.243 sub sonic

[aquarius11]

Just asking, are they comercialy available, has anybody worked out a self load?
TIA

 

[Bigboab29]

8 grain of trailboss gives you just over 1000fps with 100gr lapua soft points, accuracy isn’t fantastic right enough

 

[kenbro]

Hodgdons list the above load on their load data site.
I tried it.....they go like mortars to 100 yds and I was able to pick them from the backstop surface with just rifling marks and very slight damage to the tips.
Ken.

 

[User00040]

Not sure why you would bother...

Subsonic rounds tend to do better in 'under-bore' (I know this is not a proper term) cartridges, like the classic .22LR or to a lesser extent the .308. (.300 BLK if you are cool).

The .243 is an 'over-bore' cartridge, so unless you have a custom bullet which is exceptionally massive, and an exceptionally fast twist (not a regular 1:10) you will probably get bullets that are not quite subsonic, or ones that 'key-hole'. Not ideal.

Then again, I've not tried it. This guy has:

 

[dodgyrog]

8 grain of trailboss gives you just over 1000fps with 100gr lapua soft points, accuracy isn’t fantastic right enough

No longer available I believe as not REACH compliant.
I would use cast boolits for subsonic loads