johned
Member
How many thousandths can I oversize a bullet being fired through a 308 bore....safely? 312?
Thanks,
John
Thanks,
John
Last edited:
Bullit OVERSIZE
- Thread starter johned
- Start date
- Status
R.W.Dale
Member
I would definitely NOT go .004" no way no how.
However I've found + or - .002" to be completely acceptable and largely indistinguishable on target.
Why are you asking this?
posted via mobile device.
However I've found + or - .002" to be completely acceptable and largely indistinguishable on target.
Why are you asking this?
posted via mobile device.
steveno
Member
stick with .038 bullets. .312 bullets are intended for the 303 British , 7.7 mm Jap and I believe the 7.65 Argentine Mauser
R.W.Dale
Member
He tells us his bore is .308"
I have no reason to suspect he means anything else since he's not specifically saying "across the lands" Either way my advice isn't especially caliber specific.
posted via mobile device.
blarby
Member
What kind of bullet, lead or jacketed ?
Have you slugged your bore to determine its diameter ?
Have you slugged your bore to determine its diameter ?
And you believe based on his assertion this is an accurate number?
Do you actually think a person asking this kind of question knows how to slug his barrel?
.308" barrels are seldom .308", unless you have a premium barrel cut from a select match blank. Most factory barrels are .309" to .310" and can shoot .311" bullets just fine. In fact, many military rifles shoot .311" bullets more accurately because they fit the bore better.
He needs to have his barrel slugged.
R.W.Dale
Member
Its a real simple question asked. Not everyone wants every simple question to get F.Guffied into a long winded dissertation more suitable for accuratereloading than thr. I simply refuse to treat a poster like they know noting simply because the question is simple and doesn't take up two full page scrolls to read.
The guy simply asked of course assuming .308" but it doesnt matter. The question of how much oversize can still be answered just the same.
I personally wouldn't go .004" but I do have a factory rifle that every time I'm shooting the cartridge its chambered for I'm shooting bullets .002" oversized (as verfied on a slug and stuck bullets ;-)
BTW go mic on an accurate tool any bullet you care to check. They're almost always .0005" undersized
posted via mobile device.
The guy simply asked of course assuming .308" but it doesnt matter. The question of how much oversize can still be answered just the same.
I personally wouldn't go .004" but I do have a factory rifle that every time I'm shooting the cartridge its chambered for I'm shooting bullets .002" oversized (as verfied on a slug and stuck bullets ;-)
BTW go mic on an accurate tool any bullet you care to check. They're almost always .0005" undersized
posted via mobile device.
well im wondering the same thing for my yugo tok. i want to reload the brass but finding 308 pistol leads is a hassle. im thinking of using the 32 s and w long 100 gr. leads for it as well. i bet it would work. if it doesnt ill get a sizing die and take them down to 309 or so
johned
Member
From:
RW,
Here is m,y pickel.... I own a CZ VZ 58 Assault Rifle. Like everything Czech, it is special in many ways. Unfortunately, it is chambered in 7.62 X 39 but instead of the listed diameter bullet being 308, as Sierra says, it is bored to .3121. Just a tad oversize and, as you might expect, not quite the tack driver. I have a pee pot full of 310, 311, and 312 Sierra bullets to try in the 312 bore. I think I can get it to perform adequately, for a Assault Rifle. but I am not trying to make a bench gun out of it. 311 and 312 will probably work fine.
Now, to utilize the thousands of rounds of Mil Surp 7.62 X 39 ammo I have stocked, I am going to "build" my own 58. I have purchased a receiver, a kit gun that has all the parts except the receiver and I will purchase a match grade 308 Bull Barrel and chamber it for 7.62 X 39. This will match the reloading charts and EVERY COMMERCIAL ROUND of that calibre I have miked and shot. Now those Czechs aren't anybodies fools and they must have expected the odd 312 bullet to "happen" and I assume they didn't want the gun to choke to death on it. I was pondering how careful I would have to check my ammo.
Thank you all for some very interestring replies. Is it the c onsensus that 311 will work but 312 might be dangerous? 310 max?
Thank you all,
John
R.W.Dale
Member
Join Date: October 14, 2005
Location: Northwest Arkansas
Posts: 8,422
I would definitely NOT go .004" no way no how.
However I've found + or - .002" to be completely acceptable and largely indistinguishable on target.
Why are you asking this?
posted via mobile device.
__________________
Quote:
"Deadly assault weapons have no place in Massachusetts. These guns are not made for recreation or self-defense. They are instruments of destruction with the sole purpose of hunting down and killing people"
Governor Romney 2004
R.W.Dale is online now Report Post Quick reply to this message
RW,
Here is m,y pickel.... I own a CZ VZ 58 Assault Rifle. Like everything Czech, it is special in many ways. Unfortunately, it is chambered in 7.62 X 39 but instead of the listed diameter bullet being 308, as Sierra says, it is bored to .3121. Just a tad oversize and, as you might expect, not quite the tack driver. I have a pee pot full of 310, 311, and 312 Sierra bullets to try in the 312 bore. I think I can get it to perform adequately, for a Assault Rifle. but I am not trying to make a bench gun out of it. 311 and 312 will probably work fine.
