gun drilling

Off Center Gun Drilling and small hole drilling capabilities from 0.25" to 3.75" in diameter at lengths up to 116"

bta drilling

Often referred to as STS drilling, we'll utilize BTA drilling (or STS drilling) to achieve the highest possible tolerance standards.

ejector drilling

Our ejector drill can drill 4.5" in diameter up to 48" long.

Gundrilling / BTA Drilling

What is gundrilling

Most every industry has applications where precise deep hole drilling is required. Of course the firearms industry relies on gundrilling services. Other industries, including aerospace, medical, automotive, energy (oil/gas/subsea), heavy equipment and more also rely on precision deep hole gundrilling.

We’ve been providing gundrilling services since 19xx and have expanded our capabilities over the years. With this experience we’ve developed our expertise in machining challenging holes in a wide variety of alloys.  Off center gun drilling, small hole drilling, BTA and STS drilling. Different applications call for different solutions. Finding a qualified, knowledgeable gundrilling provider isn’t easy. With our experience, equipment and versatility you can count on the team at Midway Machine for your deep hole drilling needs.

Have a question about our capabilities, lead times, or your project cost? Give our team a call today!

Gundrilling was initially developed for producing gun barrels. It’s often the answer when deep, straight holes are required, without sacrificing reliability. Using thin cutting tools, gundrilling is used when the application calls for holes with a high depth to diameter ratio. 

Common Applications:

  • Fuel Injector Bodies
  • Aircraft Landing Gear
  • Oilfield Exploration Equipment
  • Pneumatic Cylinder Tubes
  • Automotive - Crankshafts
  • Medical - Implants
  • Renewable Energy
  • Turbine Shafts