Shoulder set back 308

[EagerNoSkill]

Neck turn noted :-; going slow with that

Will measure all first then decide

Primer pocket too late .... New tools had to be used blooded :shakeshout:

[20series]

You shouldn't need to neck turn!!

The chamber should be a standard SAAMI spec otherwise it doesnt fall within the F-TR rules!! which is the intent with your rifle when you get it isn't it??

[spud]

valid point made alan

[ovenpaa]

That is not why you might neck turn in F/TR or even other disciplines.

There are slight differences in neck thickness from case to case, manufacturing tolerances and even the machine they come off will have an impact on this, it may be a few tenths of a thou but there will be a difference from case to case, this in turn will make a slight difference to neck tension which will impact verticals so you neck turn the absolute minimum to uniform the necks of the cases. This is usually a few tenths.

[EagerNoSkill]

Chamber is standard SAAMI

Primary reason to to get uniform neck thickness that helps lead to uniform neck tension on bullets

Buying lapua is intended to reduce the scope of neck wall variations but some variations may exist

Hence the check

[EagerNoSkill]

Oops just saw overpaa's answer

Better than mine sign92

[alexham]

To fl resize a case what is the goal 0.0010 inches from SAMMI spec

If you screw down the F/L resizing die until it bottoms out on the case holder it will get you very close to the SAAMI specification, but why do you want to do that? SAAMI specification rounds are meant to chamber in a smallest chamber, without causing excessive headspace in the largest. On first firing the case is fire-formed to the dimensions of your rifle's chamber and the best accuracy is achieved by only neck sizing. You can achieve that with a F/L die if you screw it down until it bottom out on the case holder and then turn it back half turn. Load a few rounds and check that the bolt closes easily, before proceeding to load a large batch.

Alex

[Christel]

Alex, welcome to the forum

[alexham]

Alex, welcome to the forum

Thank you Christel.

Alex

[EagerNoSkill]

Hi Alex

Primary reason was that I had a variety of good (well goodish) brass that had NOT been shot in my gun but in various NRA club guns over the last few months.
I cant get myself to throw away good brass and for my training at 300 to 600 yards - well preped brass would suffice initially.

To accurately neck trim the brass (varied cases RWS and HPS brass in different guns)
the optimal process is:
1. FL resizing,
2. trim to uniform OL and
3. then neck trim to uniform neck case wall thickness.

Once this is done and the brass is fired in the chamber of my gun it should only require neck sizing (this I plan) with some shoulder press back after several loads