Precision Engineering Custom Rifle Barrels   Deep Hole Drilling  Custom Machining Applications Certified Standard Materials Certified Standard Tests Direct Personalised Service Based in New Zealand

General Information

Vulcan is a small precision Engineering Company specialising in rifle barrel manufacture and deep hole drilling. Deep hole drilling is where the depth to diameter ratio is greater than 10 and up to 200.
Deep hole drilling has many applications in Industry; from Engine Camshafts and oil pressure manifolds to many Hydraulic applications; with Straightness tolerance of .001" (.025mm) per foot typically  and fine internal finish up to 4Ra. 

Vulcan has  been developing rifle barrel manufacture over the past few years and now can offer a range of barrel calibres and profiles; mainly from 4140 Chrome Molydenum Steel and 416 Stainless steel. The barrel steel used is supplied as a Certified Standard and is tested for strength and Non Destructively Tested for flaws. Mill Certificates and material Test Results are available on request.

The rifling (spiral grooves to impart spin to the bullet) is swaged into the drilled and honed cylindrical bore with a carbide 'Button', drawn through the bore at a defined 'Twist' or revolutions per foot, to suit the length of the bullet for a certain calibre. (Longer bullets have to spin faster  than shorter bullets of  the same calibre, to obtain stability and thus accuracy at the target.)

There is an argument raging in the rifle shooting world over 'Buttoned'  barrels verses 'Cut'  rifled barrels. Almost 99% of all rifle barrels produced today are 'Buttoned'.  With good process controls, both types of manufacture yield similar results.  The 'Cut' barrels running twice to three times more expensve to produce.  Vulcan can supply cut barrels for those special 'one off'  restoration Jobs where  the barrel is an odd size and/or has a unique rifling form, or  where the swaging process is not an option.  Vulcan produce only the barrel blank, and not the whole gun, so these parts do not constitute a gun part and are exempt the usual export and mailing hassles.

Barrels

• Most calibers and twists (.22 to .50 calibre, including 9mm para, .338 Lapua, .45 ACP, .45 L.C., 45-70 and .50 BMG).
• Cut rifling and octagonal external shapes.
• Fitting and blueing services available.
• Standard contours, others available.
• Material Test Certificates.
• M16 'drop In' exchange barrel units (supply old barrel for exchange, locking piece and gas block re-fitted).
• Barrels stress relieved and lapped.

Deep Hole Drilling

• Shaft diameter 50mm maximum
• 1,000mm (40") maximum depth
• 3mm (0.125") drill up to 25mm (1")
• Hydraulic and industrial applications 

Prices

Buttoned barrels range in price from approximately NZ$480 + GST (approx US$330) for a 4140 parallel blank 1.25" Diam., 30" long blank, and  up to NZ$580 + GST (approx US$400) for a profiled 416 Stainless barrel.

DEALER ENQUIRIES WELCOME.

Profiles