Thread: First time reloading 270win

Originally Posted by Sidetrack

Did notice that chamber is tighter than the previous one so does that mean pressures are likely to be higher? The donor rifle hadn’t had more than 20 rounds through it. Maybe I’ll start at 52gns and move up in .3s which seems to be accepted practice.
Overly conscious of component waste so was going to start with groups of three then test with five if something looked promising or am I deluding myself and it’s a waste in the long run? And yes, the OCD is kicking in hard!!!

right..FWIW here is my advice..... start at your lower weight.... manual has 53.5grns of winchester 760 for 3000 as maximum
51----54.3 of AR 2209
so I WOULD drop that to maybe 50grns,load two rounds and another 2 at 50.5 2 at 51 2 at 51.5 2 at 52 2 at 52.5 2 at 53

seat them using a factory round in seating die to give depth.... and go shoot them to check for pressure....and while doing so take note of what pokes the 2 closest together..2 rather than 3 cause Im a cheap hua and components arent cheap any more. THESE 10 ROUNDS HAVE YOUR POWDER LEVEL SORTED...
when you get pressure signs DO NOT try any hotter loads,drop back to load before the hot one .PULL ANY LEFT OVER ROUNDS and load up say 6 rounds at your one level below pressure level and do two x 3 shot groups at that...if you under inch...go hunting.... and write that load data on wall with a vivid and stick to it.....
your once fired brass...... when you resize it..do not screw sizing die right in hard,back it off a full turn and see if it will easily chamber,if not,screw in another 1/4 turn untill it will...then set lock ring and leave it at that...what this does is partial length resize EG only move brass back a little bit at shoulder and will resize MOST but not all of the neck...will/should make brass last longer as getting moved around less.
once you have powder level sorted then MAYBE tweak seating depth..to be completely honest here,if it fits in magazine and chambers fine I leave it alone and dont touch it..from memory 99% of my .270 loads are 1mm shorter than the magazine box.