FL sizing help needed

[Triffid]

I'd say that the die was faulty.
I had the same issue with a Forster 300PRC F/L die . . . badly scratched cases and very hard re-sizing, even with Imperial wax.
I looked into the die with a borescope and found it had been very poorly finished inside, with prominent tooling marks around the circumference of the die.

Poor machining and quality control from Forster, which surprised me.
Back to supplier (Brownells), who then sent me two replacements by mistake. One was nearly as badly finished, the other merely OK, but polished UP ok with 1000 grit paper and Solvo-Autosol.

Having the borescope image to send to the supplier saved alot of argument.

Triffid

 

[lukelukeluke]

I'd say that the die was faulty.
I had the same issue with a Forster 300PRC F/L die . . . badly scratched cases and very hard re-sizing, even with Imperial wax.
I looked into the die with a borescope and found it had been very poorly finished inside, with prominent tooling marks around the circumference of the die.

Poor machining and quality control from Forster, which surprised me.
Back to supplier (Brownells), who then sent me two replacements by mistake. One was nearly as badly finished, the other merely OK, but polished UP ok with 1000 grit paper and Solvo-Autosol.

Having the borescope image to send to the supplier saved alot of argument.

Triffid

Thanks it sounds like the exact same position I’m in, as I have a feeling without a borescope photo supplier may not replace. May I ask what borescope you used and I will have a look at buying one, another useful tool!

 

[Triffid]

Mine was a Teslong wifi one.
They've changed the model now, but the NTG100 looks OK as long as you can use a USB connection.

 

[Triffid]

Here are some pictures of the inside of my 300PRC F/L die.
You can see all the annular tooling marks and where it has scratched the brass.

 

[Smellydog]

Just crap lube.
Get some coconut fat and just use your fingers.
Your lube wouldn't lube a gnats nadger.

 

[Smellydog]

The 44 dies are probably carbide dies and don't need lubricant.

 

[Bowland blades]

looks like you have used a neck only sizing die and you ran it harder into the shoulder ? It should be real easy to sort this but its hard to get the issue from the damage . There really is no need for neck only sizing and you will have to full length size at some time anyhow on bottle neck cartridges !
Just my best bet from the picture

 

[andy R204]

Just crap lube.
Get some coconut fat and just use your fingers.
Your lube wouldn't lube a gnats nadger.

The sailor in me is reading this wrong SDshould you be on a different website

 

[Smellydog]

The sailor in me is reading this wrong SDshould you be on a different website

Lol, I just re read it lol...

 

[Smellydog]

Beeswax, beef fat, coconut fat, olive oil and aniseed oil.
All sorts for my muzzleloaders but it's also a fantastic sizing lube.
Never a stuck case and kind to the skin.

 

[MilesW]

Another image to show the scratches (no dents)

looks like you have used a neck only sizing die and you ran it harder into the shoulder ? It should be real easy to sort this but its hard to get the issue from the damage . There really is no need for neck only sizing and you will have to full length size at some time anyhow on bottle neck cartridges !
Just my best bet from the picture

I must ask;

What evidence is there in that picture that a die has been run hard into the shoulder?
How does a neck only die which has no contact with the case - by design - leave longitudinal scratches in a case?

I do hope the OP sorted his issue. Was it lack of lubricity or debris in the die?

 

[Leec6.5]

Don’t worry about it!

Dry tumble with some T cut In the media and I’ll soon have it all smooth and shiny for you.

Just had another look at the OP’s first pic and I ask the , why are you even worried about it?

Dents you have problems, scratches personally is a vanity thing

 

[lukelukeluke]

I’ve returned the die set to the supplier and I’ve been refunded but no clarity on the reasoning so I’m assuming it’s a common issue.

It’s not just the visible scratches but also the noticeable resistance on the press stroke, about 80% of the case into the die. From my limited experience I was under the impression sizing with lube should be a smooth operation.

I will test on new dies and hopefully it’s as simple as that, and report back here.

 

[jb1]

I’ve returned the die set to the supplier and I’ve been refunded but no clarity on the reasoning so I’m assuming it’s a common issue.

It’s not just the visible scratches but also the noticeable resistance on the press stroke, about 80% of the case into the die. From my limited experience I was under the impression sizing with lube should be a smooth operation.

I will test on new dies and hopefully it’s as simple as that, and report back here.

You will.notice more effort resizing if you on max load. At least I know I do.

 

[nocturnaldave]

in your original post you said you were having the same issue with your 223 die…… I suspect the dies are fine…. Lube I suspect.

 

[lukelukeluke]

I’ve been using neat castor oil as a test but still getting scratched cases so I find it hard to believe it’s lube. Still, could be the press being the issue, so when the new dies arrive I will test on a friends press before mine

 

[lukelukeluke]

You will.notice more effort resizing if you on max load. At least I know I do.

Should the effort still be smooth? Mine feels like binding

 

[Leec6.5]

I’ve been using neat castor oil as a test but still getting scratched cases so I find it hard to believe it’s lube. Still, could be the press being the issue, so when the new dies arrive I will test on a friends press before mine

Why not just use the proper stuff?

I’ve been using RCBS case lube for donkeys years, I’ve never had a problem.

Cutting corners causes problems

 

[Smellydog]

Should the effort still be smooth? Mine feels like binding

Wrong lube.

If I remember correctly castor oil works well in hot environment.
If you want to experiment I found coconut fat melted with bees wax makes a good lube for sizing and other uses. Beeswax and olive oil as well.

 

[Foxyboy43]

Hmmm.
Forget f/l resizing - for all but the most perfectionist (i.e. sad) shooters neck-sizing will do all you will ever need and you defo won’t scratch the case (pause for collective gasping/swooning/fainting from the “simply must do the f/l resizing only dahling thing” branch of the SD collective).
Simples….