Good morning forum,
I am having trouble developing loads for my 25-06 B78 Octagon Barrel, and would appreciate any advice,

Here are some facts,
- Job on the trigger by gunsmith, breaks clean & crisp.
- Job on forend, used to touch barrel, now it's floated.
Currently  I am reloading,
- Neck Sizing just touching case shoulder, no feeding or extraction issues that I can see.
- 110 gr Nosler Accubonds,
- 53.5 gr of RL22
- Winchester Brass - now onto 4th reload
- Federal 210 primer.
- COAL 3.231""
- Jump to lands 0.015"
- AVG Muzzle speed - 2,940 fps
- New Leupold VXII 3.5x10 nice and tight. 
Group size averages 1.5" @ 1oo yd.
Some might say this loads are rather slow, however as soon as I arrived at 54 gr I started seeing flattened and blown primers with federal brass.
I really hope I can get more accuracy and speed out of this 110 accubonds, I wonder if the bullets need to be pushed back a bit to relieve some possible initial pressure.
Any advice will be most welcome as I would like to use this come next whitetail season.

Thanks a mill,

Thanks a mill for your response,

The barrel is 26" and twist is 1:10

The cronograph seems to be ok, 120 gr Remington factory ammo averages 2930 fps.
I cant seem to get more than 2950 fps from 110 gr Accubonds with RL22 without getting into primer issues.
I wonder given the 26" barrel length perhaps I should try a slower powder such as IMR7828 ?
Thanks again for your input.

Many Thanks Premod70

I am quite thorough cleaning cases and primer pockets, I do clean cases once finished, chamber is also clean.
Started reloading Federal Brass, now using Winchester, however primers look somewhat flat.

Small world, I used to live in Raleigh, Wonderful Times !!

  Curious about the comment that this load of RL22  is " not a very hot load"? From the data I see in my loading manuals it's up there near maximum loads for the bullet and powder. I agree it shouldn't see excess pressure signs, but it's not a mid range charge from what I see.
The velocities you're getting are correct for the data I see, but still near maximum loads, so maybe you need to either switch to another powder, or back off on the charge one grain. I personally don't load my varmint or hunting rifles for maximum speed, but rather for maximum accuracy. Once I've reached the most accurate group size, I stop there, regardless if it's as hot as I'd like to go.
I've played with free floating barrels, and on occasion had to put the pressure point back in the end of a forearm, as I lost accuracy as a barrel warmed up. This is especially true on lighter weight barrels, as they tend to vertically string shots as they warm up if the pressure point is removed. Sometimes the factory is right in putting that pressure point in the forearm.

Keep yer RL22 and use it when you rebarrel that thing to .280 Rem. It's a far nicer, more versatile round and mine has always done real well with that powder. Never even held a can of 7828 in my paw. 
Two .25-06 rifles I have experience with were testy at the upper range of loading and neither was worth a pinch or s#$^% in the wind. When kept down to about .257 Roberts loads they were pretty good, so why not just stick to that round for .25 cal.? Just my opinion, of course.

Mac, how about a picture of a flattened primer from this load. If in this predicament I would change components starting with a fresh box of Norma brass, the two brands of brass you are using can be suspect compared to Norma.

I am 74 and been reloading since I was 19. I think the problem you have is from the initial reduce 10% and work upl I had a gun in 25-06 and so did my buddy. Different make of rifles. Mine was not shooting good one day at the range and I asked him for three rounds to test his load in my gun. His gun shot this load with no problem and when I put it in my gun we had to beat the bolt open. Apparently my gun had a much tighter chamber and would not handle that load. Chamber reamers have a maximum and minimum size. His rifle had a larger chamber and mine was smaller and created more pressure with the load that would shoot good in his rifle. My 2cents worth.

I have a CPA with a  25 Kraig barrel. With 117 G Sierras and a 10x Unertl  not pushed real fast its about a 1 1/2 MOA rifle. Sometimes a bit better not much. Too fast it opens up. .25 Kraig has about the same potential as a 25/06, little less case capacity which most would say is an advantage. 

Sporter stocked factory barreled  rifle I would not expect better. Go to a flat forearm and straight stock bost  the scope to 20 power may get another 1/4 MOA out of the Browning. 

Having said all that if looking for improvement I would go to a Sierra 117 Match King. Switching bullets likely to have the greatest effect.

Boats.