Jump to content
Sign in to follow this  
impala59

Cerrosafe chamber casting alloy

Recommended Posts

I will shortly be starting to reload for my 10g Ithaca Mag 10 and my 1911 10g Ithaca Flues Double. The Flues was, I believe, originally chambered for 2 5/8" cartridges but has a UK Birmingham proof mark of 76mm. To ascertain the actual chamber size, my research has led me to the above named product, Cerrosafe. I would be grateful for any experience you have with this product, or any other foolproof ways of measuring the chamber size accurately. The Mag 10 is not an issue as it is 3 1/2" chambered. I will be using a roll crimp for both loads

Share this post


Link to post
Share on other sites

I have some Cerrobend.

We used to use it at work for bending thin walled metal tubing.

It melts in nearly boiling water.

Share this post


Link to post
Share on other sites

Yes, it’s just a precaution really, the cases I ordered are all 3 1/2” so for my old Flues I will have to cut to fit. With a little time to consider this, I will be able to insert the new(long) cases into the breech until they reach the chamber end and then measure the cut I need at the back end. The chamber casting idea came from a Midway video I was watching. Just have to wait for my cases I guess. 

Unless you have a better idea?🙂👍💡

Share this post


Link to post
Share on other sites

Well, I would probe the side of the chambers with a parallel sided steel rod and feel for the start of the forcing cone, that would allow you to measure the hidden portion of rod and be sure.

Share this post


Link to post
Share on other sites

You could plug the barrel in front of forcing cone and cast lead in the chamber, this would give you the length of chamber and forcing cone.

Think I would go with tight choke and use a steel rule.  Quick and simple.

Share this post


Link to post
Share on other sites
2 minutes ago, figgy said:

You could plug the barrel in front of forcing cone and cast lead in the chamber, this would give you the length of chamber and forcing cone.

Think I would go with tight choke and use a steel rule.  Quick and simple.

We like quick and simple!:good:

Share this post


Link to post
Share on other sites
1 minute ago, figgy said:

If it works no point complicating things.

Unless you are a POLITICIAN!:whistling:

Share this post


Link to post
Share on other sites
19 minutes ago, figgy said:

You could plug the barrel in front of forcing cone and cast lead in the chamber, this would give you the length of chamber and forcing cone.

Think I would go with tight choke and use a steel rule.  Quick and simple.

Years ago I did this (fibre wad in the barrel proper, in front of the forcing cone) used a wood dowell down the centre of the chamber to minimise the quantity of cerrosafe required, I used the resultant casting as a pattern for making 4 bore solid brass cases...........got the cerrosafe from France!

Share this post


Link to post
Share on other sites
Posted (edited)

Impala i admire your attitude to getting things right and doing a chamber casting will get you the measurement you need, but its not like its a small chamber and its not especialy long at 3 inch ish . So to save you the trouble of a casting could you not simply use a tail of any vernier and measure it to forcing cone. or try this.  use a 16 instead of 20  inside and ten hull. 

 

.

Edited by lancer425

Share this post


Link to post
Share on other sites

Telescopic bore gauge set and locked in the chamber and then measure the shaft when it comes to a halt in the cone. Also handy for measuring chokes assuming one has a mic or vernier.

Share this post


Link to post
Share on other sites

Thanks one and all , when I get off this horrible shift pattern, I shall endeavour to try the simplest way first!

Share this post


Link to post
Share on other sites

Shifts are an invention of the devil himself, i hated them best thing i ever did packing in job with shifts.

Share this post


Link to post
Share on other sites
Posted (edited)

We have just pinched some of the kid's plasticine and pushed in a big plug when checking chambers in  the past.

The trade used to make a sulphur cast. Now I believe they use Vinamould 

Edited by Vince Green

Share this post


Link to post
Share on other sites

You could try plugging the bore proper (after the forcing cone) and melt candle wax/tallow into the blocked chamber, once set, push it out with a cleaning rod inserted from the muzzle?

Share this post


Link to post
Share on other sites

Your Flues will  have 2 7/8 inch chambers if not altered. Chamber length can be measured with a steel rule, Or better with a chamber Gage. One can be made from a round wooden dowel turned down to loosely fit the diameter of chamber and marked at. 2 7/8 and 3 inch and 3 1/2 . Cerro safe not the best choice for shotgun chamber . It is fantastic for rifles in doubt of clambering. But a waste for shotguns.

Share this post


Link to post
Share on other sites

Think laterally. I have a plastic felt tip pen with a blunt end. "opposite to the inky bit" Which fits my 12g guns exactly. Push it in till it stops. Mark it, Then pull it out. I find my very old guns have a forcing cone almost like a step. Opposite to my new Browning with a three inch cone!!!

Share this post


Link to post
Share on other sites

My post on this subject has some incorrect information..   The Flues was meant to fire 2 !/5 inch Ammo and chambers were 2 5/8 inches to allow the expansion of the rolled crimp.. The gun was intended for low pressure ammo of the era and modern 2 1/5 inch exceeds the proof of the time. In The US low pressure 2 1/5 ammo is available and commonly used in classic old double guns.. The shotgun that replaced the Flues is the NID and that gun can handle higher pressure loads. The Flues action can crack through if modern CIP proofed loads are used

Edited by simcgunner

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...