armoredman
Member
Weird, the only .308 bore I knew of in 7.62x39 was the original Mini Thirty. Bear Creek sells .312 barrels, and AR Stoner apparently does .311. Definitely slug the bore, by far most important.
My Colt AR likes a .310" bullet. Two inch groups at 75 yards with open sights, about as good as I can do. It's a Clinton era "ban" rifle, if that makes a difference. I haven't slugged the barrel so I don't know the bore diameter, it may shoot .311" bullets better.Weird, the only .308 bore I knew of in 7.62x39 was the original Mini Thirty. Bear Creek sells .312 barrels, and AR Stoner apparently does .311. Definitely slug the bore, by far most important.
Nope.I kinda feel like testing for accuracy would be pointless so i’m leaning toward using minimum charges. I don’t want to get a bunch of components only to have him lose interest. The Hornady app has data for their 150 grain 308 FMJ. We can try those first I suppose.
I was just going to do minimum charges but if accuracy testing is worth it, I guess we’ll try it, even with iron sights.Nope.
The Hornady 123gr 7.62/.310 bullets are what you want.
They are also available in an Interlock spire point which are great for hunting and work perfectly in my Tula Arsenal SKS
I use IMR 4198
I’ll check mine when I get home.I was just going to do minimum charges but if accuracy testing is worth it, I guess we’ll try it, even with iron sights.
Interestingly enough, I looked at MidwayUSA and found two 255gr FXT, (Hornaday), bullets for 7.62x39mm that are .3115 inch diameter. The Lee molds drop 155 and 160 grain bullets at .312. My NOE drops a 129gr slug at .314, but I always size all cast bullets down to .311 when loading this caliber.I checked the Hornady App for this cartridge and found something interesting. They have data for 110, 123, 130, and 150-155 grain bullets. Only the 123 grain bullets are listed as 0.310”. The others are 0.308”.
I think a 255gr is a huge bullet for an AK or SKS.Interestingly enough, I looked at MidwayUSA and found two 255gr FXT, (Hornaday), bullets for 7.62x39mm that are .3115 inch diameter. The Lee molds drop 155 and 160 grain bullets at .312. My NOE drops a 129gr slug at .314, but I always size all cast bullets down to .311 when loading this caliber.
Why run 300bo when 300hmr does everything super better... if you have a can or are really going to get one the ok....There’s a pretty good argument that 300 BO made a big leap over 7.62x39 when the cheap Russian ammo went away. There is still some out there but for the most part I haven’t seen any steel cased AK ammo in a while.
I keep a bolt action for each autoloader.All this research makes me want a bolt action now.