Greetings, I am in the process of building a 300H&H and would love a little input from you men in the know. This is my first long range build and it is a budget build but luckily I have good friends who are also gunplumbers and are helping. I have secured a very good condition P14 action and I am thinking of putting a 1:10 twist barrel on it to stabilise the 180gr bullets of my choice - probably Sierra Game King at this stage (open to suggestions) although the 175gr SMK is also catching my eye as is the 185gr Berger. I want to hunt out to 400m but also be able to put those closer shots home without too much meat damage if body shots are needed. Is this the right twist? Is the 200gr bullets better? All advise so far says go for the 180gr bullets? I am new at this so any suggestions will add to my knowledge base.