I tried some RL25 in the 30-06.
With 180 grain bullets, it works quite well, but not so well with lighter 165 and 150 grain projectiles.
Ganderite is definitely right, as usual, in that it's to slow for most applications with the 30-06.
This is what I did to get an average of just over 2700fps in a 24 inch bbl.
First I established how far out I could load the flat base bullets, without forcing the ogive into the leade. There was lots of room in the mag well so that wasn't an issue.
The 180 grain bullets like to have at least a 1-12 twist rate and prefer a 1-10 twist for consistency.
When I established how deep I could seat the bullets, by seating in an empty case and pushing it into the chamber, with the bolt closed all the way. Then I marked appx where the base of the bullet would be.
I was lucky, there was very close to one caliber length of the base of the bullet being held in the neck and I was still about .010 off the leade. No issues with the mag well.
I filled the case slightly over the mark left inside the neck by the base of the bullet, with RL25 and dumped the powder into a pan on the digital scale.
My records show 57.0 grains fit well, but very slightly compressed. Perfect condition for slow powders. I also use CCI 250 magnum primers for everything.
This load was very accurate in that rifle. For full disclosure, it's not my rifle. The load was developed simply because the owner had come across two X 8lb kegs for around half the price at the local gunshop.
His wife likes to hunt for Moose, Bear and Deer locally and she's a bit recoil shy but not as big a wuss as I am. This is her rifle and she likes to reload her own cartridges for it.
She does a great job with her handloads, but like many handloaders doesn't have a clue about powder speeds and adapting them to your needs. She is strictly a by the book hand loader.
Of course, she couldn't find the load in any book and was immediately suspect.
She insisted that I shoot the rifle first and then closely inspected the case for signs of pressure. I then shot the last three cartridges and she again checked the cases. All was well, so she took the plunge and shot ONE ROUND. She loved the slightly reduced recoil and loved that there were five bullet holes at the one hundred yard target that she could cover with a Loonie.
The accuracy of that load was just blind luck. No other loads were tested and like she said, it isn't broken, so don't break it. It's now her only load and she's put dibs on the keg of powder. I have the other keg.
