Buffalo Bore‘s Buffalo-Barnes Strictly Business ammunition in .357 Sig (brand part no. 25C20) loads a 125-grain Barnes TAC-XP bullet for shooters who want an expanding round that still penetrates as deep as a hard-cast bullet. This lead-free, all-copper hollow point is built to penetrate roughly 20 or more inches in flesh and bone while still expanding to roughly .55 caliber, a combination that’s hard to find in a single defensive round. Because the TAC-XP is machined from solid copper rather than jacketed, it holds together through denim, drywall, and other barriers without shedding fragments. For .357 Sig carriers who want maximum penetration without giving up expansion, this handgun ammunition is built for exactly that trade-off.

Key Specifications

• The chambering is .357 Sig, a high-velocity bottlenecked defensive cartridge.
• The bullet weighs 125 grains, a proven weight for the caliber.
• The bullet is a Barnes TAC-XP, an all-copper, lead-free hollow point.
• Penetration reaches roughly 20 or more inches in flesh and bone.
• The bullet expands to roughly .55 caliber on impact.
• The solid-copper hollow point holds together through barriers without shedding fragments.
• The case material is brass, giving reliable extraction and standard chamber compatibility.
• Cost runs about $2.15 per round, in line with premium lead-free defensive ammunition.
• Each box holds 20 rounds, a standard count for practice and carry rotation.

Frequently Asked Questions

How deep does this round penetrate? Buffalo Bore rates it at roughly 20 or more inches in flesh and bone.

How much does the bullet expand? It expands to roughly .55 caliber on impact.

Is this ammunition lead-free? Yes, the Barnes TAC-XP is machined from solid copper.

Buy Buffalo Bore .357 Sig 125gr Barnes TAC-XP

Most defensive loads force a trade-off between expansion and penetration, and Buffalo Bore built this one specifically to refuse that compromise. Order from our Lubbock, Texas gun shop and it ships fast to your door.