45 GAP primers?????

Ozzieman · April 11, 2009, 02:33 PM

Never gave the 45 GAP much thought until last week when I was at the range and the shooter at the next position was blazing away with one.
When he left he didn’t clean up his brass so when I was picking up mine I got some of the GAP.
When I looked at it for the first time I was surprised that the round uses small primers.
Any one know why they use small primers?

Russ5924 · April 11, 2009, 04:22 PM

I guess they don't need the large primer with the shorter case

Wulfmann · April 12, 2009, 11:00 AM

Pure guess in on my part but perhaps to make it easy to identify ACP from GAP cases.
They are so close in dimension it is easier to just look at the primer.
Modern powders and primers being more efficient than when John Browning designed the 1911 the SP works more than fine in such a case.

Wulfmann

Dingoboyx · April 12, 2009, 11:04 AM

If they are a small magnum primer, with a mixture with 11 different herbs and spices, that gives about the same flash size as a standard large pistol primer. The small primer pocket probably gives the butt of the case more strength, and the other 2 posters are probably right on the mark too

Jim Watson · April 12, 2009, 11:10 AM

I haven't talked to Gaston this week, but it MIGHT be the same reason the .40 uses a small primer while the 10mm uses large. That is to reduce the risk of the ejector hitting the primer when clearing a live round.

April 11, 2009, 02:33 PM	#1
Ozzieman Senior Member Join Date: December 14, 2004 Location: Northern Indiana Posts: 6,117	45 GAP primers????? Never gave the 45 GAP much thought until last week when I was at the range and the shooter at the next position was blazing away with one. When he left he didn’t clean up his brass so when I was picking up mine I got some of the GAP. When I looked at it for the first time I was surprised that the round uses small primers. Any one know why they use small primers?

April 11, 2009, 04:22 PM	#2
Russ5924 Senior Member Join Date: February 18, 2005 Posts: 1,874	I guess they don't need the large primer with the shorter case __________________ Russ5924

April 12, 2009, 11:00 AM	#3
Wulfmann Senior Member Join Date: November 15, 2007 Location: Central Florida Posts: 188	Pure guess in on my part but perhaps to make it easy to identify ACP from GAP cases. They are so close in dimension it is easier to just look at the primer. Modern powders and primers being more efficient than when John Browning designed the 1911 the SP works more than fine in such a case. Wulfmann __________________ "The right to bear arms should not be infringed upon if only to prevent tyranny in government". Thomas Jefferson, Constitutional debates

April 12, 2009, 11:04 AM	#4
Dingoboyx Senior Member Join Date: March 7, 2009 Location: South East Queensland, Australia Posts: 1,513	I wouldn't be suprised If they are a small magnum primer, with a mixture with 11 different herbs and spices, that gives about the same flash size as a standard large pistol primer. The small primer pocket probably gives the butt of the case more strength, and the other 2 posters are probably right on the mark too __________________ Muzza If you cant blind them with brilliance, Baffle them with BS Be alert...... there is a shortage of LERTs

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April 12, 2009, 11:10 AM	#5
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,532	I haven't talked to Gaston this week, but it MIGHT be the same reason the .40 uses a small primer while the 10mm uses large. That is to reduce the risk of the ejector hitting the primer when clearing a live round.