Rem 6 1/2 primers for .223 & .204 ??

[davis211]

I made the mistake of picking up 2k Rem 6 1/2 primers to load some .223 & .204. After checking my data, it says to use Rem 7 1/2 for these rounds. Seems that the 6 1/2 is used for 22 Hornet....anyone had issues with these in .223 or .204? I've seen other posts with 50/50 go & no go.

 

[1006]

I am not not familiar with the Remington primer designations, but assuming one is a magnum and the other is not, the decision will be based on the powder choice.

In General, some powders require more flame to burn correctly.

IE: In my 7mm-08, I use magnum primers with H414 and standard primers with Varget.

The reload books' data is normally tested for safety.

 

[SpeedyR]

I"ve got both 6.5 and 7.5. I reload 22 hornet and 218 bee though so after I figured that out, I usually just keep them around for those loads. I have used them in 223 loads but I think if you are looking for ideal accuracy or consistency or outright performance (i.e. close to max or min loads) I would avoid them. I have never had one not go back in 223 loads, but I would be pushing the limits with them either. depending upon how much you shoot and what you do with your loads, just sell them or use them for plinking loads.

 

[jeffdt]

Are you loading for a bolt action .223 or a semi?

 

[dial1911]

I've used 6 1/2's for my .221 Fireball with no issues. Can't comment on .204 or .223.

 

[davis211]

Loading for bolt & semi auto. I spoke to one of my buddies & he's loaded 6k rnds of 223 with 25.0 gr H335 w no issues. He sent me pics of spent cases & they look fine...

 

[jeffdt]

Loading for bolt & semi auto. I spoke to one of my buddies & he's loaded 6k rnds of 223 with 25.0 gr H335 w no issues. He sent me pics of spent cases & they look fine...

I use 7 1/2's or CCI 41's in my AR, Read up on the 6 1/2's over at the black rifle forum and read several members have thousands down range with no issues. For my 22 hornet loads I use CCI 500 SP primers. The 7 1/2's do have a thicker primer cup (.025") safer for free floating firing pins.

http://www.jamescalhoon.com/primers_and_pressure.php