300 winnie.......
Remember an age old saying that is very true
Kiss the lands
Find pressure
Rock on
Most get lost on the rock on part
Measuring to the lands is an issue - Hornady Comparitor or Davidson Ogive gauges are used to measure ogive lengths vs OAL off the tip
Finding the pressure simple
Rock on....make adjustments
many loads per bullet, powder, and load can be accomplished in 30 rounds max
Work with one powder and bullet at a time, then move on. Be methodical, work up to find pressure. Then back off, work up carefully.
Do not use mixed brands of brass, stick with a single primer, then change once you have tweeked the powder charge, then work on seating depth.
Amazing accuracy is attainable from stock factory guns, chase the lands as leade grows, keep the copper out of your barrel