Powder for subsonic 223/5.56
- Thread starter TomD
- Start date
I recently read that there is/was a manufacturing problem with Trail Boss and that it probably won't be available anytime this year. I think it is manufactured in Australia. I recently came across this Hodgdon Subsonic Rifle Load Data pdf and the only other powder listed for subsonic 223 Remington is Clays. Not sure if it's available. Hope this helps.
https://hodgdon.com/wp-content/uploads/2020/07/subsonic-data-final.pdf
https://hodgdon.com/wp-content/uploads/2020/07/subsonic-data-final.pdf
TomD
e publius unum
One youtube video tested Clays, Trail Boss and TightGroup, all Hoghdon pistol powders as canidates. I like the Trail Boss because it is sold in 9 oz containers because that is all they can get in a traditional 1 pound container. I'm nervous about 3-4 grain charges in a 223/5.56 size case and would like to get something to sorta fill the case.
antelopedundee
internet bum
Stuff it full of kapok.
Or another lightweight filler to hold the powder at the bottom of the case.
This is usually needed for consistent ignition.
OliveOil
Active member
What you wanna do with a subso 223 ? hunt mosquitoes ?
I remember of the Russian and their 80 grains oversized 5.45 bullet. They quickly switched to 9x39, for terminal energy and momentum. Meanwhile, most everybody do it with MP5 9x19. A 300BO upper might be an option for U.
As far as "start low and go up", always ear the opposite for subso, start high and go low. A storry about jacketed bullets stucked in brl.
I remember of the Russian and their 80 grains oversized 5.45 bullet. They quickly switched to 9x39, for terminal energy and momentum. Meanwhile, most everybody do it with MP5 9x19. A 300BO upper might be an option for U.
As far as "start low and go up", always ear the opposite for subso, start high and go low. A storry about jacketed bullets stucked in brl.