Possum Hollow Bore Guide #209 - .270 Win, .300 Win Mag Fits Rem 700, Win Model 70, Mauser 98 Multi-Snout/Intergral Solvent Port Bullet Brand Style_Custom Competition you should seal the muzzle

you should seal the muzzle end with tape to prevent evaporation

270 Sectional Density 0

485 Sectional Density 0

Also featuring poron and memory foam

With twice the amount of oversized bristles

Possum Hollow Bore Guide #209 - .270 Win, .300 Win Mag Fits Rem 700, Win Model 70, Mauser 98 Multi-Snout/Intergral Solvent Port Bullet Brand Style_Custom Competition you should seal the muzzleUsing a Possum Hollow Bore Guide is the easiest and safest way to preserve the accuracy of your bolt action rifle and to clean your rifle from the rifle's chamber end using a Bore Guide. Possum Hollow Bore Guides protect the chamber and bore of your rifle by guiding the cleaning rod through the barrel. An O ring seal prevents solvents or oils from seeping into the action and trigger mechanism. For optimum performance, add an optional solvent port