I shoot the 55 SBK in both my AR and 22-250 and believe you will like them. For the AR the magazine will limit the OAL of the cartridge. I set my COAL to 2.255 for the AR. I load them behind both Varget and H335 depending on what powder I have on hand. Never tried CFE since I have had good results with the two mentioned. Load all my AR ammo in a progressive.
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"Emergencies have always been the pretext on which the safeguards of individual liberty have been eroded" - F.A. Hayek
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