I am shooting 280AI 143 HH RL-23 60.0gr Fed210 primer Peterson brass 3.362 for 3130fps .
killed 3 mule deer 2 blacktail 1 elk.
My gun is pre 64 -Bartlien barrel 26" 1:9 twist It seems to likes this load.
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Sorry to hear about your problems. I have Peterson cases in 25.06 and 280 and 280AI and 7MM rem and I have had no trouble with any of them.
I hope you find what you need.
280AI have great success with 143HH bullets . 59.2gr RL23 petersen brass 215 fed primer 26" 1:9 twist 3260fps no pressure signs.
2 mule deer 1 blacktail 1elk 2021 all dropped on the spot.
hello i'm dennis . I have been following your posts and LSherm for a long time . I shoot a 280AI 1:9 26" Bartlein I have powder imr-&h4831 RL 19&23. I am shooting 150 accu lr and 145 ttsx
I'd like to use 143HH .
Have you loaded and shot this one.
thank you for any help