Jan 20, 2018 · What the Hornady manual should say is "A very, very, very, small percentage of Ruger Mini-30's made in the last 30 years will have a .308" bore. All the rest will have one that is .310" bore" . I saw that statement in the Hornady manual and just ignored it.

Mar 10, 2018 · Ruger Mini-30 bore specs This rifle is chambered for the 7.62 x 39mm cartridge. This cartridge, traditionally, uses a projectile with a nominal diameter of .311 to .312 inch. At the time the Mini-30 was introduced very few bullet makers where producing .311/.312 inch bullets for reloading in the light 125-130 grain weight required.

Feb 14, 2019 · Broken Bear, in your original post, I believe you have the bore diameter switched. It is my understanding that the first couple years that the Mini 30 came out, it was using the .308 bore diameter, but then it was switched to .310-.311.

May 4, 2011 · IF--the groove diameter of the Mini 30's barrel is .308, then I would guesstimate that chamber pressure would be up somewhat due to the 7.62x39mm cartridge's .310 diameter gilding metal jacketed bullet being squeezed through it. Most imported ammo seems to have copper coated steel jacketed bullets of .310 dia.

Oct 13, 2023 · 1) .30 is a pretty general number when referring to .308 bores. There are also .311 bores, such as with the Combloc calibers, but .30 is also generically applicable to them as well. A .30 bore snake will work just fine for you rifle. 2) You don't need to remove your muzzle brake to use your bore snake.

Aug 19, 2016 · BUFFALO BORE FULL POWER+ U.S. 30 M1 CARBINE AMMUNITION 110 grain FMJ, Round Nose @ 2,100 fps 1638 fps - Ruger Blackhawk, 7.5 110 grain Soft Point, Round Nose @ 2,100 fps 1587 fps - Ruger Blackhawk, 7.5 110 grain JHP, Round Nose @ 2,100 fps 1587 fps - Ruger Blackhawk, 7.5 THE PROBLEM: The...

Aug 23, 2020 · Commencing in 1992 Ruger initiated a change to using .311/.312 nominal groove diameter, 1-10 inch right hand twist barrels in all Mini-30's. It was likely well into 1993 before all rifles coming of the production line incorporated the .311/.312 barrels

Apr 14, 2012 · Last February I bought a 30-year-old M77 in .270 Win. after debating long & hard over a same-age Winchester Model 70 in 30-06. The bore won out on the Ruger; the Winchester bore looked a bit rough. Shortly after I got it, I shot 4 rounds, more to see how the recoil would be (compared to my...

Mar 18, 2009 · The first production Mini-30 had a bore size of .308-.309, after several years of production; the .310-.311 bore size was manufactured in 1990 on the Mini-30. With factory ammunition, it is ok to shoot the .310-.311 ammunition through the first production .308-.309 bores. Your gun has a bore size of .310-.311.

Feb 9, 2016 · Ruger Mini-30 bore specs This rifle is chambered for the 7.62 x 39mm cartridge. This cartridge, traditionally, uses a projectile with a nominal diameter of .311 to .312 inch. At the time the Mini-30 was introduced very few bullet makers where producing .311/.312 inch bullets for reloading in the light 125-130 grain weight required.