160gr Barnes TTSX in 338WM

Hi all new to this cool looking site.

I'm a long time loader and caster 50 yrs.

I'm looking for some loading info I have a Savage 116 in 338wm have owned it for 5-6 years now this gun is lights out accurate 210NP and 180gr Nosler AB do to age and ailments I just can't get as close as I use too so i'm trying to use this as a longer range deer and antelope gun 500-600 yards I took two Antelope last year with my 270 using 130gr NP 482 yds and 608 yds both Antelope died but I had to leave one over nite something I have never done before and had a sleepless night and the meat was OK at best.

So my question is anyone shooting Barnes 160gr TTSX I just got a box and there is so little loading data, this gun loves RL-19 powder which has worked great in the 210NP and the 180AB but the Barners site lists RL-15 as there main powder used for accuracy that seems a little fast heck I use RL-15 in my 260 W/Nosler 100gr BT.

Thanks for any help.