Unless you know the velocities, then you are wasting time.

Once you know the bullets are coming out of the barrels at the same velocity, then you can look at other factors.

So get or borrow a chrony and re shoot the loads.

And load some up with different primer / powder combo's
- you only need 4 per type - and see which shoot best
out of all of them.

You can get a hell of a lot done in one day with a chrony
and the loads.

The important thing is you can rule out some loads straight away so you spend more time on good loads.