My understanding is that 2.800 is max overall length.
I seated my 150 gr to 2.770-2.775 which just puts the case mouth in the bottom 1/3 of the groove. It matches exactly with the remington 150 gr sp factory rounds my gun loves. I am in no way giving you advice. I am very very very new to this. I am only offering what I did as food for thought, and to make sure I am not screwing up. My cases were trimmed to 2.008 which was where my case trimmer stopped.
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