I run 7 twist for both in my 6X47Lapua 40 degree. I swear the 7 twist is better for 103-105!
That is what Tubb keeps telling everyone. If an 8 twist shot better he would be shooting it.
But no mention of what bullets he prefers in 7’s. I’m guessing he ignores the Berger 105’s in favor of his ‘branded’ 115’s. Can you add anything to affirm that perhaps?
7’s fine for the longer, heavier projectiles and is known to work well also with 105’s... while recognizing that pushing them too fast may lead to instability is my understanding.