Finnish M39 600 Yard D166 Ammo Test
This video details a 600-yard accuracy test of a Finnish M39 Mosin-Nagant rifle using custom handloads featuring 200-grain Lapua D166 bullets and Vihtavuori N140 powder. The expert instruction highlights the challenges of long-range shooting with iron sights and significant crosswinds, demonstrating a practical approach to assessing ammunition performance. The assessment concludes the D166 load is highly effective for the M39 platform at extended distances.












