Well, I am not sure what to do next? I'll start off with all the details of the load & rifle.
24 1/2" (cut down from 26" originally) #2 contour Ted Gaillard barrel chambered in 264 Win Mag. Chamber is throated long for a COL of 3.495 with a 140gr Accubond. I seat the bullet so my COL is 3.480.
Barrel is fitted to a Sako AV action that has been trued & trigger set to 2 1/2 lbs. Barreled action is bedded to a Brown Precision stock. A 4.5x14x40mm LR Leupold B&C reticule. Scope is mounted with Talley high rings & mounts (high mounts fit me much better than low mounts).
The load is as follows.
215F match primer
140gr Nosler Accubond
72gr H870 (down from 74gr as I was getting pressure signs & extraction issues with new brass)
Now I was having problems at 74gr as described above, so I dropped down to 72gr. Now new brass seems to work fine at 72gr, no extraction issues, also the fired new case will go back into the chamber no problem.
My once fired brass (out of this rifle) is a different story. I first thought it was a trim issue because my first 20 rounds I didn't trim & was over the 2.500. It was not by much though, 2.509.
The next 20 once fired rounds were trimmed back to 2.486. Today's field test came up with the same thing, a little tug after the bolt is lifted to extract the shell. I am getting light scratching above the belt on the once fired rounds?
Funny thing is the measurements on the new brass & once fired seem to be the same above the belt. .513 above belt & .493 at the shoulder.
Normally I neck size cases, but I decided to F/L size these. Reason being when I was working up a load for the rifle, I wasn't as good at keeping brass separate as I should have been. I knew some of the loads were a bit warm. Now most of the warm loads brass was pitched, but rather than pitch the rest I figured a F/L sizing would get me back in check for the most part.
Now if it was the odd once fired round that was sticking, I'd write that off to a hot load case that got mixed in the batch of brass, but it seems I am getting sticky extraction each load with the once fired brass.
Would my load still be too hot? I am 2gr less than max in the Nosler manual, 6.3gr from max in the old Hornady manual, 4gr from max in the old Speer manual & 1gr from max in the Hodgdon manual.
With my load I am right around the 3100 FPS range according to my chrony. I checked my balance beam scale to verify it was correct with another one I have & found it to be good.
I am hoping I have over looked something & don't have to drop my charge anymore. Does anyone have an idea out there?