As owner and Chief of Ballistics for Ohio Ammo the making of super accurate ammo has been a love/hate affair since 1968. 3 things go into accurate shooting. I will mention 2 and dwell on the other.

1. You. You must be capable of shooting accurately. Most all can get by but few take the time to be great. You will need to learn to dope the wind, estimate the range,KNOW your weapon inside and out and learn to controll your breathing, and (now don't faint) learn to pull the trigger BETWEEN heart beats, last 1 for bench shooting.

2. Your gun. learn to properly break in a new gun (Shilen and Harts web sight have excellent instructions) free float that barrel on rifles,(Brownell's has inexpensive tools to make this job easy) protect the muzzle crown ( even a little ding can ruin accuracy) and have a competent gun smith set your trigger pull to 1 to 2 pounds of pull and on varmit rifles install a 2 oz trigger/

3. Ammo (my passion) this is how bench rest shooters military marksmanship teams, Camp Perry Shooters and others do it. Try this and be amazed:

1 Brass:

a) start w/ once fired brass (because it has been worked and it fits your chamber better) and full length resize them

b) tumble clean and inspect ( reject cases w/ defects...plink w/ these) make sure to get tumble media out of flash hole

c) trim to lenghth

d) lightly chamfer inside and outside of case mouth

e) ream flash hole to .082 inches

f) ream primer pocket to uniform depth (RCBS makes an excellent primer pocket unifie) 3 different sizes...lg rifle...lg pistol...sm rifle/pistol

g) chamfer inside of and outside of flash hole ( this is critical for unform ignition) again RCBS makes an excellent tool for this

h) turn neck ID and OD concentric with each other (Sinclair Int. makes the best tool for this)

i)  weigh each case and only use cases that weigh exactly the same,

 not even = or - .01 grains is good enough

j) weigh the primers ( again no varience)

k)seat primer by hand (Again try the Sinclair tool) learning to FEEL the primer bottom out

l) weigh powder (no varience)

m) weigh the bullet(you guessed it...no varience)

n)seat bullet w/ inline or arbor press (again Sinclair)

o) now every round is exactly the same and it is consistancy that makes for accurate ammo

p) protect the bullet tips

q) neck size only from now on untill cases need trimmed then full length resize once and go back to neck sizing

Sounds like a lot of work doesnt it but you only have to do it once and I think you will be amazed. Do this and you will cut group size in 1/2 and maybe win a few bet at the range...bench rest shooters now have to put 5 shots into less than a .010 total spred to even be competitive.

I hope this helps , just remember the key is consistancy.

Good Luck And Good Shooting from Doc and your friends at Ohio Ammo