In search of .308 Winchester subsonic loads for cast and jacketed bullets, that work.

[koger]

Could you all give me a starting point for subsonic .308 Win. rounds, jacketed and cast, all replies appreciated. I am helping a friend and I have no experience in subs for this caliber.

[243winxb]

Google - hodgdon subsonic load data

[Gamsek]

https://uploads.tapatalk-cdn.com/20220501/fff3dcacb4d68e0aedd9f077beca71bb.jpg
https://uploads.tapatalk-cdn.com/20220501/f3a04c38365e9693f1f1bf2970583f36.jpg

[243winxb]

Note the PSI of Trail Boss on Hodgdon data. 30,000 PSI :shock:

[koger]

Thanks a bunch.

[Mk42gunner]

Try this:

https://castboolits.gunloads.com/showthread.php?13425-Cast-Bullet-Loads-for-Military-Rifles-Article

[jaysouth]

What is the purpose of this subsonic load you are seeking? Do you want 600 fps or 1100fps? Deadly varmits or beer cans?

[charlie b]

http://www.gmdr.com/lever/lowveldata.htm

I use the .30-30 data for my .308. Comes out really close and accuracy between the different loads and powder is also about the same (or maybe a little better in the bolt .308).

[1006]

Some more Hodgdon data found on their reloading data web site:
299720

299721

[quilbilly]

It has depended on the barrel for me. One of my 308's doesn't like subsonic at all while another rifle (a 16-1/4" barrel carbine) loves the big boolits at sub-sonic. Both have the same twist, but different makes and barrel lengths. You just have to experiment.

[GoodAlloy]

Reddot & 200 grs boolit
Will get you there in bolt action no problems with good accuracy
Another option would be trailboss

[popper]

cast and jacketed bullets --- somebody else already asked why so my remark is that is dangerous for jacketed as you might get one stuck.

[Rich/WIS]

For sub sonic I use 5 grs of Bullseye with cast bullets, either 120 gr or 173 gr, in 30/40 and 30/06. The 120 gr loads have basically no recoil and low report and are accurate to 50 yards, also cheaper on alloy.