Sizing Down .429 Gas Checks to .423?

[Ray B]

I recently ordered a bullet mold for .404 Jeffery, bullet size .424", slightly smaller on base to hold gas check. The problem is I can't find gas checks in .423" size. I can get readily available gas checks in .429" (for 44 mag). I have a RCBS Lubimatic sizer and am wondering if it will work to slip the .429" gas check on the .423" base and size it down to fit. Anyone have experience on this topic?

 

[Ray B]

Giving it some thought, I'm wondering how a punch and die would work. a steel bar could have a hole the shape and size of the desired gas check and a punch that was flat, diameter the size of the cast bullets shank. So that the punch could be inserted into the space on the bar with clearance for the gas check. So a .429" gas check could be placed on the bar over the space. The punch could be inserted into the gas check, whacked with a hammer driving the punch into the space and sizing the gas check down to .423". ??

 

[GuttormG]

Yes, 429 gas checks works just fine.

 

[Scrumbag]

Good to know!

 

[Proneshooter]

Scrumcap,
I use .429 gas checks on my 404 cast bullets. Have a Lee push through sizer and it works great, but I never had much luck using my Lube Sizer. All bullets are powder coated prior to sizing.

 

[Ray B]

Proneshooter- I checked the LEE website and they list push-through sizers for .410 then .427. It there a way to get one in .424?

 

[Proneshooter]

Proneshooter- I checked the LEE website and they list push-through sizers for .410 then .427. It there a way to get one in .424?

Reamed and polished it out myself.

 

[Scrumbag]

Proneshooter- I checked the LEE website and they list push-through sizers for .410 then .427. It there a way to get one in .424?

I just ordered one of these: https://www.titanreloading.com/product/custom-overrun-424-bl-bullet-sizer-and-punch/

Scrummy

 

[hyipl]

429 gas checks works just fine

 

[Scrumbag]

429 gas checks works just fine

Where do you source your bullets from please?

 

[Hogpatrol]

Giving it some thought, I'm wondering how a punch and die would work. a steel bar could have a hole the shape and size of the desired gas check and a punch that was flat, diameter the size of the cast bullets shank. So that the punch could be inserted into the space on the bar with clearance for the gas check. So a .429" gas check could be placed on the bar over the space. The punch could be inserted into the gas check, whacked with a hammer driving the punch into the space and sizing the gas check down to .423". ??

That would work but you'd probably need more than a hammer and a good whack. A hydraulic or large arbor press would probably do it. The only gotcha would be the bottom of the gas check concaving.
You may want to give these guys a call. They specialize in a lot of oddball reloading equipment.

CH Tool & Die

 

[Hogpatrol]

Make your own.

404PB Jeffery cal | Patmarlins™

Patmarlins^TM - Precision Manufacturer for Checkmaker^TM Gas Check, Forming Tool and Die sets, POCKETLuberBP^TM, Handy Bullet Luber, ROCKDock^TM Reloading, Bench Docking Mount System. Order is guaranteed to be spot on and work flawlessly. We stand behind...

patmarlins.com

 

[hyipl]

Where do you source your bullets from please?

 

[hyipl]

and the sizer die on EBay

 

[Scrumbag]

@hyipl you cast your own?

 

[hyipl]

@hyipl you cast your own?

yes