Using Magnum Primer.... - XDTalk Forums - Your HS2000/SA-XD Information Source!

KrayzieVanh · 06-07-2008, 07:01 PM

I recently bought CCI primers and found out it was the magnum version. How would I adjust my powder measure to account for this? (CCI Magnum Primer 450 Small Rifle, H322, 55 grn FMJ). Hodgdon site does not mention primer brand. Thanks!

highscore · 06-07-2008, 08:01 PM

I have used the same primers to touch off accurate 2460 which is a ball powder. I used them as I was a bit concerned that the powder would not ignite consistantly in the cold weather. Although you would think that the mag primers would boost pressure and speed, I did not find this to be the case and my loads were perfectly acceptable.

rgeliske · 06-08-2008, 11:06 AM

Use them the same way you would the regular primers. Magnum primer basically provide a hotter ignition but have little effect on pressure.

KrayzieVanh · 06-08-2008, 11:24 AM

I'll try from starting load and build up. Thanks!!

Mike in VA · 06-10-2008, 08:52 AM

I've tried both in my 7 mm Bench Rest pistol. The load was 26 grains of IMR3031 with the 154 grain Hornady bullet. The CCI450 primers increased the velocity by about 50 fps on average, from 1825 fps to 1875 fps. This is not a maximum load in my gun. If this was already a max load with standard primers, I expect that this would have started to show high pressure signs with the mag primers.

06-07-2008, 07:01 PM	#1
KrayzieVanh XDTalk Newbie Join Date: Apr 2008 Posts: 11	Using Magnum Primer.... I recently bought CCI primers and found out it was the magnum version. How would I adjust my powder measure to account for this? (CCI Magnum Primer 450 Small Rifle, H322, 55 grn FMJ). Hodgdon site does not mention primer brand. Thanks!

06-07-2008, 08:01 PM	#2
highscore XDTalk 100 Member Join Date: Mar 2008 Location: CT Posts: 261	I have used the same primers to touch off accurate 2460 which is a ball powder. I used them as I was a bit concerned that the powder would not ignite consistantly in the cold weather. Although you would think that the mag primers would boost pressure and speed, I did not find this to be the case and my loads were perfectly acceptable. __________________ If you want me to try YOUR ammo, let me use Your gun! HS

06-08-2008, 11:06 AM	#3
rgeliske XDTalk 1K Member Join Date: Aug 2003 Location: Central Florida Posts: 1,944	Use them the same way you would the regular primers. Magnum primer basically provide a hotter ignition but have little effect on pressure. __________________ Sig P220, Taurus PT1911, Browning HiPower 9mm, CZ75, CZ75 P01, Kahr CW9, Savage 9317 BTVS .17, Browning Buckmark, Taurus Gaucho 357 (pair), Taurus Gaucho 45LC (pair), Uberti 1873 Saddle Rifle 357, Uberti 1873 45 LC Carbine, TTN 12 Gauge Double, Ruger Bisley Vaquero 357 (pair), Springfield XD9SC, XD45 Service, XD45 Compact Tactical, XD(M) 40S&W BiTone, Taurus 617 357

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06-08-2008, 11:24 AM	#4
KrayzieVanh XDTalk Newbie Join Date: Apr 2008 Posts: 11	I'll try from starting load and build up. Thanks!!

06-10-2008, 08:52 AM	#5
Mike in VA XDTalk Member Join Date: Dec 2007 Location: Northern VA Posts: 66	I've tried both in my 7 mm Bench Rest pistol. The load was 26 grains of IMR3031 with the 154 grain Hornady bullet. The CCI450 primers increased the velocity by about 50 fps on average, from 1825 fps to 1875 fps. This is not a maximum load in my gun. If this was already a max load with standard primers, I expect that this would have started to show high pressure signs with the mag primers.