They don't even list the 50gr TSX anymore in 22-250 or anything? They list a 45gr TSX FB and a 53gr TSX FB.. They list TAC,IMR4895,Varget,AA2520,IMR4320,RL-15 for both bullet weights.
And thats all they list for the 454 Casull AA No.7- 19.6-21.8gr's
I have the book if you need any other info PM or call me.
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