S&W Head Stamped and IK Head Stamped .308

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Nathan231

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I have 3 rounds of .308 that havs S&W headstamp and appear to be 140-150 grains. They have a dotted ring on the bullet where it is meeting the brass. Any info about these?

I have 2 rounds of .308 that has IK head stamped. The primers have red paint around the outside of them. Appear to be 160-180 grain. Are these corrosive?
 
IK translates to Igman Zavod, Konjic, Yugoslavia. It may or may not be corrosive.

S&W, unsurprisingly, indicates ammo made in Ohio by Smith and Wesson. It is unlikely to be corrosive.
 
That dotted ring is called a cannalure. It is commonly refered to as a crimping grove (for crimping) and can also be used as a guide for bullet seating.
 
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