223 Rem. Ammo

xjon · Nov 14, 2017

longbowhunter2 said:
Morning Fellas, so instead of jumping in and buying any old stuff. I have been doing research on what grain bullets would be be best for my equipment. looking at twist rate vs bullet gr.
here is an article I found on the 5.56 (223) vs barrel length and twist. so I am digging in the science of accurate target practice. I have 2 semi autos with twist rates of 1-9 & 1-10 based on those twist rates recommended bullet grains is 55-75 gr & 55-62.
interesting to understand that for heavier bullets the higher twist rate is required.

if that is the correct lingo to state. o yes these are short barrels (the author states in his article)
http://www.gunsandammo.com/ammo/pair-barrel-twist-rates-ammo/

So I have a 1:7 twist 18" and it can shoot 55gr factory fmj, 77gr norma match factory, 40gr reload (lead free boat tail) 1-1.5" groups. However 62gr CBC Magtech fmj's will shoot 3-4" group. Go figure.

Unfortunately for reloading, you have to try out different weights, style, etc. to see what your rifle can shoot best. Eventually you drive yourself crazy...

longbowhunter2 · Nov 14, 2017

"quote Unfortunately for reloading, you have to try out different weights, style, etc. to see what your rifle can shoot best. Eventually you drive yourself crazy...unquote "

seriously I can see why... at least finally I am studying the science of it..
learning the different types and geometry of the bullets..
I know I am scratching the surface.. I am going to save for that quality rifle.
but I only really doing it for fun & improving my shooting skills.

longbowhunter2 · Nov 14, 2017

an other good article good reading
why we need a fast twist rate
https://ronspomeroutdoors.com/blog/choose-right-rifling-twist/

longbowhunter2 · Nov 14, 2017

xjon said:
View attachment 33642
Barnes ive used. Blackhills im trying out.
As always buys a few boxes and test which one your rifle likes. As long as it groups, ill use it. Whether 1" or 5". Depending on grouping size determines target range.

Sent from my iPhone using Tapatalk

so far your recommendation is the best option..

Search

223 Rem. Ammo

xjon

Active Member

longbowhunter2

Well-Known Member

longbowhunter2

Well-Known Member

longbowhunter2

Well-Known Member