G4beamline physics list for low energy (0.01-10 MeV) electrons?

Dear all,

I attempt to run a simple calorimetry simulation of electrons hitting a detector using G4beamline. For energies under ±25 MeV, it seems as if the physics lists that are designed to address the low-energy scenarios (e.g., FTFP_BERT_LIV/PEN) break down, and the total deposited energy in the detector greatly exceeds the initial momentum of the electrons.

I’d appreciate it if anyone could provide some valuable feedback concerning whether some other physics list can handle these energy ranges or whether G4beamline should be given up altogether within this context.

Thanks in advance