Banjo G7 chord (Double C)G seventh on the 5-string banjo: 2 4 5 5, and 6 more shapes

Frets, string 4 to string 1: 2 4 5 5 (from the 2nd fret)

1. String 4 (C): 2nd fret, index finger, D
2. String 3 (G): 4th fret, middle finger, B
3. String 2 (C): 5th fret, ring finger, F
4. String 1 (D): 5th fret, little finger, G
5. String 5, the short g: open, G, in the chord

Sounds: D B F G  ·  G7 is G, B, D, F (1 · 3 · 5 · ♭7)

The 5th string: the short g is the root of G7, so let it ring.

With a capo: on the 5th fret it’s 2 2 0 4 (frets counted from the capo), an open D7 shape. Spike the 5th string at the 10th fret to keep it in tune with the capo.

Double C tuning: gCGCD, the short 5th string first, then strings 4 to 1.