Great of your daughter for thinking of others and putting it into action. Wish there were more like her. Live in the wrong part of the country to vote for her but hope she runs. Will Rogers is credited with saying" In every election we always hope the best man wins. Trouble is he never runs."...
Not the TTSX but did work up a load using Tac and Nosler 125AB. Temp was about 75 and used it about three weeks ago at 40-45 degrees. Was in an area that a 300 yd shot was possible but the test material showed up at approximately 90 yds so it wasn't much of a test for accuracy, distance related...
Nice shooting. My past experience with the 6BR was that it is an accurate caliber for sure. Case life is quite good and believe barrel life to be also.
It's possible your rifle just doesn't like that bullet or maybe keep trying to find the right combination. If the 160gr doesn't work, try something that isn't an AB. You'll find something that clicks.
I worked with two guys that were dedicated bow tie and blue oval owners. Each thought that the brand they liked was the best and everyone should buy what they liked, and we pay for it. If one of these gents would have offered to buy me their brand of choice I would have gladly driven it, but...
There can be a bad lot in any brass but most of the FC brand brass that I have used last couple of years had loose primer pockets show up after 3 maybe 4 loadings. No split necks. Might try a different brand and anneal. Hopefully you won't have any more problems.
Yesterday during our youth/senior citizen antlerless season which spikes under 3 inches are legal, I got this one using my Sako Forester 308 Winchester. The load is;
Nosler 125grAB
Win Case
CCI 200 Primer
47.5grs Tac Powder
MV= 3074.2 fps
Deer was facing to the right slightly quarting to me...