Thread: Concentricity

@andyanimal31 your 10 thou runout - was that on the neck or the projectile ogive ?

VC, when you say use dies correctly to minimise eccentricity can you explain some more pls

Originally Posted by ebf

@andyanimal31 your 10 thou runout - was that on the neck or the projectile ogive ?

VC, when you say use dies correctly to minimise eccentricity can you explain some more pls

Well in the case of a neck die not trying to size the neck too far down and in the case of a full length just ensuring the decapping rod/expander is not bent and the inside of neck is well cleaned and lubed, and the outside of case is only lightly lubed.

And that the seater is set at the correct height, particularly in the case of a seat and crimp die.

Originally Posted by ebf

@andyanimal31 your 10 thou runout - was that on the neck or the projectile ogive ?

VC, when you say use dies correctly to minimise eccentricity can you explain some more pls

I just measure between the olgive and the neck with the hornady gauge.
I occasionally check now but usually 0 to 3 thou run out on my 6.5 using bushing neck dies which is close enough for me.
The one thing i have found with reloading is the more you know the less you know!

Originally Posted by andyanimal31

The one thing i have found with reloading is the more you know the less you know!

Yup +100

Had a fascinating conversation with one of the top f-open shooters in the country yesterday. His other hobby is benchrest... These guys are loading for 5 shots thru one hole type accuracy. The chamber tolerances are bit tighter than your average factory hunting rifle.

During NRA nationals this year we had the Ausie f teams over, and they were awesome with info sharing. The level of reloading for competition is closer to benchrest. But the results are there, they shoot perfect water lines at massive distances, so the only thing you are fighting is wind.

Originally Posted by andyanimal31

The one thing i have found with reloading is the more you know the less you know!

If I read you right, I think you mean :

"The more you know, the more you realise just how little you know"