Tag Archives: 4D Products

Getting Ready for “This Season”

It’s that magical time of year when hunters start saying, “This Season” instead of “Next Season”.

Upgrade, try a new caliber.

Upgrade, try a new caliber.

Across the west every year when the big game draw results become public hunters start to plan for their fall trips.  Once you know the results of the draw it’s time to assemble the gear and goodies you will need for a successful hunting season.

The problem is eternal though, that for most sportsmen we are still fishing, boating, hiking, camping and doing all those summer time activities with family and friends.  It’s difficult to turn your attention to fall plans when you’re so busy having fun in the outdoors.

Doing just one small thing can greatly aid in your fall preparations and takes only a few minutes out of your summer.  Last season either you gun broke or you decided it needed an upgrade before next season.  Well, next season is now this season.  Grab that gun from the safe and get it to the gunsmith now.  You can avoid the seasonal rush and be much more likely to get your job done before the fall hunt is upon you.

Fall is just around the corner

Soon you will be glassing for that buck.

It takes time to get in parts or barrels to upgrade your firearm.  Leave time for the gunsmith to acquire the parts you want.  Many gunsmiths I talk to even offer specials this time of year to encourage bringing projects in early.

So drop your gun off now, so you can get back out there and enjoy the summer.  Then when fall hits you will have that new barrel, scope, stock, trigger or whatever you need to be more successful on you hunt this fall.

Now go have some fun!


Filed under Firearms, Gunsmithing, hunting

What is Cerrosafe™ and How to Make a Chamber Cast.

Cerrosafe from 4D Reamer Rentals LTD

CERROSAFE™ alloy was originally made for toy soldier castings. One of its most popular uses today is casting to check gun chambers. Cerrosafe shrinks during the first 30 minutes and at the end of one hour is EXACTLY the chamber size. Some other uses are casting cavities such as threads, dies, molds, blind holes, duplicate patterns in foundry matchplate making, support work pieces while machining; spray coating wooden patterns, dental lab techniques, masks for electroplating. Cerrosafe is a non-eutectic alloy with a yield temperature of 162.5º F.

To make a cast, clean the chamber thoroughly and apply a very thin film of oil or graphite. Plug the bore immediately ahead of the throat with a small cleaning patch – but not so tightly it cannot be driven out. If possible, pour the molten alloy through a small tube into the bottom of the cast, gradually removing the tube as the chamber fills.  We recommend that you warm the barrel to just above room temperature before making the cast. When cooled, remove from chamber, using a rod or dowel from the muzzle end of the gun.
Cerrosafe shrinks during the first 30 minutes of cooling and then at the end of an hour, is EXACTLY chamber size. At the end of 200 hours it will have expanded approximately .0025″. This factor is known to reamer or die makers and they will take it into consideration when making dies, reamers, or gauges from your casting – just tell them the cast is of Cerrosafe.
Cerrosafe is reusable, and never wears out.  It provides excellent casts of chambers and will save you from costly guess work.  Identification of chambers is simplified by a clean chamber cast that you can measure and rely on.
Cerrosafe melts between 158° – 190° F. This alloy should be melted in a clean, iron ladle. Source of heat should be removed as soon as the alloy is completely melted, at which time it is ready to pour. Solidified castings should be removed from the chamber before, or when, it cools to room temperature. Cerrosafe should not remain in the mold more than an hour, as it will grip the chamber walls and be difficult to remove.
Just a few minutes work, for reliable results.

4D Reamer Rentals LLC sells cerosafe in 1/2 and 1 pound ingots.


Filed under ammo, Firearms, Gunsmithing, How To, Rifles, tools

4D Reamer Rental made it to the Shot Show for 2009

4D Reamer Rental Show Show booth 2009

4D Reamer Rental Show Show booth 2009

If you are not familiar with this service 4D rents chamber reamers, headspace gauges, and many specialized gunsmith tools to the trade.  You can find them on our blog roll.

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Filed under Gunsmithing, How To, tools

Improved Pistol Accuracy!

Had an email from a client not long ago bragging about how he improved the accuracy in two of his revolvers.  Actually what he did is a simple procedure that really does help.  He reamed all the chamber throats in his cylinders to the same dimensions. 

Believe it or not, the factories are in too big a hurry in most cases to make all the chambers the same.  This is probably one of the biggest causes of accuracy issues with a revolver.  Cylinder Throating tools are made by Manson reamers, they come with several bushings so you can match up to each chamber throat when reaming.  My client said he used nearly every bushing by the time he finished his two cylinders.  Below are som photos that illustrate what he did.Shows how he kept track of what bushings were needed.Demonstrates how all throats are now the same.

He reported that before this job the guns shot between 2 and 4 inch groups @ 50 feet.  They now shoot much better, click here for a pdf of his targets.

He rented the tools from 4D Reamer Rentals, I check they have them in 357 and 45 caliber, they tell me they will add the 44 caliber tools as soon a client orders them.  All in all a pretty cheap way to get more out of your pistols.

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Filed under accuracy, ammo, Firearms, hunting