Seating depth and chamber depth question, Savage 10TR, Hornady 165 grain SST

[schiffer99]

Recently picked up a Savage 10TR on impulse. This weekend I was getting ready to load up some rounds so I did a rough estimate on measuring the chamber for bullet seating depth (put cleaning rod down barrel from muzzle on a closed bolt, marked it, then rod down again but on a round that was barely seated in brass and pushed forward until I felt some resistance, marked it).

Measurement came to 2.78, which seems short to me. Is this something I shoudl be concerned about? Bullet is a 165 grain Hornady SST, brass is winchester that was full length resized in a Lee die. I loaded up one at 2.75 OAL, and I still feel like I"m getting an ever so slight resistance when chambering... should I be concered about that?

 

[KYbulldog]

Not tried the homemade deal but i picked up a Hornady Lock n Load Curved OAL guage. Works like a charm when used with Calibre specific hornady modified case. I'm getting COAL of 2.835 on my AR10 match rock5r in .308. A buddy was getting 2.95 in his spec Rem700 with a 5r. Supposedly back of the measurement .011-.020 and your in zen oal. Fixin to head out with some custom lengthed cartridges soon to see if that tightens the groups.
Amazon.com: Hornady Lock N Load Overall Length Gauge (Curved): Sports & Outdoors
Amazon.com: Hornady Lock N Load .308 Winchester Modified Case: Sports & Outdoors

Of course those measurement will be bullet specific. Need to measure for each bullet type/weight.