Case Oil

[Simon_S]

I love my Lee 38 carbide die. should make 308win carbide die

[1066]

I love my Lee 38 carbide die. should make 308win carbide die

Ahh! If only the .308 win was a straight walled case.

[Simon_S]

Don't no why that cannot make a bottle necked carbide die. Would think with all the tech could be done

[tacfoley]

Don't no why that cannot make a bottle necked carbide die. Would think with all the tech could be done

Let's see how you do it then....

The so-called straight case is actually very slightly tapered, and the carbide sizing die - also tapered inside - acts like a circular scraper, cleaning all the crud off as it takes in the case and reduces it to the factory size at the same time..

The neck of the die actually ends up near the head of the case. Show me how you can do that with a bottle-necked case and I'll be the first in line to buy it when you've made it.

tac

[MikB]

Don't no why that cannot make a bottle necked carbide die. Would think with all the tech could be done

Yes, of course it could, by making a sintered carbide bottleneck insert, internally grinding/polishing it and precision bonding it into the steel die body.

It would be a lot more expensive than a steel die or a carbide-collared straight case die.

It would also be vulnerable to incorrect setting of the expander, which in sizing a bottleneck case functions on withdrawal, not entry. Once you'd cracked one such carbide die, you'd most likely hesitate to spend out on another. That's probably why nobody (AFAIK ) makes one.

[1066]

Don't no why that cannot make a bottle necked carbide die. Would think with all the tech could be done

Carbide rifle dies can be made without too much trouble and actually not prohibitively expensive, the drawback is that you still need to lube your cases.

Carbide rifle dies really find a use in high volume situations where die wear becomes an issue.

On the other hand you could invent a new sort of die that works like a collet die but sizes the whole case, clamping it to size rather than forcing it through a smaller hole.

The Lee carbide pistol die sets coupled with a Lee turret press and a Lee auto disc measure was a combination that I found difficult to beat in the days when I was loading several hundred a week.

https://www.dillonprecision.com/dill...8_4_24498.html

[thibben]

'On the other hand you could invent a new sort of die that works like a collet die but sizes the whole case, clamping it to size rather than forcing it through a smaller hole.'

Sort of a 'big' version of the Innovative Tech belted magnum die then? : http://www.larrywillis.com/

T

[1066]

'On the other hand you could invent a new sort of die that works like a collet die but sizes the whole case, clamping it to size rather than forcing it through a smaller hole.'

Sort of a 'big' version of the Innovative Tech belted magnum die then? : http://www.larrywillis.com/

T

Very much on the right track - I use ER32 tooling in my milling machine, the collets grip well and a similar system for full length sizing a normal rifle case should work well.

I'll have a bit more of a think on that.

Here's an expanding die I recently made:

https://www.youtube.com/watch?v=MTW20NzZ-OA

[Simon_S]

Could they use the same method they use to make turbine blades