[cukrus]

The 180 gr bullet may be too long for the 1894 Marlin in .357 mag case. Hodgdon Data Manual No. 23 has 200 gr lead bullet loads  with HP-38 using 2.5 to 3.2 gr in .38 Sp. and 3.4 to 4.2 gr in .357 mag.  This source lists 160 gr lead bullet loads with HP-38 using 2.7 to 3.7 gr in .38 Sp. and 3.0 to 3.9 gr in .357 mag.