25-06 AI Load help

[blackfoot95]

First off I'd like to thank all of you for your insights, advice, and sharing of experiences. Big shout out to Phil Rizzo for the suggestion to move to a magnum primer.
I loadedsome stuff with fed215 primers starting at 55.5 gr and stepping up in .2 gr increments to 56.1 gr as I didn't want to swing too hard based on my previous issues. The first 3 groups were all ~3120-3140 range 2 shots close to the other and 1 flier. Last group was right at 3150 @ ~ 1". I feel like there's quite a bit more on the table but as a few have pointed out 3150 is what's expected on the increase from rem to ackley and this isn't my main rifle so I'm going to call it good for now and move on to the 280 Ai and 7mm PRC.
Should i expect similar issues with the 280 or is it more forgiving since it isn't as overbore? Fed 210 or 215 primers?

 

[AussieWriter]

Last point, I use Win 760 in my .25/06. All the other choices except H4831 are solid achievers.
With the 280A1, I find it as easy as loading for a .30/06. In fact, you can expect the same/similar velocites for equal bullet weights and barrel lengths.

 

[Phil Rizzo]

First off I'd like to thank all of you for your insights, advice, and sharing of experiences. Big shout out to Phil Rizzo for the suggestion to move to a magnum primer.
I loadedsome stuff with fed215 primers starting at 55.5 gr and stepping up in .2 gr increments to 56.1 gr as I didn't want to swing too hard based on my previous issues. The first 3 groups were all ~3120-3140 range 2 shots close to the other and 1 flier. Last group was right at 3150 @ ~ 1". I feel like there's quite a bit more on the table but as a few have pointed out 3150 is what's expected on the increase from rem to ackley and this isn't my main rifle so I'm going to call it good for now and move on to the 280 Ai and 7mm PRC.
Should i expect similar issues with the 280 or is it more forgiving since it isn't as overbore? Fed 210 or 215 primers?

Your welcome.
I have no experience with 280AI but plenty here do.
Its a famous over achiever.

 

[436]

One of the older Sierra books had it included.
3 ring binder

FYI
Possible one of these? I'm pretty sure I have all of Sierra's manuals. Can you think of which one it was? Cheers

 

[MagnumManiac]

Flattened primers are pretty standard in all of my Ackley chambers.

I don't get them until I'm in 70,000psi territory or higher…tested with a Pressure Trace II.

Cheers.

 

[Phil Rizzo]

FYI
Possible one of these? I'm pretty sure I have all of Sierra's manuals. Can you think of which one it was? Cheers

I don't recall the cover, I'd say the book was 20+ yrs old by now.

 

[436]

I don't recall the cover, I'd say the book was 20+ yrs old by now.

Ok, then I'd think it had to be this one. Cheers

 

[Justice1327]

1 min on google. Maybe not for that exact bullet or powder that you requested in the original post should get you started.

 

[Phil Rizzo]

The max loads for a standard 25/06 plus about 4% should be a safe starting place for any powder in the AI.
So many good selections exist now that aren't in an ancient manual.

 

[Phil Rizzo]

Thank You Justice 1327.

 

[Phil Rizzo]

First off I'd like to thank all of you for your insights, advice, and sharing of experiences. Big shout out to Phil Rizzo for the suggestion to move to a magnum primer.
I loadedsome stuff with fed215 primers starting at 55.5 gr and stepping up in .2 gr increments to 56.1 gr as I didn't want to swing too hard based on my previous issues. The first 3 groups were all ~3120-3140 range 2 shots close to the other and 1 flier. Last group was right at 3150 @ ~ 1". I feel like there's quite a bit more on the table but as a few have pointed out 3150 is what's expected on the increase from rem to ackley and this isn't my main rifle so I'm going to call it good for now and move on to the 280 Ai and 7mm PRC.
Should i expect similar issues with the 280 or is it more forgiving since it isn't as overbore? Fed 210 or 215 primers?

There should be loads of data available for the 280AI, since it became SAAMI-fied some years back.