I always liked varget and 4064 under 139 Hornady and 140 NBT. The IMR always seemed a hair more accurate. BOTH same mv.
2900-2960 in 2 700s, chopped to 21"....
280Ak - I ran 47 Varget under some 120s...may have a little more room if you want it, can't argue w/.3s!
If loading today, I'd run 44-45 Varget or 4064 under a 140 AB but nothing wrong with the 120 BT, on deer. Same placement = dead deer no doubt.
I'd be interested in see how a 120 would do w/4064 and 4320, the BT and TTSX being the only ones, the Sierra will work, but not so fond of that one, the vmax is a varmint only IMO.
On the H414s...it is IIRC about the same as W760, meters like water, often gets good speeds, and good accuracy, but I never had the TIGHT groups consistently with the ball powders in the 7/08 IME. Serviceable? Sure, but not been the best for me.
That said, the first factory load Rem 140 CL actually was the Hornady 139, it was used over 48 or 49gr of W760, yet later runs were cut one or two grs. Not sure what the newest 'improved 140 CL' load uses, likely same powder/charge.
The old 139 SP or BTSP will wad up one hole groups in good rifles w/good loads and shooter. Was ALMOST as accurate as the BT, but VERY CLOSE...again, IME. YMMV.
I'd not be surprised if the SST will match the BT for accuracy. I shot 3 into like .4" w/a 7BR rifle a few yrs ago, sweet....esp. w/the 4x I was using!
