What rifle actions and calibres are compatible with the Pro-Shot BG4 bore guide?

The Pro-Shot BG4 bore guide is specifically tailored for Sako Large Action models (such as A3, A4, L61, and Finnbear) as well as Weatherby Vanguard and Howa 1500 bolt-action receivers. It is engineered to fit centerfire rifles chambered within the .26 to .30 calibre bracket, making it ideal for popular Australian hunting rounds like 6.5mm Creedmoor, .270 Win, 7mm Rem Mag, and .308 Win.

Will this bore guide prevent harsh cleaning solvents from damaging my rifle's stock and trigger mechanism?

Yes, the BG4 features a chemical-resistant Delrin tip fitted with an integrated rubber chamber O-ring that creates a tight seal inside the chamber. This prevents aggressive bore solvents, copper strippers, and carbon debris from leaking backward into the magazine well and sensitive trigger mechanisms during outback cleaning sessions.

Does the Pro-Shot BG4 require any electrical certification or power source for use in Australia?

No, the Pro-Shot BG4 is a completely passive, unpowered mechanical firearm maintenance accessory requiring zero electrical power. Because it contains no electronics, wiring, or plugs, it is exempt from Australian electrical compliance certifications such as SAA or RCM.

What cleaning rod length should I pair with this 12.5-inch bore guide?

Because the BG4 guide tube measures approximately 12.5 inches in overall length, you will need to account for this extra distance inside the action. We recommend pairing it with a longer cleaning rod, such as the Pro-Shot 50-inch stainless steel rifle cleaning rod for .30-.338 calibre, to ensure you maintain adequate working length to push patches completely through your barrel.

Rifle Bore Guide - Pro-Shot BG4

The Pro-Shot "Stopper" Series Adjustable Bore Guide (Model: BG4) is a dedicated bolt-action firearm maintenance tool engineered for centerfire rifles chambered from .26 to .30 calibre. Designed to replace the rifle bolt during the cleaning process, this mechanical guide features an overall length of 12.5 inches (31.75 cm) to establish precise concentric alignment between the cleaning rod and the bore centerline. By locking securely into the receiver raceway, it prevents cleaning rod flex, throat wear, and chemical contamination of internal mechanisms.

Key Features

Bore and Throat Protection: Aligns the cleaning rod perfectly with the bore axis to eliminate rod rubbing, bowing, and premature rifling wear at the chamber throat.
Action and Trigger Sealing: Equipped with a chemical-resistant Delrin tip and an integrated rubber O-ring that seals against the chamber wall, preventing harsh bore solvents, copper strippers, and residue from leaking into the magazine well and trigger assembly.
Integrated Solvent Port: Features an accessible cutout port that allows users to apply cleaning solvents directly onto patches or brushes inside the guide without spilling chemicals onto the rifle stock.
Adjustable Locking Collar: Constructed with an anodised aircraft-grade aluminum tube and an adjustable collar with a threaded brass locking pin to firmly secure the guide inside the bolt raceway during cleaning strokes.

Specifications

Product Model: Pro-Shot BG4
Calibre Compatibility: .26 to .30 Calibre (including 6.5mm, .270, 7mm, .308 Win, .30-06, and .300 Win Mag)
Action Compatibility: Sako Large Action (A3, A4, L61, Finnbear), Weatherby Vanguard, and Howa 1500 bolt-action receivers
Overall Length: 12.5 inches (31.75 cm)
Materials: Aircraft-grade anodised aluminum sleeve, Delrin guide tips and collars, rubber chamber O-rings, and a brass locking pin
Power Requirements: Passive mechanical tool (0V / non-powered)
Recommended Cleaning Rod Length: 36 to 40 inches minimum working length

Who is the Proshot Bore Guide - 26 - 30 Cal To Suit Sako Large Action, Wby Vanguard for?

Sako large action rifle owners — maintains concentric rod travel on Sako A3, A4, L61, and Finnbear centerfire receivers while using this bolt-action rifle bore guide across its .26 to .30 Calibre capacity.
Weatherby Vanguard and Howa 1500 bolt-action shooters — seals the chamber throat across the 12.5 inches overall guide tube length to isolate the trigger mechanism from solvents during regular maintenance.

Less suitable for: Rifles chambered in calibres smaller than .26 or larger than .30, as well as incompatible actions like the Remington 700 or Tikka T3; these configurations require a dedicated sub-calibre, large-bore, or action-specific bore guide with matching bolt sleeve dimensions.

SKU	PS41306LP
Model #	BG4
Brand	Pro-Shot
Shipping Weight	1.0000kg

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Pro-Shot Bg4 Bore Guide 26 To 30 Cal Sako Weatherby Vanguard

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