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Better than Z Cars?

Excuse my ignorance, but what does the annealing process do? Looking at your pile of cases, the open ends look very much like my Prvi .303 rounds new out of the box, ie shiny brass up to the shoulder and then a silvery colour like yours.
Thanks. New to this so keen to learn smile2

Dombo63 wrote:Excuse my ignorance, but what does the annealing process do? Looking at your pile of cases, the open ends look very much like my Prvi .303 rounds new out of the box, ie shiny brass up to the shoulder and then a silvery colour like yours.
Thanks. New to this so keen to learn smile2

Hope this explains

http://www.youtube.com/watch?v=yec8Yy3fEdg

spud wrote:also you should measure to the ogive for a propper comparison

What makes you think I didn't ?

But I only used a mitutoyo dial vernier, not the good tesatest kit down the workshop.

Essexboy

John25 wrote:You obviously were't bored enough otherwise you would have measured the variations in both the length and +- in weight as well.

Promise us that the next time you get bored you will be bored properly.

If you shoot lapua bullet heads, you get bored very quickly weighing them.

Essexboy

There are many variables on a bullet that will contribute to verticals. Weigh sorting is a start however a very close second is a comparison of bearing surface lengths and equally as importantly the position of the bearing surface relative to the base of the bullet. The biggest issue when measuring to this level is repeatability as anything other than a delicate and consistent touch will give variances of several tenths of a thou. These can be dialled out with some imagination and thought with the design of the process however I do wonder at what stage you should throw your arms up in the air and shout 'ARGGHHHHHHH!!!!'

Have fun.

Thats one neat bit of kit look good tongueout