Anybody used Larry Willis belt die?

[LynnJr]

Lynn junior, now I am convinced there is no way to type slow enough for you to understand. Then I have to consider you have an overwhelming urge to be rude and indignant.

F. Guffey

Frank
Nobody here is being rude.
Your writing style is incomprehensible to most because you think we know what you are talking about but you skip over 99% of the details.
You assume we somehow know the story so you don't give much detail.
You are probably an average reloader of hunting grade ammo but your posts are so cryptic and incomplete they are unreadable.
And when you tell a reloader who knows how to really reload that your brass swelled 0.014 inches in front of the belt that speaks volumes about your genius gunsmith.
It sounds like you were attempting to shoot the wrong ammo in a grossly out of spec chamber and still believe the gunsmith is a genius.
He sounds like a bib overall wearing dangerous knucklehead who doesn't know what he is doing. A genius gunsmith would never have chambered any cartridge with that kind of slop.

[ar15barrels]

I've never seen that and I shoot a lot of belted magnum cases. I could see it being useful if you have multiple guns in the same chambering and one of them has an enlarged chamber.

Factory chambers are generally pretty sloppy loose so the cases fired in these loose chambers will let the brass expend quite a bit.
As noted, typical sizing dies won't size down right to a belted case's belt.

When a barrel is running perfectly dialed-in in the lathe during chambering, the chamber tends to match the diameter of the reamer very closely.
I have had a few customers who I built 300 win mags run into problems when trying to use cases that were previously fired in factory chambers in the barrel I chambered for them.
My chambers fit new cases fine though.
Measuring the cases, it's easy to see where they are too big.
The collet die is the solution if they want to re-use old cases.
Otherwise, just use new brass and dedicate it to a specific rifle.

[ar15barrels]

So, this Larry Willis die...bottom line, is there a real bulging problem just above the belt that this die actually helps out with?

Yes.
If someone had fired a bunch of brass in a sloppy factory chamber and then rebarrelled their rifle with a nice tight match chamber, they would have problems with their brass fitting.
The collet die will size the over-expanded cases in an area that typical sizing dies will not reach.
This would make those old over-sized cases usable in the new tighter chambered barrel.

[ar15barrels]

A better word would be Muggles.

[Cowboy T]

Yes.
If someone had fired a bunch of brass in a sloppy factory chamber and then rebarrelled their rifle with a nice tight match chamber, they would have problems with their brass fitting.
The collet die will size the over-expanded cases in an area that typical sizing dies will not reach.
This would make those old over-sized cases usable in the new tighter chambered barrel.

Thanks, Randall. Reason I ask is that I bought a Weatherby Mark V in .300 Wby Mag and would like to develop loads for it. It was a very good deal, and I have a decent quantity of new Norma brass for it. The goal is to produce as close to full-speed loads as are safe, with 200+ grain bullets, with precision being the next consideration after safety.

I also have a 7mm Rem Mag (Winchester M70) with some Federal ammo, purchased from Walmart. I intend to reload this brass as well, again, as fast as is both safe and most precise in this rifle.

In both cases, the brass will be used with that gun only, and I already have neck- and full-length resizer dies for both chamberings.

Based on my interpretation of your advice above, Mr. Willis's Collet Die might not be as helpful in my situation. Would this be your assessment as well?

[ar15barrels]

The Willis collet die will not be of any help for someone who fires new cases in a single rifle and then only reloads those cases for that same rifle.

[Cowboy T]

Gotcha. Thanks!

[fguffey]

Based on my interpretation of your advice above, Mr. Willis's Collet Die might not be as helpful in my situation. Would this be your assessment as well?

[LynnJr]

OP
If your loading 200's in a 300 Weatherby use 74-77 grains of RE25.
My chambers match the bullet so a factory chamber with all the extra freebore will let you go even higher.

Frank
I can't address your exfoliation issue but with 0.014 worth of case expansion please never shoot in the same county I am in.
The pictures a 26 inch barrel in 223 sitting alongside a 300 Ackley blank which is simply an improved 300 Weatherby.
I have 7 reamers for the Weatherby and none allow a case to have 0.014 worth of expansion. The barrel pictured is larger in diameter than a 700 action.

[ar15barrels]

If the belt is seated in the chamber, how does the case expand.

Chamber is larger than cartridge case.

[fguffey]

I can't address your exfoliation issue but with 0.014 worth of case expansion

[LynnJr]

F Guffey
I would spend your time trying to figure out how a self proclaimed genius ended up with brass 0.014 too large.

You should look into one of the reloading classes offered here or just stick with factory ammo.

[fguffey]

I would spend your time trying to figure out how a self proclaimed genius ended up with brass 0.014 too large.

I hear you hollering for help, again, I can not help you.

F. Guffey

[LynnJr]

Frank your the one with bad brass not me. I actually know how to reload and have never had 0.014 over stretched brass.
Your gunsmith is a true genius.

[fguffey]

Frank your the one with bad brass not me.