Doing some loading for a friend, but having a little trouble. I'm using resized .284 Win brass, trimmed as per a Lee 7.5 S case length gauge, and loaded with Hornady .308 150grn BTSP interlock bullets. The problem is, seated to the crimping grove they will not chamber. At all. To get it unstuck required quite a bit of force and one helluva surprise as the dummy round ejected backwards into my face. Ouch. Moving along, I seated the bullet to the min OAL of 2.790 and that worked much better, but the last 1/4" or so of the cycle still required a pretty good push and resulting 'click' noise. Finally, I seated one lower than recc'd overall length to 2.775 which chambers fine without resistance. Having never shot a K31 or any straight pull, I'm not sure how much resistance to expect. The other problem, since the bullets at BTs, seated to 2.790 a good chunk of the Boat Tail end of the bullet is sticking into the shoulder and case area which makes me a little nervous. I'm not a fan of seating bullets lower than recommended, and I'm also not keen on seating a bullet with part of it sticking out into the shoulder/body area of the case.
I have no problem buying different bullets but if there's another issue I'm not considering let me know.
Excuse the terrible pics, it's the best I can do.
Here's one seated to a shade under minimum spec (2.775 - min OAL with H335 load is 2.790).
And one loaded to the crimp grove, 2.910, and this was was well cam'ed over when sizing.
And one of the bullets,
I have no problem buying different bullets but if there's another issue I'm not considering let me know.
Excuse the terrible pics, it's the best I can do.
Here's one seated to a shade under minimum spec (2.775 - min OAL with H335 load is 2.790).

And one loaded to the crimp grove, 2.910, and this was was well cam'ed over when sizing.

And one of the bullets,
