I was gonna try working up some 223 loads with blc2 and 52 grain speer hp. I have the speer data, but didn't know if any of you had pet loads for this powder and bullet combo.
I can't speak to Speer bullets but my favorite prairie dog round is a 52 gr Sierra HP with 26.0 grs of H335 with a Remington 7 1/2 primer. It's a tack driver and you can fill the freezer quickly.
One of my favorite match loads for 300yds and less is 26.5gr BL-C(2) behind a Sierra 52 or 53gr HP....don't know why Speer's would be any different. Has worked great for me in multiple barrels and twist rates.
I know you asked about 52g TNT, I use the 50g TNT, over 21.0/IMR 4198, 2.250 OAL.
I use it in a A2 Service Rifle for Practice H. Power, Heavy 1n9 w/ Float Tube.
Found it in a Old Lyman Book their Accuracy Load.
Could not get the Rifle to Shoot Groups till I tried it.
Bought 8# of 4198, can use it in my 45/70 also.
Good Luck
Barman54
Out
I've tried it and the Sierra with 3031, H335, Tac, and WC846. Never did find a load my rifle liked. Maybe just me. I have a few left, so maybe I'll give it another shot
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