Now, to utilize the thousands of rounds of Mil Surp 7.62 X 39 ammo I have stocked, I am going to "build" my own 58. I have purchased a receiver, a kit gun that has all the parts except the receiver and I will purchase a match grade 308 Bull Barrel and chamber it for 7.62 X 39. This will match the reloading charts and EVERY COMMERCIAL ROUND of that calibre I have miked and shot. Now those Czechs aren't anybodies fools and they must have expected the odd 312 bullet to "happen" and I assume they didn't want the gun to choke to death on it. I was pondering how careful I would have to check my ammo.
Thank you all for some very interestring replies. Is it the c onsensus that 311 will work but 312 might be dangerous? 310 max?
Thank you all,
John
R.W.Dale
Member
Join Date: October 14, 2005
Location: Northwest Arkansas
Posts: 8,422
I would definitely NOT go .004" no way no how.
However I've found + or - .002" to be completely acceptable and largely indistinguishable on target.
Why are you asking this?
posted via mobile device.
__________________
Quote:
"Deadly assault weapons have no place in Massachusetts. These guns are not made for recreation or self-defense. They are instruments of destruction with the sole purpose of hunting down and killing people"
Governor Romney 2004
R.W.Dale is online now Report Post Quick reply to this message
johned
Member
From Dagunman:
well im wondering the same thing for my yugo tok. i want to reload the brass but finding 308 pistol leads is a hassle. im thinking of using the 32 s and w long 100 gr. leads for it as well. i bet it would work. if it doesnt ill get a sizing die and take them down to 309 or so.
From John
The Tok doesn't need jacketed bullets. lead fire forms pretty good. They also size down very easily. All of my VZ 52 ammo is jacketed, by the way. If you start feeding it the right size bullets the accuracy will simply astound you. I shoot water gallon jugs at 100 yards and hit them 50%. RELOAD for the 7.62 X 25 bottle neck.
The bore on my VZ 52 is 3075 and all my mil surp ammo is 306-307 and its adequate. My 308 hand loads are terrific and the gun lives up to its rep of being the pistol that shoots like a rifle. 1,700 + fps with 88 grain bullets.
Good luck,
John
well im wondering the same thing for my yugo tok. i want to reload the brass but finding 308 pistol leads is a hassle. im thinking of using the 32 s and w long 100 gr. leads for it as well. i bet it would work. if it doesnt ill get a sizing die and take them down to 309 or so.
From John
The Tok doesn't need jacketed bullets. lead fire forms pretty good. They also size down very easily. All of my VZ 52 ammo is jacketed, by the way. If you start feeding it the right size bullets the accuracy will simply astound you. I shoot water gallon jugs at 100 yards and hit them 50%. RELOAD for the 7.62 X 25 bottle neck.
The bore on my VZ 52 is 3075 and all my mil surp ammo is 306-307 and its adequate. My 308 hand loads are terrific and the gun lives up to its rep of being the pistol that shoots like a rifle. 1,700 + fps with 88 grain bullets.
Good luck,
John
johned
Member
Another curious fact: The CZ model 550 comes in 7.62 X 39 and that's a bolt gun. CZ has a rep for accuracy out of the box. Their 7.62 X 39 is listed as having a bore of .311. That's a hunting rifle, now. Czech commercial ammo in that calibre is .308, as I said.
John
John
243winxb
Member
Worry first about the neck of the loaded round being to tight/crimped in the chamber.
johned
Member
243winxb
Member
Join Date: July 7, 2004
Location: USA
Posts: 4,134
Worry first about the neck of the loaded round being to tight/crimped in the chamber.
__________________
http://www.photobucket.com/firearmsreloading < Photos > http://www.photobucket.com/joe1944usa
243winxb is offline Report Post
SO VERY TRUE! I learned the hard way that "Starline brass" was too thick in the neck to allow a brass loaded with 308 to chamber in the 52. All that brass needed the neck turned. I ain't no bench pistol shooter.
Starline made a mistake in their original design. their stuff does fit the Lugar and Broom Handle, however....I think it was.
The brass sold loaded by all the commercial makers had neck thickness that was correct for the Tok and 52.
But, yes, brass thickness is an issue with the 52 and Tok.
Thanks for your clarification,
John
Member
Join Date: July 7, 2004
Location: USA
Posts: 4,134
Worry first about the neck of the loaded round being to tight/crimped in the chamber.
__________________
http://www.photobucket.com/firearmsreloading < Photos > http://www.photobucket.com/joe1944usa
243winxb is offline Report Post
SO VERY TRUE! I learned the hard way that "Starline brass" was too thick in the neck to allow a brass loaded with 308 to chamber in the 52. All that brass needed the neck turned. I ain't no bench pistol shooter.
Starline made a mistake in their original design. their stuff does fit the Lugar and Broom Handle, however....I think it was.
The brass sold loaded by all the commercial makers had neck thickness that was correct for the Tok and 52.
But, yes, brass thickness is an issue with the 52 and Tok.
Thanks for your clarification,
John
- Status