Importantly, go to your nearest gun shops and ask what they stock and what they regularly have in.
this is the most important or you will find yourself starting all over again!
on the whole the .222 is idiot proof to load for, I have had three now and only the last one required any thought!
Bullets
You are most likely shooting a 1:14" twist so bullet length is to be considered
I shoot 40-60gr but they are now ALL flat base bullets (not boat tailed), Keep it simple
VMax you mention - go for 40 or 50gr (my preference is on energy not velocity so 50's)
The 50's are short enough to be stable in pretty much any 1:14" barrel
Alternatives for vermin are Sierra Blitzking which I now use in 40gr,
Brass
get some decent stuff first off,
once fired is fine but as you are starting I would suggest a nice box of new Remington, Federal or if you can find it Norma
dont be starting with someone else's PPU brass
Primers
standard small rifle in whatever you can find
I am now using small rifle magnum primers because I happened to have 500 and couldn't get the CCI SR primers I was previously using!!
Federal, Remington or CCI are all decent
Powder
I bought 1kg of N133 when I first bought a .222 and still have about a 1/3 of it!
VV - N130, N133
RL7
H322, 335
IMR 4198
any of those will work:
Basic Manual Download
.222 Remington - Rifle reloading - Reloading Data - Vihtavuori
As to how to go about the load process
choose your brass and primer from available sources (run all new brass through a FL sizer, don't undersize the case, that's a different essay!)
Choose a powder appropriate for your calibre/cartridge and bullet weight (IMO go for the slower burn rate powders that will get the job done, the data will show you which, e.g. VV data N130 is faster bruning than N133 which is faster than N135 etc etc)
look at the data and see the range for the charge levels for that powder and bullet combo
likely to be less than 2gr in .222 with N133 and 50gr (or any other for that matter
[TABLE="class: reload_data, width: 100%"]
[TR]
[TD="class: reload_maintitle, colspan: 6"]Bullet[/TD]
[TD="class: reload_maintitle"]Powder[/TD]
[TD="class: reload_maintitle, colspan: 4"]Starting load[/TD]
[TD="class: reload_maintitle reload_grey, bgcolor: #DCDEDD, colspan: 4"]Maximum load[/TD]
[/TR]
[TR]
[TD="class: reload_title, colspan: 2"]Weight[/TD]
[TD="class: reload_title"]Type[/TD]
[TD="class: reload_title"]Mfg[/TD]
[TD="class: reload_title, colspan: 2"]C.O.L[/TD]
[TD="class: reload_title"]Type[/TD]
[TD="class: reload_title, colspan: 2"]Weight[/TD]
[TD="class: reload_title, colspan: 2"]Velocity[/TD]
[TD="class: reload_title reload_grey, bgcolor: #DCDEDD, colspan: 2"]Weight[/TD]
[TD="class: reload_title reload_grey, bgcolor: #DCDEDD, colspan: 2"]Velocity[/TD]
[/TR]
[/TABLE]
[TABLE="class: reload_data, width: 100%"]
[TR]
[TD]3,2[/TD]
[TD]50[/TD]
[TD]SPSX[/TD]
[TD]Hornady[/TD]
[TD]
53,0[/TD]
[TD]
2.087[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"][/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"][/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"][/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"][/TD]
[/TR]
[TR]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD]N130[/TD]
[TD]1,30[/TD]
[TD]20.1[/TD]
[TD]912[/TD]
[TD]2992[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]1,39[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]21.5[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]986[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]3235[/TD]
[/TR]
[TR]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD] [/TD]
[TD]N133[/TD]
[TD]1,38[/TD]
[TD]21.3[/TD]
[TD]908[/TD]
[TD]2979[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]1,49[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]23.0[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]979[/TD]
[TD="class: reload_grey, bgcolor: #DCDEDD"]3212[/TD]
[/TR]
[/TABLE]
So N133 with 50gr is 21.3gr start and 23,0 max
no way you are getting 23gr in without a compressed load and I will put money on the fact that you will see accuracy nodes (indications) well below max
If I was doing it I would go for:
1x21.3gr
1x21.5gr
1x21.7gr
1x21.9gr
3x 22.0gr
3x22.2gr
3x22.4gr
3x22.6gr
3x22.8gr
3x23.0gr
1x23.2gr
Seat the bullet to FACTORY or Book OAL or AT LEAST ONE FULL CALIBRE DEPTH
the singles above are pressure testing rounds for safety not accuracy, you are wasting ammo testing for accuracy at starting load levels and no-one buys a .222 to shoot 50gr at 2850fps!!
case, primer and bullet combinations can all add up to range from moderate to dangerous so work through them and check cases and primers for marks and pressure signs as well as checking bolt lift and percussion noise differences. lots of things here,
you WILL see changes in group size from three shots
you can shoot five if you want, but I see no reason is wasting a box of bullets to shave 1/16" of a group on a given day
once you see the best group size, choose that charge level and you can then tweak either side of the charge level keeping OAL the same
or
just skip to tweaking the OAL
would be nice to know where you limit is here so before you go any further load a dummy round with a fired case with the neck squeezed to just hold a bullet and chamber it. As you do it will hit the rifling and push back into the case indicating max OAL
remove and measure at least 10 times to get an average for MAX OAL in your rifle
53mm is book
try
3x 52.6
3x52.8
3x53.2 (you already did 53mm remember)
3x53.4
etc etc until you reach just under your MAX OAL
My bet is you end you end up with a sub MOA round pushing moderate velocities (3-3100fps with 50gr) with a near as dammit book OAL....that's how easy the .222 is to get shooting well