300 Blackout 115gr Solid Copper Fracturing Projectiles (Qty 50)

What this is

This is the 300 Blackout 115gr Solid Copper Fracturing Projectiles (Qty 50).

This is the 115gr solid copper fracturing projectile for 300 Blackout, sold as a bare reloading component. 300 Blackout is unusual among rifle calibers in that the same case is loaded both supersonic and subsonic depending on the bullet, and 115gr sits firmly on the supersonic side of that split.

Supersonic role in 300 Blackout

At 115gr this is one of the lighter options for the caliber, which means higher velocity for a given powder charge and a flatter trajectory out to typical carbine engagement distances. The fracturing design is built to transfer energy quickly on impact rather than penetrate deep as a single mass, the traditional role for a lighter, faster 300 Blackout bullet.

115gr versus our 125gr

We also stock a 125gr fracturing projectile in this caliber. The heavier option trades a small amount of velocity for more retained momentum and a slightly better ballistic coefficient, worth it if the rifle sees regular use past 100 yards; inside that range the difference is marginal and 115gr’s slightly flatter trajectory is the easier bullet to shoot.

Frequently asked questions

Should I use the 115gr or 125gr in my 300 Blackout? Both are supersonic-role weights. 115gr is faster and flatter at short range; 125gr carries more momentum and a slightly better ballistic coefficient, the common choice when the rifle will also be used past 100 yards.

Do these work in a suppressed 300 Blackout build? Yes, at supersonic velocity, but supersonic ammunition still produces a sonic crack downrange even suppressed. For a quiet suppressed build use one of our subsonic-rated 300 Blackout projectiles instead.

What barrel length is this designed around? 300 Blackout is built to work across the full range of AR pistol and rifle barrel lengths, from around 7 inches up to 16, though velocity and therefore fracturing performance drops as barrel length shortens.

Related reading: 8.6 Blackout ammunition, 300 Blackout ammunition, or the ballistics calculator. Reference: SAAMI pressure and dimensional standards.

{“@context”:”https://schema.org”,”@type”:”FAQPage”,”mainEntity”:[{“@type”:”Question”,”name”:”Should I use the 115gr or 125gr in my 300 Blackout?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Both are supersonic-role weights. 115gr is faster and flatter at short range; 125gr carries more momentum and a slightly better ballistic coefficient, the common choice when the rifle will also be used past 100 yards.”}},{“@type”:”Question”,”name”:”Do these work in a suppressed 300 Blackout build?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Yes, at supersonic velocity, but supersonic ammunition still produces a sonic crack downrange even suppressed. For a quiet suppressed build use one of our subsonic-rated 300 Blackout projectiles instead.”}},{“@type”:”Question”,”name”:”What barrel length is this designed around?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”300 Blackout is built to work across the full range of AR pistol and rifle barrel lengths, from around 7 inches up to 16, though velocity and therefore fracturing performance drops as barrel length shortens.”}}]}