The 8×58mmR Danish Krag has 4.55 ml (70.2 grains H₂O) cartridge case capacity.

8×58mmR Danish Krag cartridge dimensions.
All sizes in millimeters (mm).
The dimensions of this drawing come from the ammunition manufacturer RWS and differ somewhat between various sources.

Americans would define the shoulder angle at alpha/2 ≈ 16.5 degrees.
Ø lands = 7.89 mm (0.311 in), Ø grooves = 8.20 mm (0.323 in).

There are no official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings for this cartridge (2017).

Varying sources quote the 8×58mmR Danish Krag can handle from 180.00 MPa (26,107 psi) up to 306.00 MPa (44,382 psi) Pₘₐₓ piezo pressure.
This Pₘₐₓ level range is extreme, so loading up to a high Pₘₐₓ level can be dangerous in historic arms.

A dangerous error can occur when confusion occurs between the 8×58mmR Danish Krag and the 8×58mmR. The latter being an old German differing chambering.
The 8×58mmR Danish Krag has 4.55 ml (70.2 grains H₂O) cartridge case capacity.
8×58mmR Danish Krag cartridge dimensions. All sizes in millimeters (mm). The dimensions of this drawing come from the ammunition manufacturer RWS and differ somewhat between various sources.
Americans would define the shoulder angle at alpha/2 ≈ 16.5 degrees. Ø lands = 7.89 mm (0.311 in), Ø grooves = 8.20 mm (0.323 in).
There are no official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings for this cartridge (2017).
Varying sources quote the 8×58mmR Danish Krag can handle from 180.00 MPa (26,107 psi) up to 306.00 MPa (44,382 psi) Pₘₐₓ piezo pressure. This Pₘₐₓ level range is extreme, so loading up to a high Pₘₐₓ level can be dangerous in historic arms.
A dangerous error can occur when confusion occurs between the 8×58mmR Danish Krag and the 8×58mmR. The latter being an old German differing chambering.
8×58mmR Danish Krag