Large Pistol -vs- Large Pistol Magnum Primers

[Onward Allusion]

For 44 Mag. Any advantage in using magnum primers? Starting point is powder puff loads and worked up from there.

BTW, this is with Titegroup, so a pretty fast powder. Fairly certain no advantage with mag primers with this, esp with light loads. Just wanted to confirm with the old-timers.

 

[buck460XVR]

Proper primers are dependent on powder used and not caliber. While one can use both in most applications, there are instances where there are advantages or disadvantages to either. What do your manuals say?

 

[Doyle]

^^ what he said. Magnum primers aren't used to make a load more "powerful". They are needed with harder-to-ignite powders.

 

[Reloadron]

As mentioned, the powder used determines the primer best suited to ignite it. That said there are some manuals, Hornady 9th for example which simply will suggest WLP (Winchester Large Pistol) which are for Standard or Magnum pistol loads. Follow what is suggested in your manual's load data.

Ron

 

[flyguy958]

Well, I'll differ with the above opinions. I like to keep things simple.
I work my loads up from the bottom of the powder chart so there are no pressure issues to start with.
I use LPM or SPM for all my loads. This eliminates a possible mistake of using the wrong primer in any of my loads. There are a lot of gotchas out there and I try to eliminate as many as I can.
There are no powders that will not ignite with a magnum powder, there are a few that will not, or give inconsistent, ignition with standard primers.

My 2 cents

 

[243winxb]

Rem 2 1/2 and WLP only LP made by each company.

 

[birdshot]

If you buy primers by the 1000 get the LPM, sooner or later you are going to want to load some h110.

 

[black_hog_down]

If you buy primers by the 1000 get the LPM, sooner or later you are going to want to load some h110.

Does H110 require magnum? How come?

 

[black mamba]

With Titegroup there is no need for a magnum primer. If you have both magnum and standard primers try both, sometimes one is more accurate than the other, and no way to know until you try them. As long as your loads are well below max, you should be able to switch back and forth.

 

[ShootistPRS]

black_hog_down
Does H110 require magnum? How come?

H110 is a slow double base powder that requires a magnum primer for positive ignition. The powder is hard to ignite because of the retardant coating that helps slow down the burn characteristics. This is true for most double based powders that retain their characteristic "ball" shape.
HP-38 is also a double base powder but it is rolled to flatten the granules which makes it easier to ignite. Burn speed is controlled with the amount and type of retardant used and the shape and size of the kernels.