.308 OAL Question for workup

I was working in my workup for the range this weekend and I came across something I haven't come across yet in the 1 and a half years I've been reloading.

Gun I'm using is a Savage Axis .308. I'm loading Sierra MK 155gr Palma.

I used my Hornady OAL gauge and came up with a ogive measurement of 2.289 which barely put the bullet in the case. From what I read, you should have at least the bullet width in the case, in this case it should be .308. At the measurement to ogive of 2.289, there was not .308 left in the case, once I moved the measurement to ogive back to like 2.250, then there was .310 of the bullet in the case.

After coloring the top of a bullet I finally settled on a OAL of 2.900 with an ogive measurement of 2.241 which as you can see from above, is quite a bit away from the lands. I ran the dummy round I made that had the bullet colored and everything ran through fine, no lands marks on the bullet. Even for the magazine just fine with plenty of room to spare. Plus with an OAL of 2.900, there's just over .308 in the neck.

Well I got to looking in the Sierra manual, and they have a OAL for this bullet of 2.775.

I've never had an OAL this much over a book published OAL.

Should I recheck my measurements even though everything ran through fine, and none of the marker got scratched off from the lands? Can I move it out longer or should I keep at least .308 in the case like I've read?

I'm thinking that this rifle just has a generous throat between where the shoulders catch and where the lands are.

Thoughts?

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