Subsonic .308 load

[Faedy]

Im wanting to experiment with some subsonic .308 loads.
I have some of the new Hornady 190gn "Sub-X" proj and some ADI Trailboss powder or some AP70n.
Has anyone got some starting loads?
Edit - some online research indicates 12gn is the magic number, so I will load a few up to try and report back.

[JimTom]

Mate I don’t have a specific load for Trail Boss however on the ADI load data website in the FAQ section there are instructions on how to obtain your starting load with Trail Boss.
I’d be very interested to see how you go mate.

http://www.adi-powders.com.au/faq/

[Faedy]

Mate I don’t have a specific load for Trail Boss however on the ADI load data website in the FAQ section there are instructions on how to obtain your starting load with Trail Boss.
I’d be very interested to see how you go mate.

http://www.adi-powders.com.au/faq/

https://www.ammoland.com/2017/03/subson ... z6ZoNcN3gi

I looked at the above link,and will give his load a run.
Ive used the winchester subsonic loads with lots of success, so if I can replicate them, I will be happy

[bigpete]

Mine was 9.3gn under a 170gn sierra fnsp

[RUGGA]

I settled on 9.8gn of TB with 200gn projectiles.

Also cracked open some winchester factory subsonic 168gn, they had 10gn of trail boss in em.

[Faedy]

Rugga and Bigpete
Did either of you chrony them loads to see what velocity was being obtained, or did you have hotter loads that actually cracked the sound barrier?

[Cooper]

I did buy a box of the 190gr Hornady Sub-x to try in my 308. But haven’t got around to it. I do have a magneto speed so can check the velocity of loads. My 308 has a 26 inch barrel.

I use a bit of Trailboss mainly in the 204 Ruger and 303. Will be interested to see how you go.

[bigpete]

Rugga and Bigpete
Did either of you chrony them loads to see what velocity was being obtained, or did you have hotter loads that actually cracked the sound barrier?

Mine went 1070 out of a 20" barrel

[RUGGA]

Rugga and Bigpete
Did either of you chrony them loads to see what velocity was being obtained, or did you have hotter loads that actually cracked the sound barrier?

The 9.8gn of TB with 200gn projie was1020fps. 20inch barrel.

10gn cracked sound barrier for me on hot days.

[TimTimney]

Mate I don’t have a specific load for Trail Boss however on the ADI load data website in the FAQ section there are instructions on how to obtain your starting load with Trail Boss.
I’d be very interested to see how you go mate.

http://www.adi-powders.com.au/faq/

https://www.ammoland.com/2017/03/subson ... z6ZoNcN3gi

I looked at the above link,and will give his load a run.
Ive used the winchester subsonic loads with lots of success, so if I can replicate them, I will be happy

Having a lot of trouble getting into this site

[Oldbloke]

Both links work k for me ok.

What you guys using them for?

[Faedy]

^^^ cheers for chrony speeds.
I have a property I shoot on that has some weekend accom right next door - subs in the .308 do not upset the city folk having a farm stay...

[Oldbloke]

^^^ cheers for chrony speeds.
I have a property I shoot on that has some weekend accom right next door - subs in the .308 do not upset the city folk having a farm stay...

Though something like that

How effective are they?

[Faedy]

Like hitting something with a 20l drum at up to 80m.
Still knocks them flat