How would you rank the inputs of reloading on accuracy?

HockeyDad

Well-Known Member
Joined
Dec 4, 2007
Messages
62
Location
Tempe, AZ
From most effect on accuracy to least?
For example (totally random):

1. projectile quality
2. turning the necks
3 cleaning the primer pocket
4. establishing the optimum jump to the leads
.
.
.
etc.


Thanks.
 

P7M13

Well-Known Member
LRH Team Member
Joined
Jan 5, 2016
Messages
730
Location
Orygun
Shooter <<---- #1 far and away
Equipment condition
Load tuned to barrel harmonics
Projectile

Watched my daughter's BF shoot PPU Factory ammo through her Marlin XL-7 in 7mm-08. Five shots, he *might* have been 2 MOA. As he got up from the table, he muttered, "cheap gun." Sure was a cheap gun. I think I bought it for $249 from CDNN. Had a Japanese made 4X Simmons for a scope that I bought used for $35.
She sat down, put the next five from the same box in the X, all inside a nickel. I've seen her shoot that well many times, it wasn't luck.
 

LoneTraveler

Well-Known Member
Joined
Feb 7, 2014
Messages
757
If accuracy was not built into the action, barrel, trigger and stock when made, With a good scope properly mounted. All the other variables will not make it shoot good.
 

Lefty7mmstw

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Joined
May 13, 2012
Messages
4,879
Location
Dakota del norte
assuming a decent shooter and a halfway quality rifle with everything tight and in it's place...
1. bullet- bore compatibility- if your pipe doesn't like the pill in the first powder or two tried then switch
2. powder- decent burn rate for the application
3. case- uniform weight and decent condition
4. neck uniformity- keep the length similar- you can actually see it on a strain gauge when you have short and long cases in the mix together
5. primer- enough to do the job- I'd rather over-ignite a bit as things get going slower in cold weather
6. jump- jump is bad in short range match situations but many bullets hunters toss at game actually like a good bit of it
 

GrayCreed

Well-Known Member
Joined
Jun 17, 2020
Messages
179
Location
Colorado
1. Custom seating depth
2. Quality brass
3. Consistent charges of temp stable stick powder.


Things that don't matter to me (starting at least most important)

1. Indexing rounds
2. Unnecessary brass prep done on ****** brass
3. Any projectiles over ¢36 each (except for copper solids)
 

65WSM

Well-Known Member
Joined
Nov 24, 2007
Messages
482
Location
Near Mt Rainier
Most of my attention these days is toward consistent neck tension at low as I can get away with.

My operating theory of reloading is that, if I find a temperature stable powder that fills the case without compression, burns completely in the length of the barrel, I will get SDs in single digits with consistent neck tension. Then I can test seating depths with my chosen projectile which nearly always is within a gnats eyelash of the lands. Many bullets will be constrained by magazine length or are "varmint" bullets that will never reach the lands.

Quickload helps select powders from Hodgdon extreme, Vhita Vuori and a few of the newer Bufors from Alliant. Alliant Swiss Nitrocheme are also excellent. I have had success with Precision (SO-62).

Adam MacDonald's kernel counter is key to getting charge consistency. If you don't think this matters, this is the easiest variable to test.

Walt Berger suggests testing at 300 yards. I test at 300 and 600 (target cameras).

Just like Secant ogive bullets are less sensitive to seating depth than Tangent ogive bullets. A recent corollary to my reloading theory is that HBN coated bullets are less sensitive to seating depth choice than naked bullets..

When do I choose to call a load settled? I define accuracy as 3 inch groups at 600 yards. I have a few rifles that will shoot 2 inch groups there. My AR-15 .224 Valkyrie (factory CMMG Endeavor barrel) managed 0.442 at 300 yards (six round group) but I am still struggling with both it and a .223 Wylde upper at 600 yards ( 6 inch is typical). That is a challenge I enjoy.
 

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