300 WSM and h4350

[Ghys_T3LSS]

Do you guys use large rifle primers or magnum primers?

Some books says LR while others say LRM.

Pros and cons, observations?

Thanks!

 

[Gatehouse]

Magnum, but Large Rifle will work too.

 

[Lefty Dick]

LRM's

 

[Ghys_T3LSS]

So you say that from your experience? If so, what are the recipes you use. I am planning to shoot 165 grains.

Thanks,

 

[skidderman]

Have always used magnum primers. Only shoot 180's so can't comment on 165's.

 

[bcsteve]

Magnum

 

[Lefty Dick]

So you say that from your experience? If so, what are the recipes you use. I am planning to shoot 165 grains.

Thanks,

Look for online or printed data, I don't share my loads as a habit.

 

[Diablo7101]

I've used both....my best loads with 180's with r-19 was with large rifle primers...my best loads with imr4350 is with magnum primers. Only experimenting will tell...each rifle is different.

 

[Ghys_T3LSS]

Thanks guys,
I was just wondering if it was useful to spend money on trying to get good results with a large rifle primer...! Answer seems to be it could be working well.

Last question for this post...! Other than bad precision, is there some clues that don't lie about having the wrong primer? Sound, delay?

Ghys,

 

[Lefty Dick]

Thanks guys,
I was just wondering if it was useful to spend money on trying to get good results with a large rifle primer...! Answer seems to be it could be working well.

Last question for this post...! Other than bad precision, is there some clues that don't lie about having the wrong primer? Sound, delay?

Ghys,

Extreme velocity spread, standard deviation in velocity, and poor groupings.

The differences may not be as apparent in warmer temps, but it could be more obvious in the cold.

 

[Gatehouse]

The only reason I would not use magnum primers in a hunting rifle is if I didn't have any.

 

[daman2270]

I've used both and got better groups with regular large rifle primers so that is what I use....haven't seen the need for magnum primers in a WSM with any of the powders I've used ... I guess if you are using ball

 

[sunray]

Using large rifle primers or magnum primers has nothing to do with the cartridge name. Magnum primers are about the powder used. Hodgdon suggests using magnum primers with H4350.