Hi, I'm building a 6X47 Lapua. I'm using Pacific. Neck of .272. Using Berger 105gr. match hybrid # 24433. with a dumy load Oal at 2.800 I have only 1/8 neck holding the bullet I would like 1/4 2.800 is Bergers sugested OAL.. I asked Pacific for .030 freebore maybe even zero freebore. They say .090 is best. Throat angle 1-30. Neck with bullet is .269. Am I overly concerned?