The 222 is a wonderfully accurate round. I too heard from Walt Berger about H335 and 52's - in fact I still have that and a couple other e-mails from him from probably early 2000's. Never tried it myself. I've shot the heck out of IMR-4198 and it's a great powder in the 222.
get yourself some CCI 400's, and 40 V-MAX's. I've had a couple of 222's that really liked:
21.0 IMR-4198
40 V-MAX
CCI 400
2.130" base to tip (or whatever the suggested "Book COL" is, nothing fancy)
This one runs about 3,300 in my old Rem 700 BDL and just drills.
40 V-MAX / NBT, 50 Blitz, 50 NBT / V-MAX, I especially like the accuracy of the 50 TNT's too.
52 HPBT, 52 Bergers. Good stuff!
H335, Reloder 7, I've shot Benchmark before, BLC-2, you won't have any problems finding a good combination quickly in the 222.
get yourself some CCI 400's, and 40 V-MAX's. I've had a couple of 222's that really liked:
21.0 IMR-4198
40 V-MAX
CCI 400
2.130" base to tip (or whatever the suggested "Book COL" is, nothing fancy)
This one runs about 3,300 in my old Rem 700 BDL and just drills.
40 V-MAX / NBT, 50 Blitz, 50 NBT / V-MAX, I especially like the accuracy of the 50 TNT's too.
52 HPBT, 52 Bergers. Good stuff!
H335, Reloder 7, I've shot Benchmark before, BLC-2, you won't have any problems finding a good combination quickly in the 222.