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Core Seater, type -H
Core Seater, type -H Quantity in Basket: None
Catalog No.: CS-1-H
Price: $299.00
Shipping Weight: 1.00 pounds
Enter ONE bullet caliber (diameter) in inches:
Select external punch (only for CS - core seat punch):
Not applicable tor this punch
Open tip
Lead tip
Open tip hollow pt.
Lead tip hollow pt.
Select a SWC nose shape
Open Tip external punch diameter (if known, to fit jacket ID):
Enter optional nose shape description:
Enter base style:
Flat base
Dish base
Cup base
BG base
Hollow base
Custom base
Describe custom base:
Enter desired weight range in grains:
  Discover CS Punch diameter for my jacket/core combo ($30)
Sample jackets for fitting punch:
Yes, I AM sending 6 jackets
Use Corbin jackets, specified below
I sent 6 jackets before ordering.
I am NOT sending any jackets: just guess!
Corbin Jacket Cat.No. (if using our jackets):
Enter finished bullet weight to be made:
The CS-1-H core seating die can be used two ways. It can be used to make a lead or semi-wadcutter jacketed bullet, when used with a nose-forming punch. More often, it is used to seat the core into a jacket, in preparation for the point forming operation in the PF-1-H die.

The diameter of the core seater is slightly less (.001 to .005) than the final diameter, which is achieved in the point forming die. Therefore, a bullet finished in the core seater is normally just slightly smaller than the bullet finished in the associated point former.

The core seating die itself is usually specific to a caliber, but the external punch that comes with the die must be sized to fit either the ID of a specific jacket, or for large lead tip bullets or SWC styles, it must fit the ID of the die itself. Unless otherwise specified, a punch will be provided that seems most logical for the application. Typically this would be to make open tip bullets in a commercial jacket, for calibers where Corbin offers ready-made jackets, or to fit inside a standard .035-wall tubing jacket for other calibers.

If you don't know what diameter of core seat punch is needed, and want to send sample jackets (6) or use our jackets for a specific weight open tip bullet, you can check the "discover" box, and we will discover the right diameter of punch by testing with the jacket you specify (and send, if it isn't one of ours). We need to know the weight so we can make cores of the proper length, and fit the punch to the ID of the jacket at that distance.

The time it takes to make cores, and seat them in your jackets by adjusting the punch diameter until it doesn't stick (and removing stuck jackets from the punch as the size is discovered) is anywhere from 25 to 45 minutes. The $25 discovery and fitting fee is less than the normal hourly shop rate. If you would like to provide the diameter, you can estimate it by subtracting 0.0003 inches from the final bullet diameter, then subtracting twice the jacket wall thickness at the position of your core height after seating. That will be close to the ID of the jacket after the core has been seated, and the jacket expanded to fit the core seat bore. Then no test and discovery time is required to make the punch to your specified diameter.

Related Item(s)
Code Name Price Availability  
PUNCH-H Punch, type -H $70.00  
PUNCH-HC Custom punch, type -HC $299.00  
PUNCH-HA Adj. Length Punch, -H (<= .375) $229.00  
PUNCH-HL Adj. punch, type -H (> .375) $349.00  
PUNCH-HF Long punch for powder funnel, type -H $78.00  
PUNCH-SL Adjustable punch, type -S, (...50 tubing) $229.00  
CSW-1-H Core Swage Die, type -H $299.00  

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