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I know that everyone knows that every rifle likes a different load, but I have data on 6 .223 rifles that seems disprove that maxim:
a) a 1:9 twist bolt action CZ 527 Varmints with a 24 inch barrel
b) a 1:9 twist bolt action CZ 527 Varmint with a 25.4 inch barrel,
c & d) two 1:9 twist bolt action model 10 Savages with 24 inch barrels,
e) a 1:9 twist bolt action model 12 Savage with a 26 inch barrel,
f) a 1:8 twist Les Baer Super Varmint with an 18 inch barrel length.
All of them shoot 52 grain Sierra SMK #1410 HPBTs, 53 grain Sierra SMK #1400 Flat Base and 52 grain Berger #22408 Flat Base bullets better than any other bullets using H335, N133 or CLE223 powders.
Most of them have great results at 2.260 to 2.270 O.A.L even though all of the bolt action chambers are deep enough to seat them out further.
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