7mm TCU subsonic?

[seez52]

Anybody ever try and run 7mm subsonic? Was thinking about a 300 Blackout but I'm not stocked on any ammo or components and after seeing 20 rnds for $30 at the LGS I think that boat has sailed for now.

I've got an old Contender in 7mm TCU that I haven't shot in eons. Wondered if anyone had tried running something like that suppressed? I do have some makins' to get that going.

 

[TomInMN]

Haven't, but found this:

http://forum.accurateshooter.com/threads/7mm-tcu-load-data.3941521/

Also, looks like a 9" twist would be preferable for the heavier bullets. You likely know that already, but thought I'd add it just in case.

[seez52]

Thanks, I used to shoot 120gr and 145gr. I'll see if I can look up the twist and how heavy 7mm bullets come these days. 

[nightrunner]

I found that Sierra makes a 197 gr bullet.

I can’t imagine that would be too far off from the 300 BLK subsonic load with a 208 AMAX. Bet it performs much the same.

Ill admit I’d never heard of the TCU family of cartridges, I find them interesting...

[seez52]

In standard loadings it's really a great cartridge. Accurate, flat shooting and packs a good punch. I use reformed 223 brass so it's about as cheap to load as anything.