This paper discusses the chronology of burial grounds containing specific Seima-Turbino type bronze weaponry (spears, knives, and celts). The “transcultural” Seima-Turbino phenomenon relates to a wide distribution of specific objects found within the sites of different Bronze Age cultures in Eurasia, not immediately related to each other. The majority of the Seima-Turbino objects represent occasional findings, and they are rarely recovered from burial grounds. Here, we present a new set of 14C dates from cemeteries in western Siberia, including the key Asian site Rostovka, with the largest number of graves containing Seima-Turbino objects. Currently, the presented database is the most extensive for the Seima-Turbino complexes. The resulting radiocarbon (14C) chronology for the western Siberian sites (22nd–20th centuries cal BC) is older than the existing chronology based on typological analysis (16th–15th centuries BC) and some earlier 14C dates for the Seima-Turbino sites in eastern Europe. Another important aspect of this work is 14C dating of complexes within specific bronze objects—daggers with figured handles—which some researchers have related to the Seima-Turbino type objects. These items are mostly represented by occasional finds in Central Asia, however, in western Siberia these have been recovered from burials, too. The 14C dating attributes these daggers to the end of the 3rd millennium cal BC, suggesting their similar timing to the Seima-Turbino objects. Further research into freshwater reservoir offsets in the region is essential for a more reliable reconstruction of the chronology of the Seima-Turbino phenomenon and the daggers with figured handles.