I have the Sierra book and was loading some 52 grain Match Kings. Tried the manual's "accuracy load" of 26.9 H335. Loaded them out a bit to 2.260. First five rounds out of the cold barrel went into one hole, so I quit right there.
Did you find the CFE results varied drastically depending on the temperature? seing as last weekend it was 11degrees , but the weekend before was -10 i was sticking with the extreme powders to keep my pressures and velocities more consistant. Have you found that varget accuracy changes less than the CFE with the temp or is this extreme stuff just a big marketing ploy?
Where did you get that stock pack OP??
Everyone is saying .223 is really finicky but I guess I am just lucky?
Looks like your groups are there. Not sure if this has been discussed but the only thing different I would have done from the begining is put on a solid set of rings and bases. From my experiences the rings and bases included in the Savage packages are the weakest link!
iduncant
What brand press and dies are you using?
A common mistake made by new reloaders is locking the expander button down off center and inducing excessive neck runout. I have a Stevens 200 .223 with a 26 inch bull barrel and two AR15 rifles and you should be getting much better accuracy with your new rifle.
Also my Stevens 200 came from the factory with a throat longer than my AR15 rifles have, meaning a long bullet jump. You should check your throat length by just barely bumping the neck of a new case in your die so the bullet will just move with firm finger pressure. Then chamber this test round and let the rifling seat the bullet and measure overall length.



























