I worked up a load for my 7.62x39 Ruger No.1 rifle using 150gr .308 bullets (my die set includes 2 expander balls, a .308 and a .311, so that .308 bullets can be used in 7.62x39 cases). According to the specifications, the 22" length / 9" twist barrel has a .311" nominal groove diameter (and .300" nominal bore diameter).
From the bench rest my rifle groups 2 to 3 inches at 100 yards with .308 bullets and I would guess group size should decrease if I load .311 bullets.
My handloads chronographed at around 2250 fps without any signs of excessive pressure. It's a very strong action so I might be able to safely get more speed. The Hornday LoadNotes for this cartridge lists 2100 fps as maximum in an SKS carbine with a 20" length / 7-1/2" twist barrel.
My 7.62x39 Ruger No.1 barrel has a surprising amount of free bore. Best accuracy is achieved by minimizing bullet seating depth to minimize the distance for the bullet to engage the rifling. Because of the generous free bore length, precise accuracy could be problematic with lighter and, therefore, shorter bullets.
It's a nice rifle and I really like it.
Ruger No.1-A 7.62x39 with Leupold VX-2 Ultralight 2-7x28mm
From the bench rest my rifle groups 2 to 3 inches at 100 yards with .308 bullets and I would guess group size should decrease if I load .311 bullets.
My handloads chronographed at around 2250 fps without any signs of excessive pressure. It's a very strong action so I might be able to safely get more speed. The Hornday LoadNotes for this cartridge lists 2100 fps as maximum in an SKS carbine with a 20" length / 7-1/2" twist barrel.
My 7.62x39 Ruger No.1 barrel has a surprising amount of free bore. Best accuracy is achieved by minimizing bullet seating depth to minimize the distance for the bullet to engage the rifling. Because of the generous free bore length, precise accuracy could be problematic with lighter and, therefore, shorter bullets.
It's a nice rifle and I really like it.
Ruger No.1-A 7.62x39 with Leupold VX-2 Ultralight 2-7x28mm
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