Rumbler, thanks for the explanations of "WHY"

[mapper]

Generally let the rifle tell you what it likes.
As far as 308 loads for the 168's and 175's you are going to be shooting, those have been shot in hi power competition for years.
There are replications of federal gold medal match I think in a 308 loads at work titled thread.

4895,4064,reloder 15, and varget would all be choices for those, and probally 4166 as well.

The interesting part is in a 223 and the choices relating to bullet weight.
The heavy bullets I would try with the slower powders
The lighter ones with the faster ones.
Say 45-77 gr spread.
Light ones probally 4198,335,
Mid weight benchmark, blc-2,tac
Heavy weight varget.4064,cfe 223 or something in that speed.



I'm still learning..case volumes and powders in things very close to what I'm playing with.
This is worth looking at.
https://forum.capitalcitygunforum.co...-case-capacity

I have that mongoose and mongoose load data as well as 6x45 data to pull from.

Worthwhile read on primer, both cup thickness, pressure and brisance( hotness/flash) as well as diffrences between a commercial and military primer.
https://forum.capitalcitygunforum.co...-Primers-Right