125 Noslers & 300wm

[scope eye]

Yes I find that with reg primers the powder burns more consistent and evenly, with no bridging or spikes in pressure. Which allows you to load more powder or run the loads hotter, and also you can see signs of pressure at a more gradual progression. IE: From Flat Primers to ejector marks to sticky bolt and then to blown primers and then finally stuck cases. I have found that Mag Primers can skip over a few steps IE: Go From flat primers to Stuck case and just jump over they other three tell tale signs.

Dean

I run non mag primers in all my RUMs and some hold 115+ grains of powder.

 

[long40shot]

Yes I find that with reg primers the powder burns more consistent and evenly, with no bridging or spikes in pressure. Which allows you to load more powder or run the loads hotter, and also you can see signs of pressure at a more gradual progression. IE: From Flat Primers to ejector marks to sticky bolt and then to blown primers and then finally stuck cases. I have found that Mag Primers can skip over a few steps IE: Go From flat primers to Stuck case and just jump over they other three tell tale signs.

Dean

I run non mag primers in all my RUMs and some hold 115+ grains of powder.

No issues in a broad temperature range? Say from 10° to 95°? I only ask because I've never used a regular primer in a mag case.

Matt

 

[scope eye]

I don't know about 10Deg or anything really below 40deg, I do know that between 40 and 100 I'm good to go.

Dean

 

[long40shot]

Very nice. Suppose I'll have to try that. Appreciate the info sir.

Matt

 

[james]

Very nice. Suppose I'll have to try that. Appreciate the info sir.

Matt

I have an FN SPR A3G tactical rifle that I am going to try these Nosler 125 BT's in. I am going to play with it at local varmint matches where we shoot out to 400 yards. I have loaded up some rounds with Varget, Benchmark and IMR 8208 powders and as soon as it warms up a bit I'm going to see how they perform.

 

[long40shot]

I have an FN SPR A3G tactical rifle that I am going to try these Nosler 125 BT's in. I am going to play with it at local varmint matches where we shoot out to 400 yards. I have loaded up some rounds with Varget, Benchmark and IMR 8208 powders and as soon as it warms up a bit I'm going to see how they perform.

That sounds like fun! If none of those powders yield good results, be sure to try H4831sc. That's what I'm going to run with. I'm just going to fine tune the load now.

Matt