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7mm rem mag primer question
- Thread starter leroy
- Start date
rugerfan
Senior Member
Yes you can, but from what my understanding is that Magnum primers burn a bit hotter and a bit longer to ignite powder in colder temperatures. I also caution you that a large rifle primer may not efficiently burn all of the powder charge, creating lower and inconsistent velocities. This most likely will cause accuracy issues.
I would not up your charge, as you will likely increase the issues that I stated above, and possibly other issues.
I am no expert, I would personally do an extensive search on the web to see what others say, and I am sure others with more experience in reloading will chime in here.
I would not up your charge, as you will likely increase the issues that I stated above, and possibly other issues.
I am no expert, I would personally do an extensive search on the web to see what others say, and I am sure others with more experience in reloading will chime in here.
Last edited:
bullethead
Of the hard cast variety
I use Magnum Rifle Primers for loads that contain over 60grs of powder.
I have used Winchester Lg Rifle Primers in loads that were between 60gr and 63gr but it is rare and only after I tried Magnum primers and those were with the faster burn rate slow powders.
I have used Winchester Lg Rifle Primers in loads that were between 60gr and 63gr but it is rare and only after I tried Magnum primers and those were with the faster burn rate slow powders.
Darkhorse
Senior Member
The 7mag case holds a lot of powder and it takes a magnum primer to effectively burn all this powder. That's the short answer.
I tried some regular primers years ago and wasn't satisfied so now I only use a magnum primer for all loads.
Less confusion, better results, I would stick with magnum primers.
I tried some regular primers years ago and wasn't satisfied so now I only use a magnum primer for all loads.
Less confusion, better results, I would stick with magnum primers.
Nimrod71
Senior Member
Leroy if you have plenty of LR primers you may be able to trade out for some Mag primers. As for you question, you can use regular primers but there will be a difference in velocity, do not increase the load.
WishboneW
Senior Member
Richard Lee’s recipe using RL22 with standard primers worked well in my 7 mag, using 139 grain Hornady BTSP
I'm loading a 120 gr barnes TTSX looking at various powders from 60-65 gr.
