I've loaded 56.5 gr of RL17 for and accurate round but haven't chrono'd . what load got you to 3550?
It's raining to beat 60 out there right now Uncle Joe, I'll run out to the shop and grab my load afterwhile and get you the powder charge, I do remember conversing with another 'Fire member who PM'd me that he had done the same thing with his 270 and the 110 gr TTSX.
Uncle Joe, I worked up this load in my rifle in 2011 before any load data was available, 60.5 grs RL-17 sent the 110 gr TTSX to 3552 fps in my rifle, W-W brass, fed 215 primers and a COL of 3.250"
Accuracy was .660" for three at 100.