I've had good luck with Ramshot Xterminator in my 356 with lighter bullets, 180-200s. It gave me good velocity and accuracy in my '94. I also asked about TAC and was told Xterminator was already compressed, so with TAC being slower, it would result in lower velocities:
Caliber: .356 Winchester
Barrel length: 24”
Powder: Ramshot- X-TERMINATOR®.
Bullet weight: 180 grains.
Start load: 43.6 grains (2400 – 2500 Ft/p/sec)
Maximum load: 48.5 grains (2675 - 2775 Ft/p/sec).LD ca 106%
Bullet weight: 200 grains.
Start load: 41.0 grains (2200 – 2300 Ft/p/sec)
Maximum load: 45.5 grains (2500 – 2600 Ft/p/sec) LD ca 105%.
Bullet weight: 220 grains.
Start load: 39.2 grains (2175 – 2275 Ft/p/sec)
Maximum load: 43.5 grains (2400 – 2500 Ft/p/sec) LD ca 104%.
Bullet weight: 250 grains.
Start load: 37.4 grains (2050 – 2125 Ft/p/sec)
Maximum load: 41.5 grains (2300 – 2375 Ft/p/sec) LD ca 103%.
