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Old February 13th, 2018, 10:03 AM #1
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oversize bullets

While researching bullets for my 25-06 I saw a few in 6.5 that had BC of better than .6 at a weight of 105gn. Back when you'd get Winchester bulk bullets in 60# quantities(3360ea of 125gn JHP .357) we used to swage some with Corbin sizers to .355 with no issues.

But the Corbin page says .006 is max reducing size due to springback and resulting core seperation issues which would leave me with a .258 bullet.

Looking for some insight.


FWIW I found this and wonder how many lawyers would pass out reading it.

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Firing over-sized bullets with mild or moderate loads (tested safe in the weapon) is not an issue.

And, when it comes to lead bullets...
I suggest nay-sayers give P.O. Ackley's Handbook for Shooters and Reloaders, Vol. 1 a read. There is an article that discusses this very issue. The climax of that article:
Mr. Ackley had customers asking what to do with generous throats or chambers in .30-06 or 8mm-06 rifles. His solution? Leave the .308" or 8mm barrel on the rifle, but open the chamber to .35 Whelen, and shoot .35 Whelen ammo with lead bullets. When fired, the .358" lead bullet is drawn down to groove/bore diameter, doesn't cause pressure issues, and is quite accurate.

One of the most respected gunsmiths and experimental ballisticians of this century is telling you to fire .35 caliber bullets in a .30 caliber bore.... and people continue to argue over 0.001".

It's standard reloading practice:
Start low, and work up.
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Old February 13th, 2018, 10:42 AM #2
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I have reloaded for my 25-06 for many, many years (read many, many decades).. and there is no way I would ever try to stuff a .264 bullet in there, no matter what I did to it, short of a lead bullet (no plating or jacketing) that has been resized to .001" over (pretty standard for lead bullets). That said, I would never shoot lead (even coated) at those velocities (.258)(and yes, I have shot many a lead bullet through my 308 that were coated and sized properly).

You are just asking for issues. Get some .257 bullets and load em up!
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Old February 13th, 2018, 01:45 PM #3
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Don't do it!
If you want 6.5-06 performance, have it rebarreled to 6.5-06.
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Old February 13th, 2018, 03:12 PM #4
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Please don't fire 6.5 bullets down your .257" bore.
"Frankenmauser" there isn't putting his face on the stock and risking his eyes, hands, and brain housing group. He's just an anonymous and irresponsible poster on a website. He might recommend swallowing Tide Pods instead of Gain Pods on another forum for all we know.
I'll check my copy of Ackley's book tonight, but I don't think I'll find him recommending shooting 35 Whelen in a 30-06.
He shot oversize bullets in rifles to see what would happen, yes. He also had them in a jig/machine rest and fired them remotely while he was behind a steel shield.
People get surprisingly lucky doing exceedingly dangerous things. That doesn't make those things a safe practice.

PS I may be a 12 year old who's now going to Google this Ackley guy for all you know. Check some more sources, like Sticky and Dist1646 above, and Ackley's book before taking my word for it.
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Old February 14th, 2018, 11:13 PM #5
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So the consensus is, a .001 oversize bullet will blow up the rifle.


BTW I did a modest scan of Ackleys book and didn't spot the aforementioned statement. I scanned all the Q&A twice but only did a cursory scan on the articles in the front. May have been in the data section.
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Old February 14th, 2018, 11:23 PM #6
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Quote:
Originally Posted by dist1646 View Post
Don't do it!
If you want 6.5-06 performance, have it rebarreled to 6.5-06.
I have my version of a 6.5-06 it's called a 280. I have a Mauser in 8mm-06AI and .35-06 in my Whelen chambering to go along with my Garand.

It just seems that from 22-30cal is well represented except the .257
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Old February 14th, 2018, 11:49 PM #7
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I personally love the .257s. .250 Savage, .257 Roberts and (AI), and .25-06. All great cartridges.
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Old February 14th, 2018, 11:51 PM #8
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Oh, and .257 Weatherby Mag! I have a cousin who thinks that is the one rifle to have if you can have only one.
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Old February 15th, 2018, 01:18 AM #9
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Quote:
Originally Posted by CombatAK View Post
Oh, and .257 Weatherby Mag! I have a cousin who thinks that is the one rifle to have if you can have only one.
I picked the 25-06 because my absolute favorite the .222 wasn't deer legal. And I wanted to use for both deer and groundhog. Also the idea of having inexpensive, plentiful(1972) brass was appealing.

Weatherby almost got a sale when they introduced the payment plan but since I had to reload in order to afford to shoot the extra powder costs dissuaded me.
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Old February 15th, 2018, 07:39 AM #10
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Quote:
Originally Posted by Snav View Post
So the consensus is, a .001 oversize bullet will blow up the rifle.


BTW I did a modest scan of Ackleys book and didn't spot the aforementioned statement. I scanned all the Q&A twice but only did a cursory scan on the articles in the front. May have been in the data section.
No, but trying to shrink bullets that are .007" over is asking for trouble, especially if they are jacketed. Many of the 6.5 bullets being introduced now are made more for the 6.5cm, which is chambered specifically to allow those high BC bullets to be used. The 25-06 isn't.

I have had excellent accuracy at decently long ranges with my 25-06 using the wide variety of standard offerings in 257 and have taken game from groundhogs to mule deer with no issues at all. I don't consider it a 1k yd gun, though it can reach out that far, but it is quite accurate with reloads out to 500yds. It can be loaded with some pretty explosive varmint bullets or up to 120gr Nosler Partitions for heavier game.

My go to load is an all around cartridge that uses 100gr Nosler Ballistic Tips that will blow the snot out of a groundhog and drop a whitetail in it's tracks.

I cast my own bullets as well and I would size them .001" over after coating if I were to cast for the quarter bore, but I have never really found the need. I wouldn't try to shrink jacketed bullets that far, ever..

FWIW, I love the 25-06. I think it is one of the best single calibers all around for any game in the lower 48, without a doubt.

Oh, and I am building a 6.5 creedmoor gasser right now for a long range target rifle. Many of the newer 264 bullets with high BC's really aren't the best for hunting, but they will ring steel out to 1k yds!
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