Small rifle magnum primers

[tribb]

May the small rifle magnum primer be used in place of small rifle primers?

 

[tribb]

May the small rifle magnum primer be used in place of small rifle primers?

 

[zr600]

Yes just back off your load and work back up they are a little hotter maybe, and thicker cups generally.

 

[L.Sherm]

Generally ive found to be just thicker cups from same brand say Rem. 6.5- 7.5 but backing off and working up is still a good idea. Accuracy definitely a difference from one brand to the next.

 

[MagnumManiac]

I use them with 748/760 powders in my SR brass. All I use in my Lapua 22-250AI brass.
I have never seen them alter a load, I only use them from Federal, but I have never just switched, I test both during load development. I am sure the Federal SR magnum primers are hotter, would have to check the Pressure Trace data to be sure.

Cheers.

 

[tribb]

I use them with 748/760 powders in my SR brass. All I use in my Lapua 22-250AI brass.
I have never seen them alter a load, I only use them from Federal, but I have never just switched, I test both during load development. I am sure the Federal SR magnum primers are hotter, would have to check the Pressure Trace data to be sure.

Cheers.

Thank you

 

[tribb]

Yes just back off your load and work back up they are a little hotter maybe, and thicker cups generally.

Roger

 

[tribb]

Generally ive found to be just thicker cups from same brand say Rem. 6.5- 7.5 but backing off and working up is still a good idea. Accuracy definitely a difference from one brand to the next.

Thanks

 

[tribb]

I use them with 748/760 powders in my SR brass. All I use in my Lapua 22-250AI brass.
I have never seen them alter a load, I only use them from Federal, but I have never just switched, I test both during load development. I am sure the Federal SR magnum primers are hotter, would have to check the Pressure Trace data to be sure.

Cheers.

Thanks

 

[johnnyk]

I interchange them quiet often in the 6mmBR Norma. Some powders work great with the CCI BR4's and/or Rem 7 1/2's. My most consistent and accurate loads seem to come from using CCI-450 SRM's.

I saw a mention above of the Rem 6 1/2's. I read some controversy about them from a few years back. Someone was saying they were developed by Remington for low pressure cartridges, like the 22 Hornet, I think. It also went on to mention that they should not be used in .223 loads but I think they were meaning to say AR-15 loads, as the cups are thin and susceptible to slam fires in these semi's.
I have and can confirm that they behave and shoot just fine in bolt action .223 Rem's. As a matter of fact,
6 1/2's with 25.4gn of Viht N133 and 50gn VMax's is very accurate to 600yds in my Marlin X7VH.

 

[L.Sherm]

Remington specifically warned against using 6.5 primers with AR's and 223 bolt guns. There 6.5 were for hornet style cases only.

 

[Paulstarr]

I find that 6mm BR is inherently accurate with a large selection of primers/powders and bullet selections,I have at leased a dozen different combinations that are
really good.

 

[Wrenches]

I just went into my load room and pulled out a brick of 6.5 Remington primers and read the Safety warning on the box. Here is what it says: Warning do not us 6 1/2 small rifle primers in high intensity rifle cartridges such as the 17 Rem. 222 Rem, and the 223 Rem. Damage to your firearm and/or serious personal injury may result. Contact Remington Arms @ 800-243-9700 for a free catalog or visit our website: www. remington.com. Recommended primers for each cartridge are listed in the catalog ballistics tables. Looks to me like usage in high pressure cartridges is courting disaster.

 

[longtubeman]

I only use cci 450 in all small primers. AR or bolt they work great. As for extra speed, they add about 10 fps.