expander mandrel

[eric n]

[kcstott]

It's a cool as you want it to be man.

[LynnJr]

Inherent accuracy is usually applied to chamberings like the 6BR and 6 PPC.
They get that label moniker because nobody sells cheap garbage components for them and getting a rifle with a good barrel to shoot groups as large as 1 inch at 100 yards is all but impossible to do.
If you have a brand new rifle in one of those chamberings and it's shooting more than a inch at 100 yards something is usually broken or loose on the gun.
If your a brand new reloader you look like a genius loading for those two cartridges.

I did a ladder test on a 6BR heavygun at 100 yards with 7 different powder charges and the vertical was less than 3/8 inch.

[kriller134]

This makes sense to me. During my initial development, I found that my numbers were really close to each other at the max load weight.

[longrange1]

everything ive shot for several years is over book max.


i got cut short here so i will add that i also think you need to up your charges...41.5g of H4350 is kinda the standard in the 6.5CM with a 140g bullet....id suggest you run a new load development starting at 41g and run up to 42g in .2 or .3g increments and run your LD like this

load 6 rounds each at 41g-41.3g-41.6g-41.9g...personally id skip the 41g and add 42.2g but its your gun so...
set up your target on a tall piece of paper with(2 dots or what ever you use)for each charge weight 4 on the right side 4 on the left
shoot the lowest to highest on the right 3 rounds at each target...so 12 rounds total...let the barrel cool...then shoot the highest to lowest on the left side 3 rounds each at each target.

i can pretty much guarantee there will be a load in there and i bet that all of these will group well as long as you are capable...now bullets...if you shooting VLDs seat them touching or .002 in the lands if not VLDs then seat them .020 off the lands...if you get that RPR(if i remember correctly)to shoot a 1/2" or less id call it done and start getting trigger time.

this is not my load development but i have been using it for quite awhile and it works...ive found loads in 36 or less rounds in the last 8 barrels...here is the load development its a good read and it will work with and caliber just adjust the charge weights..

http://www.texasprc.club/preidloaddev