Thread: 3 vs 5 shot groups

Originally Posted by Micky Duck

RUMPY bought new rifle...I did up 4 diferent lots of reloads for it..plus he had some factory

Would you have ended up with the same 4 loads using 3 shot groups? Removing them in the reverse order of fire (not just excluding the worst 2)?

Originally Posted by ebf

10 shot groups are where it is at for REPEATABLE, consistent results

I completely agree. If I’m proving a load, testing a process, comparing loads/bullets I use 10. However for load development this would be completely impractical.

Originally Posted by Magnetite

I completely agree. If I’m proving a load, testing a process, comparing loads/bullets I use 10. However for load development this would be completely impractical.

That is why when I do initial load development, I focus on techniques that minimize shooter variability. I trust a Magnetospeed or Labradar enough to fire smaller sample sizes to identify nodes.

Once I get past that point, and want to look at seating depth or other variables, I tend to fire larger number of shots per group, or preferably, multiple groups over multiple days to mitigate that.

But then again the variability may be because of poor charge weights...

And the hamster keeps going round and round

Originally Posted by ebf

That is why when I do initial load development, I focus on techniques that minimize shooter variability. I trust a Magnetospeed or Labradar enough to fire smaller sample sizes to identify nodes.

Once I get past that point, and want to look at seating depth or other variables, I tend to fire larger number of shots per group, or preferably, multiple groups over multiple days to mitigate that.

But then again the variability may be because of poor charge weights...

And the hamster keeps going round and round

BINGO - Thats the way to do it. ...