Pork Shredder, 8.6 Blackout, 342gr Expanding Subsonic Hunting Ammunition, Punisher Series – 20 Round Box

Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.

The 8.6 Blackout 342gr subsonic from Gorilla Ammunition is a CNC solid copper expanding hunting load built for suppressed platforms where deep penetration through heavy-bodied game matters more than surface fragmentation. 8.6 Blackout is a short-action cartridge derived from the 6.5 Creedmoor case, necked up to accept .338-caliber projectiles and optimized for subsonic velocities from short-barreled rifles. The Pork Shredder variant runs a 342-grain expanding monolithic bullet — the heaviest subsonic option in Gorilla’s lineup — engineered to open a single wound channel at 1,000 fps from a 12-inch barrel. Hog hunters and medium-game shooters using suppressed AR-pattern rifles in 8-inch, 12-inch, or 16-inch configurations get higher momentum and straighter tracking than lighter fracturing projectiles deliver.

Built for the Box

Gorilla Ammunition machines each Pork Shredder projectile from solid copper bar stock on Swiss-turning CNC equipment, then inspects every round through a multi-stage QC process before boxing. The 342-grain bullet uses a hollow-point cavity designed to expand reliably at subsonic velocities — no reliance on fragmentation or high-speed impact to initiate upset. Factory-new brass cases hold powder charges metered for consistency across temperature swings, and primers seat to uniform depth. The load requires a 1:3 twist barrel to stabilize the long, heavy bullet; shooters running 1:5 or slower twists will see tumbling and keyholing. Overall cartridge length is 2.79 inches ±.005, cut for reliable function in AICS-pattern magazines and AR-10 lowers adapted to 8.6 BLK. Expected accuracy is sub-2-inch groups at 100 yards from a bench rest with proper barrel harmonics.

Technical Breakdown

The Pork Shredder name references the primary use case — hog hunting where thick hide, heavy bone, and layered muscle require straight-line penetration at close to medium range. The 342-grain bullet carries higher sectional density than the 285-grain fracturing option, which translates to deeper straight-line wound channels through shoulder mass and vitals. Copper construction eliminates lead fouling and meets lead-free hunting regulations in California and similar jurisdictions. For lighter bullets and supersonic options, browse the full 8.6 Blackout ammo category.

Matching It to Your Build

This load pairs with suppressed short-barreled rifles and AR-pattern builds chambered in 8.6 Blackout where hearing-safe subsonic velocities keep noise below 140 dB. The 342-grain expanding bullet works best on hogs in the 150–300-pound range and medium game like whitetail deer at distances inside 150 yards. Shooters running gas-operated semi-autos should verify their adjustable gas block is set for subsonic cycling — 1,000 fps generates lower backpressure than supersonic loads, and some platforms require a partially closed gas port to cycle reliably. Bolt-action shooters get the most consistent accuracy from the load since there’s no carrier bounce or timing variation. Verify your barrel twist before ordering — only 1:3 twist barrels stabilize the 342-grain bullet; slower twists will tumble the projectile.