How to make a rifling grooves in Solidworks?

Follow the steps below...

  1. Step 1:

    Using front plane to sketch a circle, 200mm in Dia. and extrude it according the setting as shown...

  2. Step 2:

    Sketch a circle on the front plane that snap with the inner circle of the tube (same Dia. with inner circle).....and exit sketch~

  3. Step 3:

    Click on the "Helix and Spiral" under the Curves command, and select the circle that you had sketched just now.....Next, follow the setting bellow, and OK with it~

  4. Step 4:

    Sketch a point on front plane as a reference...and follow the next step~

  5. Step 5:

    ...sketch as the pic. shown

  6. Step 6:

    Click on Swept-cut, and follow the setting bellow...

  7. Step 7:

    Next click on the "Axis" under Reference Geo. command....and follow the setting as shown...

  8. Step 8:

    Click on Circular Pattern and follow the setting....

  9. Step 9: