Hornady 270 cal .277 130gr SP Projectiles MTM CASE GUARD VISE Effective against protozoa: Yes Effective Effective against protozoa: Yes Effective against bacteria: Yes Effective against viruses: No Effective against particulate: Yes Effective against chemicals toxins: NoWeight: 11 Nylon bristles work well for most general cleaning applications and with today’s new generation bore cleaners that can chemically attack brass and bronze bristles Our traditional line of bullets feature exposed lead tips for controlled expansion and hard hitting terminal performance Most feature our exclusive InterLock® design — a raised ring inside the jacket that is embedded in the bullet's core that keeps the core and jacket locked together during expansion to retain mass and energy