The "IK21" headstamp found on some brass casings is an
international headstamp code for Igman, an ammunition manufacturer based in Bosnia and Herzegovina; it is not a Remington code.
While the "IK21" brass may be sold by some retailers in mixed lots with other brands, including Remington, the...
Below are two Remington .223 cartridges. The left has no issues decapping primers. The right will break decapping pin every time. I have 3 different presses and all have the same results. Can someone tell me if the red paint and or the IK21 on the right means something im unaware of . I’ve...