increments and settled on 36.0gr LeveRevolution for 2319 fps (5 shot avg). This load was one jagged hole at 60 yards (most shots are less than 75 yards in the GA woods).
NOTES: Work up any load carefully in your own rifle, what is safe in mine, may not be safe in yours. 36.0gr is 0.5 gr over Hodgdon's data, but 1.0gr less than Hornady's published max. USE WITH CAUTION. I did note from 34.5gr's and up, primers were backing out slightly (about .005 - .008"), but extraction was smooth, and other than primers backing out slightly, they weren't flattened. Others have noted the same.