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Are the Leade and Throat the same?
Is the Freebore part of the Leade or Throat?
What is the difference between SPC and SPCll?
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Are the Leade and Throat the same?
Is the Freebore part of the Leade or Throat?
What is the difference between SPC and SPCll?
Thanks
SPCII has a longer freebore/throat/leade. This lowers chamber pressure by allowing the bullet to get moving before being stopped by the rifling. Therefore you can shoot higher pressure loads safely in the SPCII chamber. All iterations of SPCII are longer than SAAMI spec chamber, ARP chamber, PT&G chamber, etc. There is no difference in case dimensions, it simply allows hand loaders to run higher pressures. Personally, I run 110gr BTHP at 2800 fps, can't do that in a spc chamber.

-Alexander
 

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SPC has a .050 freebore
SPCII has .100 freebore


Sent from a final firing position, the crosshairs are on you!
 
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