44gn of Varget will get that bullet humming around 3400fps.
JW
Is this your load? Because I can't find any published data that shows more than a 38gr charge.
I have four .243s and with two shooting the 80gr TTSX and two shooting 85 TSXs I find 38 or 38.5 is what works for all of them. I do not believe 44 would be a safe load.