tight neck 6.5x47?

[Sisu]

I'm starting to break in a new 6.5x47 and noticed that the bullets wouldn't slide easily back into the fired cases.,This is from factory loaded 123gr and 139gr lapua ammo.) I've read in Glen Zediker's book that this means I have thick neck walls and this can spike pressures. The 123gr lapua ammo shot fine. The 139gr factory ammo produced bad ejector swipes on the brass.

I also have some new brass that I'm pretty happy with. Out of 30 random pieces they all measured between .0121-.0129. So I was thinking of skipping the neck turning all together, and just pulling out the bad pieces. My question is this....Between the pressure signs on factory loaded brass, and the bullet drop test, do you guys think that I need to neck turn?

Spec's
neck o.d. with loaded 139/140gr bullet = .290
neck o.d. after 1st shot = .292
reamer I believe was .293 neck
neck wall thickness = .0121-.0129

 

[ThunderDownUnder]

Hmmm, the loaded neck OD is fine and the case wall thickness is within spec! Max allowable case neck wall thickness according to Lapua is around 0.0135',0.345mm).

A no neck turn reamer is 0.294 - 0.295' which allows 4-5 thou over a loaded case. Maybe your reamer at 0.293' requires neck turning as all other dimensions you give are the same as I use except my reamer is 0.294'. Check your reamer as it looks like it may be a tight fit.

Have you deburred,chamfered) the cases inside and out? Info on reamers here: http://www.6mmhot.com/6.html