Separate topic on the Woodleighs: I tried their 6.5mm Protected Point in my 1903. For a spitzer bullet, they fed well, but I was having serious over-pressure issues that I haven't figured out.
Don, if you're going to get a cast of your chamber I would still do a bore slug check as well, even though the casting should verify 99% of the issues!
On a second note what is your particular load? I have an issue with a 7x64mm, my first rifle in that calibre initial brass was a lot lighter than the Norma brass I have now for my 'newer' rifle so I've had to dial it back quite a bit! Check your brass, if there is a fair variation then this could also be an issue - always try & have one brand of brass for a particular rifle, any new cases...check them against the originals before loading your standard load!