Neck Turning

Great article here from 6mm-BR on neck turning:

http://www.accurateshooter.com/technical-articles/neck-turning-basics/

Almost a step by step guide on how to do it.

Powder Storage

Here is SAAMI's guidelines on how best to store your powder. Well worth a read for anyone who reloads.

http://blog.westernpowders.com/wp-content/uploads/2014/12/SAAMI-storageguidelines.pdf

Primer Consistency

Large Rifle Primer Performance

Written by LAURIE HOLLAND

This thorough test assesses the consistency of several commonly used Large Rifle Primers and has some results you may not expect. Very well written and very useful.

I also found a couple of other articles on this subject. Whilst not nearly as well carried out of written, still useful information to add to the discussion.

Primer Flash Test Pictures

Brisance Primer Testing

Transonic Bullet Stability

Great article in 6mm-BR about Transonic Bullet Flight. Well worth a read.

UPDATE:

There is a discussion on Varminting UK about which bullet/rifle combo's have been proven to remain stable through the transonic and into the subsonic stage. Read more here:

http://varmintinguk.freeforums.net/thread/393/bullets-remain-stable-transonic-stage