.300 blackout small base dies

[duman444]

After reading about RCBS small base dies for .223, checked to see if they have them in .300 blackout-no joy.

Both my brothers and my Smith 15-300 have what I consider tight chambers.

Any brass not made for .300 blackout that is not one of the domestic major manufacturers (R&P, Win, PMC, BHA, etc) were constantly hanging up in chambers. Bolt would not completely close and we broke a couple of charging handles beating them open to remove. This even happened with LC military brass.

Used Lee conversion and sizing dies. Brother bought 300 cases of Hornady .300 BO and those and the domestic made converted .223 brass is all we shoot. No issues since we switched.

Was my issue differences in brass wall thickness or are the Lee dies not as good as others in sizing? Use Lee on over 20 calibers and if its the dies fault-its the only issue I have ever had with them.

 

[Ivan the Butcher]

The Black Box die sets from RCBS are Small Base sizing and T/C (tapper Crimp) and run North of $60. I have them in 223, 300BO, 308. A friend has them in 224 Valkyrie, 6.5 Grendel, & 6.8 Rem something.

Dillon offers most of these in Carbide also but you still have to lube them!

Ivan

 

[duman444]

Thanks Ivan. Found the black box sb dies in stock on Ebay. Will order today. most other places show out of stock.

 

[mckenney99]

While I have a couple sets of Lee dies and other tools, they have a well known reputation for sizing dies making it out of QC out of spec. To their credit they usually will replace them pretty quickly when the problem arises.

 

[serger]

When I had this problem, I used .223 dillon dies to size the body
and did the neck sizing with the Lee 300BLK sizing die.