.350 mag primer selection

[woodlotowner]

Standard primers or magnum primers? This is the question. I have seen different opinions (load data) for my .350 Remington magnum in terms of primer choice. Some like CCI-200, some Winchester LR (which is reportedly the 'hotest' standard primer), and some like the Winchester LRM (magnum). I had an incident with some unburned powder remaining in the gun using H-4831, but I think that loading information was just bogus, since this is too slow a powder for this caliber I now believe.
So what is your opinion on primer selection for this cartridge? If you feel powder makes a difference then I can tell you I now have H-380, H-4198, and BL-C(2) in stock.

Thanks,

Brendan

 

[Boomer]

Since I've lived in the North, it is simpler for me to purchase and load magnum primers almost exclusively, but down south you are under no such restriction. When I lived down south, my criteria for choosing a magnum primer was when the temperature dropped below 0F, the powder charge exceeded 50 grs, or when I chose to use hard to ignite ball powder. Speaking in general terms, the best accuracy is realized with the least amount of primer violence that will reliably ignite the powder charge.

 

[woodlotowner]

Since I've lived in the North, it is simpler for me to purchase and load magnum primers almost exclusively, but down south you are under no such restriction. When I lived down south, my criteria for choosing a magnum primer was when the temperature dropped below 0F, the powder charge exceeded 50 grs, or when I chose to use hard to ignite ball powder. Speaking in general terms, the best accuracy is realized with the least amount of primer violence that will reliably ignite the powder charge.

Boomer,

You and Chuck Hawks are on the same page. Thanks very much for your response.

Brendan

 

[dan belisle]

I use regular LR primers in mine, haven't found a need for magnums with the powders I use. - dan

 

[Neilm]

I use a Remington Magnum Primer with 748 which is just about the same as ball c

 

[stanway]

I use a Federal 210 primer (standard large rifle) and IMR 4064. Excellent accuracy and consistent for Spring bear or late season deer hunting.

 

[woodlotowner]

Thanks for the input you guys. I have loaded up some starting loads with WLR standard primers using BL-C(2) behind some 180s. It's the 180s that have been the problematic ones, since the 200s work just fine with standard primers and H-380. If I still have issues with this bullet weight I will switch to H-4198 and try this. I would use H-380, but I have no load data for this powder in this bullet weight. There's probably a reason for this...

 

[sunray]

The primer used has nothing to do with the cartridge name. Magnum primers are about the powder used. They burn a bit hotter for a bit longer and are for lighting hard to ignite powders and cold weather shooting. If your manual doesn't say you use 'em, you don't need 'em. However, if you're shooting in cold weather, after working up a load for standard primers, you'll have to work up the load again.
"...no load data for this powder in this bullet weight..." Hodgdon's site. 200 grain bullet,59.0 to 64.0 grains of H380. H380 wasn't tested by them with 180's.

 

[Whelen B]

Spent most of my life loading the 350RemMag. At present I care and feed four of them. I prefer WLRM but also use WLR. I'm happy with either one but if I could only have one it would be the WLRM. Just me maybe. But I see no down side to them. Also I don't use any ball or spherical powders like W748 (some report very good in the 350RemMag BTW) which might (?) benefit more from the magnum sparkers.

As commented above, whatever you choose, work up loads to max using that particular primer. Work up loads again if you substitute another.