Discrepency in Lee OAL for 22-250


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KFDiesel
November 23, 2008, 10:56 AM
On my Lee paper that came with reloading dies it says MAXIMUM OAL should be 2.35 in. But when you look at the load data it has MINIMUM OAL as 2.40 in. for my particular load. What gives?

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rcmodel
November 23, 2008, 11:10 AM
Who knows?

SAAMI Max OAL for the 22-250 is 2.350".

But which bullet you are loading makes a huge difference.
It can range from 2.235" for 40 grain, up to 2.350" with bullets up to 60 grain, on up to 2.390", & 2.490" with 68 & 75 grain.

It all depends on the bullet.
If it says MINIMUM OAL as 2.40", then that particular bullet ogive would likely be down inside the case neck at 2.350".

You really need to get a reloading manual specific to the brand bullets you are using for correct information.

Lee info tends to be pretty generic!

rcmodel

MMCSRET
November 23, 2008, 01:17 PM
Let your rifle decide. Load them to fit in the magazine and chamber. The longer the better, just off the lands and 1 calibre deep for neck tension.

KFDiesel
November 24, 2008, 06:48 PM
I don't know what that means but I will learn and try it. Thank you.
Kirk

KFDiesel
November 24, 2008, 06:53 PM
I have a Lee Classic Turret press.

ants
November 24, 2008, 07:29 PM
Hey, KFDiesel. The maximum length of a particular cartridge is established by international standard, and the institute called SAAMI (Small Arms and Ammunition Manufacturer's Institute) keeps the standards. That way gun and ammo manufacturers are on the same page when they make their products. That's what the maximum is all about.

The minimum in your load data is established by the lab that loaded and shot the test loads listed on your particular data sheet, and are specific to the particular loads listed on that sheet. If you load a bullet shorter (which reduces the available volume inside the case) it leads to more pressure. So you don't want to go shorter than the minimum length listed on your data sheet, but you can go longer (as long as it fits in the magazine). If you pick up another data table, be sure to pay attention to the minimum length for that data table. You can always go longer than the minimum, never shorter.

Go get a real book and read all about it. It's really pretty cool, and you'll learn a lot. ABC's of Reloading, Speer, Hornady, Lee, Lyman and Sierra all are excellent books. They aren't expensive, and you really need the information.

KFDiesel
November 27, 2008, 12:27 PM
OK. I get the logic on the pressure in the case. I have the ABC's. I'll get the Sierra and the Hornady I think. Thank you.
Kirk

ranger335v
November 27, 2008, 07:37 PM
"On my Lee paper that came with reloading dies it says MAXIMUM OAL should be 2.35 in. But when you look at the load data it has MINIMUM OAL as 2.40 in. for my particular load. "

Kinda kills your faith in the book OAL figures, don't it? :banghead:

NCsmitty
November 27, 2008, 08:28 PM
That's the very reason that you do not rely on a single bit of data to make an informed decision on issues like that. You need to cross reference several sources to make that decision. As has been stated, different weights and styles will require different COL's, with one of the keys being the magazine length and fit.

NCsmitty

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