Load for 10.5 barrel with H110 and Sierra 175 HPBT

[Scalce]

The barrel is a 10.5 SS 1x8 twist made by Teppo Jutsu with about 300-400 rounds through it.

I am not getting great results with H110 as I get severe stringing issues.

I need to run a bunch of supersonic loads to see if it helps the barrel settle down.

I am now trying AA#9 and 2400 to see if that works any better.

So far AA#9 does not show nearly the vertical dispersion that H110 does.