06-16-2015, 02:28 AM
The problem with the SPC case length is that there is not enough room for a decent ogive within the AR15 magazine length.
Shortening the case moves the optimal caliber in the direction of 6mm or .25 so the velocity can be kept at OK levels.
Shortening the case moves the optimal caliber in the direction of 6mm or .25 so the velocity can be kept at OK levels.
shootersnotes.com
"To those who have fought and almost died for it, freedom has a flavor the protected will never know."
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"To those who have fought and almost died for it, freedom has a flavor the protected will never know."
-- Author Unknown
"If at first you do succeed, try not to look astonished!" -- Milton Berle