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I had the opportunity to put Hornady 55gr SP 223 REM Training through a chronograph today thanks to Spudattack.
http://i56.photobucket.com/albums/g1...ps507386d8.jpg
These are the results
3178
3120
3114
3124
3119
3128
3144
3174
3175
3184
3181
3171
Average 3151.
This is the last three rounds tested grouped at 100m
http://i56.photobucket.com/albums/g1...psfb45a357.jpg
ps: i had already posted this but it seems to have disappeared so sorry if this is a double up.
What barrel length?
Sorry.
Shot through a ruger American all weather ss with 22" barrel 1:8 twist
Sent from my workbench
reasonably big ES, doesn’t affect accuracy tho.......
ES?Quote:
Originally Posted by greghud
Sent from my workbench
extreme spread, the fastest and slowest chronographed speeds.
it can indicate variances in powder charge or other inconstancies in the loaded rounds.
often accurate ammo has a small ES.
greg
i thought it may have been something like that.
Slowest (3114) is 70fps slower than the fastest (3184) so the difference is 70fps which is 2.2% less. 3114 is 1.2% less than the average 3151, as a percentage how does that fit with acceptable tolerances? Keeping in mind the slowest is 37fps slower than the average and we are talking about a 3,151fps average.
That training brass is good stuff. Use it to reload now but out of the box it's pretty good bang for buck. Haven't tried the steel "Match" stuff but know they were selling it on NZAR15.
@logesearle
Sent from my workbench
gee I hope at that price that's for 50rds if not you KIWIS pay a shitload for ammoQuote:
Originally Posted by smidey
this is a good es shot out of my 260R with 130g VLD BURGERS but they shot shit so I went with a different loadQuote:
Originally Posted by smidey
Attachment 40133
Thanks @smidey .
I have a 1:12 twist 22" barrel, would they slightly faster with a slower twist?
I don't know, i guess slightly faster but that is just that, a guessQuote:
Originally Posted by logesearle
ok there is ES loads out there . . but is accuracy good enough for what you want to achieve.
Yup a low ES doesn't always mean accurate. A bad ES of say 100 fps can still shoot very tight groups up to 200-300.
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new/more .223 ammo on its way
