Unis Ginex Lg rifle primers for 7mm mag

[DeerCatcherUT/CO]

Does anyone have experience loading 7mm rem mag with large rifle primers. All I can find now days in the Unis Ginex Lg rifle primers and wondering if I can just use a hotter powder instead of magnum primers.

 

[35WhelenAI]

Can you articulate what is a "hotter powder"with respect to being a substitute for a hotter primer? What powders are you aware of that are hotter than others and have been referenced and used in place of a hotter primer in reloading?

 

[DeerCatcherUT/CO]

I’ve read if you use a faster burning powder, it can compensate for the difference between a large and magnum primer

 

[DeerCatcherUT/CO]

Can you articulate what is a "hotter powder"with respect to being a substitute for a hotter primer? What powders are you aware of that are hotter than others and have been referenced and used in place of a hotter primer in reloading?

Can you answer or no?

 

[35WhelenAI]

Happy to answer!

You said hotter powder, not faster powder in your first post. Faster powders have little to do with being a hotter powder when it comes to being a substitute for a hotter primer. Anything to do with powder temp (hotter or not) happens in the barrel.

Faster powders use less charge volume and by that virtue could be more suited to standard primers. Gotta be aware that smaller charges of faster powders take up less space, and in a magnum case that leaves more empty space, which can lead to inconsistent ignition or in extreme cases, pressure gets out of hand because ignition takes place in the back, side and front of the powder charge more or less all at once instead of a consistent back to front powder exposure to the primer blast.

 

[BCsteve]

The 7mm Rem Mag is not that big of a case, just use your Ginex primers with your normal powder load.

 

[DeerCatcherUT/CO]

Happy to answer!

You said hotter powder, not faster powder in your first post. Faster powders have little to do with being a hotter powder when it comes to being a substitute for a hotter primer. Anything to do with powder temp (hotter or not) happens in the barrel.

Faster powders use less charge volume and by that virtue could be more suited to standard primers. Gotta be aware that smaller charges of faster powders take up less space, and in a magnum case that leaves more empty space, which can lead to inconsistent ignition or in extreme cases, pressure gets out of hand because ignition takes place in the back, side and front of the powder charge more or less all at once instead of a consistent back to front powder exposure to the primer blast.

Thank you for the info