somebody correct me if i'm wrong please. the 06, in 25-06, comes from 30-06. a 25-06 is based from the 30-06, necked down a litt

[Reid Jones]

somebody correct me if i'm wrong please. the 06, in 25-06, comes from 30-06. a 25-06 is based from the 30-06, necked down a little bit. and of course the 06 in 30-06 is from the year the bullet was introduced into the US army as stated in another post. am i correct? i've been trying to figure it out and somebody has told me that they think that is why it's called a 25-06

[shane]

Correct.

Another example is .338-06. It's a .30-06 necked up to .338 bullets. It's also awesome.

Similarly, the 7mm-08 is a .308 Win. necked down to 7mm bullets.

[Reid Jones]

thanks.

[Del in KS]

The 06 refers to 1906 the year the 30-06 came out If memory serves. The 30 and the 25 refer to the caliber of the bore between the lands. The 25-06 is simply the 30-06 case necked down to 25 caliber. Bullet diameter is .308 and .257 respectively.

[DakotaMan]

You are exactly right Reid. As others have said, it is a 30-06 with the neck squeezed down to hold a .25 caliber bullet. If you get one, you can make your own cases from readily available 30-06 or .270 brass. You just put the 30-06 or .270 brass in your 25-06 full length sizer die and presto... 25-06. You will have to trim the case to correct length because it will be a hair too long but I reload all the time and have rarely had to by brass. I pick up .270 and 30-06 all the time for this.

[jbird]

You are correct. Can't add anything that wasn't explained above.

[Quackhead6]

You are correct. The 25/ is a 30/06 just necked down to .25 Cal. instead of the .30 Cal. of the 30/06.

[bonnier-admin_2]

I make all my 25-06 out of 270 and 30-06 Military Match cases.

Also 338 Win Mag out of 7mm Rem Mag and 300 Win Mag.

No fire forming necessary!

[hunt_fish_sleep]

You are correct.

[ishawooa]

For this very reason I have always wished the US had adopted the metric system as in 7 x 57, 7.62 x 63 etc. This method tells you exactly what you are looking at including if the case is rimmed or not. On the other hand names such as .280 Rem, .270 Win, .25-06, and even the English .404 Jeffrey don't truly indicate what you are dealing with.

[kyle7735]

25 06 is an o6 cartrige necked down to a 25 caliber

[rudyglove27]

Agreed with Del in KS answer above and A + 1 for you sir!!!