Anyone loading 222 with Speer 70gr semi Spitzer ?

[Huntchic]

I’ve loaded thousands of Speer 70 gr semi spritzers in 223/5.56 with TAC and X-Terminator powders. I’ve seen references in a number of places of folks using that 70gr bullet in 222. However I can’t find any kind of load data or where anyone gave reference to powders or loads.
I’m going to give them a try in 222 but not sure if I should use TAC or X-Terminator. TAC is slower burn n what I use in heavier 5.56 loads where X-Term I use for lighter 5.56 and all my 222 loads.
Anyone have any idea of which powder or a low end load to start at with this 70 gr in a 222 ?

 

[rcook10]

They are pretty slow out of my 223's as the bearing surface is painfully long. Poor bc but stabilizes in a 9 twist.

 

[fshaw]

I have an old Speer manual that may have load data for older type powders. PM me if you want me to dig it out.

 

[TaperPin]

Wow - I can’t ever remember even hearing of a 222 with a fast enough twist for anything over 55 to 60 gr. That’s cool.

 

[Huntchic]

Well the length of that bullet seems to allow it to stabilize in some rifles.

 

[FLS]

I’ve got an old Savage 112J in 222. Beautiful rifle BTW. All the Triple Deuces I’ve ever seen have 1-12” or 1-14” barrels. I don’t think that will stabilze that 70 grain bullet. My 20 year old Speer manual only goes to 55 grain bullets.
My Sierra data goes up to a 63 grain bullet.
Western Powders data only goes up to 55 grains.

 

[Huntchic]

I have looked back through manuals to as far back as the 1970’s era. Nothing found either. Guess I’ll just have to try a few.

 

[49ereric]

Speer #9