culling brass

G

Guest

Guest
Just got new 6.5wsm built set up for 1000yd.how far should I go on sorting brass by weight is + or - .5 gr. to much diffrence.I can see I should have started with 500rds. cause even at + or- .5 lost about half.
 

BountyHunter

Well-Known Member
Joined
Jun 13, 2007
Messages
5,343
Location
Wilmington NC
Gunner

Think it depends on what level of accuracy you are expecting?

Some 1k BR guys sort to .1, most go to .5, some do not sort at all but they are rare. I subscribe to the .5 gr school if it is all over the place. However If I have less than 1% variance except ends of extreme spreads, I throw the ends of the bell curve out and use the whole lot. Lot of discussion as to what you are weighing anyway, ie wall thickness, case head etc.

Others take weighed brass normally within 1 gr in lots of 20 then shot over chrono and mark brass by uniformity of MV as whether record or sighter round.

If for hunting gun use 1% or one grain and just shoot it.

BH
 

sniper2

Well-Known Member
Joined
Jan 10, 2003
Messages
948
Location
centre,alabama
try setting up 100 sticks of brass in tray
and dropping 60 gr. of ball powder in each
you will notice a different level in the cases. Take the brass with the most consistent levels of powder for your groups,
this method works pretty good.
 
G

Guest

Guest
thank you for the info.not shooting any maches yet but you never know.but i am looking for all i can get out of this gun.so i geuss i better start changing my old ways.spent $5000 on the gun probely shouldnt try to skimp on details now.probley will shoot brass i got culled for break in.and go get some more and start culling.Anyone got anice warm place for me to start breaking this thing in?
 

a.JR

Well-Known Member
Joined
May 28, 2003
Messages
98
Location
Townsville Australia
Gunner,The importance of qualifing your projectiles(shape) will far out way the finite matching of the brass any day ..I can find differences in the hand made L/R bench bullet that i use that will cause a variance in the vertical dispersion of the group and this will be even more so with the likes of a SMK..I have used a lot of 168 7mms for 1K ,the largest difference in weight i could find was 1 full grain and it DID NOT CHANGE THE GROUP one bit as long as the other measurements were equal ...I have shot AUS records with cases that have a 1 grain weight spread(220gns total) and i have checked primers as well but do not own a platform good enough to evaluate these...All that being said i still try to equalise all components as best as humanly possible but it's the bullets and the alignment of same that make the biggest gains for me..JR..Jeff Rogers..ps .. your right it's best to start with the largest nos of components 1st.
 

Trending threads

Recent Posts

Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1


Culture Of Excellence At Nightforce Optics
By Len Backus

A high level of quality both in production and in service. Read More


Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen


Nightforce ATACR Scope Review
By Jeff Brozovich

The new NightForce ATACR is for sure a top choice for any long range shooter. Read More


The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz


Nightforce Velocity 1000 Reticle Review
By Scott Shreve

I think Nightforce knocked it outta the park with this reticle! Read More

NightForce


Top