the 22-250 is slightly smaller in diameter than the .223
[Linked Image from neconos.com]
Here is a lineup of some popular calibers to give you an idea of the size of the 22-250. #5 from the left is a .223, and #7 is a 22-250; notice the difference?
[Linked Image from varmintal.com]
17 Ackley Hornet -- 20 gr. Berger MEF Moly
17 Mach IV -- 20 gr. Berger Moly
17 Rem -- 25 gr. Hornady
22 K-Hornet -- 40 gr. Nosler Ballistic Tip
223 Rem -- 33 gr. Hornady V-Max Moly
23/40 -- 40 gr. Nosler Ballistic Tip Moly
22-250 Imp/40° -- 40 gr. Nosler Ballistic Tip Moly
243 Win -- 95 gr. Nosler Ballistic Tip Moly
243 Ackley Improved -- 60 gr. Sierra HP
7mm Rem Mag -- 150 gr. Nosler Ballistic Tip

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