primer question

[wobbly34b]

Just ran out of large pistol primers, but I discovered that I have 2000 magnum large pistol primers, sooo what would be the results if I use the mag primers in some mild 44 special loads.

just asking

Bob

 

[Tom W]

Cut back a grain or two, unless you're using H110......

 

[NikA]

I've been trying to use up some Federal LPM primers in mid level .44M and .41M loads. I loaded to the bottom of my Unique loads: 7.5 gr in .41 and 10 gr in .44. I normally use 7.0 gr in .44S, might go a hair less than 6.5 gr with a LPM primer.

 

[Jimbo357mag]

In high pressure loads substituting a magnum primer for a standard primer might increase the pressure a little. In mild or midrange loads there should be no difference. Winchester has a large pistol primer that they suggest for any load. (WLP)

 

[mikld]

As with any change of components, it's good reloading prudence to start load development again; go back to starting loads. Although most don't adhere to this thinking, we will at least drop the powder charge to compensate for a "hotter", longer burning primer...

 

[Get Wood]

I Was Always Told When Going To A Mag. Primer To Cut one Gr. Of Powder . Has Always Worked For Me . But I Load Middle Of The Road Loads. I Have Always Liked My Fingers...

 

[Chuck 100 yd]

Most of the Cowboy Action shooters at our club were shooting magnum primers during the Obama shortage, that is all we could find. Cowboy loads are soft but still have higher pressures than most people think with their fast burning powders.
Dropping back to suggested starting powder charges and working up should keep you in safe pressure ranges. Or just change to a powder that calls for a mag. Primer.

 

[loaded round]

...or W-W 296, same powder, different container.

Cut back a grain or two, unless you're using H110......

 

[7p's]

You won't notice any difference with magnum primers with one possible exception - that being the CCI 350 primer, as that's the hottest American made primer currently on the market and will raise pressures a bit in large straight walled cases such as the 45 Colt and Linebaugh calibers.

For cold weather use - temperatures like -30F to +30F with some powders - the CCI350 is the go to large pistol primer.

 

[Divernhunter]

I use mag primers in all my loads and have never had a problem. They are suggested with any ball powder. They should be used when using H-110 or Win296

 

[mike campbell]

Without a chronograph you can only guess.

With a chronograph, you'll find whether there's a difference....with your ammo....in your gun...and decide whether it matters. That will still leave you guessing what it might mean to someone else.