Switching lots in bullets and powder

[Sogan]

Developed a load and will be running out of bullets first followed by the powder for the lots that were used. What do I need to do to get it back?

-Worry about matching the velocity?
-Seat it to the same depth? Or the same jump anyways?
-Do a mini load development just .1 grain higher and lower than the current load? And then do another seating test?

 

[spife7980]

I go .1 and .2 higher and lower, just to cast a wider net and make more complete decisions. Look at the velocities to see that it’s a minor change and you aren’t 100 fps slower or faster than expected. Then do a seating depth if the results aren’t what you’re after.

 

[High Desert duck]

I run them at the same jump as the last lot. Run a mini ladder with the new powder and find what I need to match speed. Once I have that I load up 5-10 run for group and SD.

Usually works out to about the same as the last lot/load.

 

[Steel head]

I just load 25 of them.
If they still shoot I get to do nothing

 

[918v]

Depends on how different the lots are and how close you are to the lands. I’m not convinced that matching velocity will automatically restore accuracy. Hasn’t worked for me yet.

 

[Sogan]

Obviously the ideal choice is to buy enough to wear the barrel out. Building a gun during Covid times hasn’t really allowed that to happen yet. Bought some 8208 and 75 ELD-m. They seem to be working well but starting development over gain once I actually can buy some bulk doesn’t sound super fun. Rather just shoot.

 

[spife7980]

I doubt you notice much change at all in results with that combo. It’s what I shoot nyself, I will put a million dollar bet on it settling in nicely in the 23.6-23.8 range.

 

[Deleted member 10043]

Quality components will result in immaterial differences.