Hi Kelly,
Congratulations on the new carbine!
I\’m going go try to give you the information I have. I have loaded these bullets with 2 different powders.
I mostly use H110/W296 for my carbine loads. Right now I am loading 14.9g of H110 with mixed commercial and military brass
Cci 400
1.670 coal
Velocity should be just a bit above 2000 fps although I have never ran these over a chrono.
The range of powder charges with H110 or W296 is between 14.0-15.0g. No need to try to hotrod this cartridge as it makes no sense.
Coal may need to be reduced in some carbines with this bullet to feed reliably but I do not have any issues in mine. Please reduce charge below 15.0 seating this bullet shorter. Half a grain or so reduction works well.
If H110/296 I\’d not available, I have found that Accurate 11FS is an exact match in Velocity and charge weight. The only difference is an addition of a flash suppressant in the powder. I use these 3 powders interchangeably in a dozen or so calibers and they are all about the same depending on lot #\’s. I hope this helps.