Just posted the following on another thread regarding achieving single digit ES and SD. Maybe it will be of use to you. Worked for me
Equipment
Gun - T2K chambered in 6XC - Krieger 27 inch barrel 1:7.5 twist
Brass - Norma
Bullets - Lapua Scenar L 105gr and DTAC 115gr BN coated
Powder - H4350
Powder charge weight- 39.50 gr
Primers - Wolf large rifle
Chronograph - Magnetospeed V3
Brass prep for pre fired and prepped brass
1. deprime with Lee recapping die -
http://www.sinclairintl.com/reloadi...prod33745.aspx?avs|Die Style_1=Decapping Dies
2. tumble brass in stainless steel media with H2O and Lemishine in Thumler's Tumbler for 3 hrs - this does a great job on primer pockets -
http://www.sinclairintl.com/reloadi...-tumbler-stainless-steel-media-prod42994.aspx
3. separate media and brass with separator and rinse in filtered or distilled H2O -
CM-2000 Case/Media Separator: Case Preparation Equipment
4. dry in oven at 200deg. F for 2 hrs
5. anneal after EACH FIRING with Benchsource annealing machine -
New Case Neck Annealing Machine
6. spray lube cases and inside of case necks with One Shot spray lube - make sure you don't spray inside of case body - just the necks -
http://www.sinclairintl.com/reloadi...ay-case-lube-w-dyna-glide-plus-prod55252.aspx
7. measure neck thickness of each case and sort by .0005 to .001 inch groups - I use the Sinclair neck thickness gauge -
http://www.sinclairintl.com/reloadin...prod36959.aspx
8. full length size with Redding S type FL sizing die and proper size neck bushing to yield .0015 to .002 neck tension - I use a .269 bushing size. I use a RCBS single stage Rock Chucker Supreme press. Nothing fancy.
9. Expand neck using Sinclair expander -
http://www.sinclairintl.com/reloadin...prod38807.aspx - Note : if the cases are new and haven't been inside chamfered yet I do that step before I expand the necks. I also sort brass in this step. If I feel the expander inserts into the case either too easily or too hard I pull the case out of the batch.
10. trim brass to length using Sinclair/Wilson trimmer - control length to .001 inch -
http://www.sinclairintl.com/reloadin...prod39292.aspx
11. chamfer inside of neck with K & M adjustable chamfer tool - this is really important !! - keeps chamfer depth consistent -
K&M Shooting - Controlled Depth Tapered Reamer, Large 6mm - .338
12. chamfer outside of neck with standard tool -
http://www.sinclairintl.com/reloadi...y-locknload-case-prep-chamfers-prod56188.aspx
13. uniform primer pocket with K & M tool -
K&M Shooting - Large Rifle Primer Pocket Correction Tool
14. chamfer, deburr and uniform inside of flash hole with K & M tool - pretty important -
K&M Shooting - Flash Hole Uniformer, Professional - Standard 0.080
15. wash cases in warm soapy water
16. while washing brush inside of case necks with nylon brush to remove brass chips and case lube
17. while still wet, wet sand outside neck chamfer with 2000 grit sand paper. Make sure you do not thin the neck. Just smooth out any burrs on the outside chamfer
18. final H2O rinse in filtered or distilled H2O.
19. dry in oven at 200 deg. F for 2 hours
Finished brass sorting
1. weigh each case and separate into groups of .10 grain groups. Heavier cases will generally yeald faster MV while lighter cases will generally yield lower MV.
Priming
1. I use Wolf large rifle primers that are fairly hard and need to be carefully seated deep and to the same depth every time. I use the 21st Century adjustable primer seater. It's a work of art. Great piece of equipment -
S.S. Priming Tool
Charging
1. Throw charge on a Chargemaster to 1 grain under my final desired weight. I use a Chargemaster to throw not because it is great but only because I have one. Better to use a charge thrower.
2. trickle up to final weight with an Omega II trickler -
Ammo Reloading | Reloading Equipment | Omega Powder Trickler | Dandy Reloading Tools
3. I use a Sartorius Entris 64-1S analytical balance that weighs to one kernel or .001 grain easily. I switched from a Chargemaster to this scale and my SD and ES were cut in half immediately. Not cheap but worth every penny in time saving and accuracy. -
Lab analytical balance Sartorius Entris64-1S
Here is a great video or the scale and the Omega II in action -
https://www.youtube.com/watch?v=jr1Wso6P9ZI
Bullet sorting
1. With the DTAC 115 bullets I sort by bullet weight into groups to .10 grain. I use the Sartorius analytical balance for this. Very fast.
2. With the DTACs I also have to sort by bearing surface length using the Sinclair bearing surface gauge - ]http://www.sinclairintl.com/reloadin...prod38769.aspx
3. With the Lapua Scenar L 105 grain bullets the QC is so incredibly good that I do not have to sort by weight or bearing surface.
Bullet seating
1. I use a Forster competition micrometer seater and seat both the DTACS and the Scenars .040 long and then just close the bolt gently on them to seat them in the lands. This way my seating depth is always the same. For me it yields great accuracy also. -
http://www.sinclairintl.com/reloadi...idge_1=ASY_6 mm XC&avs|Manufacturer_1=FORSTER
2. I never check for bullet run out as I have checked it many times with my Hornady runnout gauge and it has never been more than .001 inch. I suppose I should probably be checking cases for neck concentricity but have not found it necessary so far. Maybe in the future.
That's about it. A lot of prep time and a lot of expensive equipment.
Note : I have recently been experimenting with a different method of sorting brass. Instead of sorting by weight I sort by MV when running over a crony. I record the MV of each test shot and then later group the cases by MV. This seems to yield better SD and ES than sorting by weight. I will also be experimenting with water weighing the cases as soon as I get the 21st Century tool -
http://www.21stcenturyshooting.com/P...cket_Plugs.php - More pain in the ass and record keeping though.
Good Luck