Thought provokng video on chamber to bore runout...reactions?

If the pilot isn't there to follow the bore and keep it in alignment, then what is it there for, IYO?
If the reamers will follow the bore and keep in alignment, why is that a problem?
 
Rflshootr said:
If the pilot isn't there to follow the bore and keep it in alignment, then what is it there for, IYO?
If the reamers will follow the bore and keep in alignment, why is that a problem?
Click to expand...

It's "designed to follow the bore"...... this is(was) it's original intent BUT, it's primary useful function in the real world is to virtually eliminate chatter.

Bores are crooked.....

Bores are CROOKED.......

BORES ARE CROOKED!!!

NOT straight.

So, if you set up between centers, no matter how careful you are to find, measure and eliminate the lapping bell and THE BORE IS CROOKED, the chamber gets wallowed. And of course it gets wallowed differently every new barrel.

I've had up to 5 barrels made by the same guy, with the same reamer to essentially the same headspace AND THE ROUNDS DON'T INTERCHANGE.

SAME reamer

SAME gunsmith

SAME headspace

And no joy in Muddville

Because HEADSPACE isn't even half the battle. I Can Deal With Headspace, I CANNOT deal with different sized and differently tapered chambers.

IME the single most important thing,

THE SINGLE MOST IMPORTANT thing in achieving and maintaining consistent accuracy over time is the fit betwixt your sizing die and your barrel(s)

To do this you absolutely MUST be able to make chamber after chamber identically.

This is specifically why I bought a lathe and started doing my own work. I own 7 different 6BR chambers and have 5 different dies and STILL some of them are not matched. Thousands of dollars spent on crap.

Barrels that CANNOT shoot to potential lest I spend another 350.00 and get ANOTHER useless resizer.

I now have zero problems getting chambers identical, brand to brand, action to action, gun to gun.......because I DO NOT use the pilot bushing to steer the reamer down the rabbithole....
 
I've had up to 5 barrels made by the same guy, with the same reamer to essentially the same headspace AND THE ROUNDS DON'T INTERCHANGE.

SAME reamer

SAME gunsmith

SAME headspace

And no joy in Muddville


Kinda sounds like some other type of problem was going on there, but whatever works for you I guess.
 
alinwa said:
I've had up to 5 barrels made by the same guy, with the same reamer to essentially the same headspace AND THE ROUNDS DON'T INTERCHANGE.

SAME reamer

SAME gunsmith

SAME headspace

And no joy in Muddville

Because HEADSPACE isn't even half the battle. I Can Deal With Headspace, I CANNOT deal with different sized and differently tapered chambers.



This is specifically why I bought a lathe and started doing my own work. I own 7 different 6BR chambers and have 5 different dies and STILL some of them are not matched. Thousands of dollars spent on crap.



I now have zero problems getting chambers identical, brand to brand, action to action, gun to gun.......because I DO NOT use the pilot bushing to steer the reamer down the rabbithole....
Click to expand...
Al, I have over 30 barrels same reamer and I use pilot and all brass interchanges this is a ppc which really makes no difference if brass can not be interchanged using same reamer there is something real wrong
 
rflshootr and gfpd,

you'se guys are completely right :)

As long as you're both happy with what you've got then there's nothing to change......
 
Smile

alinwa said:
rflshootr and gfpd,

you'se guys are completely right :)

As long as you're both happy with what you've got then there's nothing to change......
Click to expand...

I needed a good laugh this morning and al you never seem to disappoint. Love reading your posts
 
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