first of all i would like to say this forum is awesome and i'm really enjoying all of the info i can suck up on here. thank you to all of the contributing members
first some data
i've been shooting a remington 700 pss in .300 rum and i've started to reload for it with some 180 grain swift sciroccos that came with the gun, and now that i've found a ton more info i want to do it properly. the rifle has a very low round count, approximately 175 down the tube.
i bought a hornady OAL guage, and spent some time fiddling with the thing until i could get consistent reading within .003"
i used this with a hornady bullet comparator to determine a base to "ogive" max length of 3.084"
hornady recommends starting at about .040" off the lands up to .020" off the lands.
so with some spiffy math i figure i should be seating these bullets to 3.044" (.040 off) and working my way from there
i then took some reloads from a few weeks before i read this great seating depth info and they were seated base to bullet tip at 3.600" and measured the base to "ogive" length to determine the length at 2.928" average
so i took some remington factory ammo with the same swift bullet which measures about 3.570" average from base to bullet tip, and measured it out at 2.900" from base to "ogive"
so if this is all acurate (after many measurements) i'm showing my base to "ogive" length at 3.044" (3.084"-.040") compared to factory at 2.900" giving me a difference of .114" seating depth from factory to what i "should" start at according to hornady instructions
is this right? i know factory ammo has to be made to fit all firearms, and therefore has all kind of room to play for different rifles, i just wanted to make sure this isn't way out of wack.
i'm new to this bullet seating depth measurement stuff so i figured i would run it by some professionals.
so does this measurement seem normal?
Thanks again guys!