Loading product…
Where is it going?
Federal Premium
.223 Rem · 77gr Sierra MatchKing boat-tail hollow point · Federal brass
Checkout isn't live yet. The cart works and holds what you put in it, but no order can be placed and no card is taken.
Drawn to the round's real proportions. Photography is being shot.
| Caliber | 5.56×45 NATO |
|---|---|
| Chamber marking | .223 Rem |
| Bullet weight | 77 gr |
| Bullet type | Sierra MatchKing boat-tail hollow point |
| Muzzle velocity | 2,720 fps |
| Casing | Federal brass |
|---|---|
| Primer | Gold Medal benchrest |
| Recommended twist | 1:8 or faster |
| Lead-free | No |
Not sure what one of these means? Ask us — a person who shoots will answer.
Federal's load number GM223M3, published at 2,720 fps. Sierra specifies a 1×8 inch or faster twist for the 77 grain MatchKing, which is where the twist figure on this page comes from — the ammunition maker does not publish one.
Marked .223 Rem on the box, not 5.56. A 5.56 chamber shoots it and a .223 chamber shoots it, which is the safe direction of that pair.
Written by the people who buy it.