Wanted: PRIMER ADVICE

[Mike Matteson]

I for one agree with BetterBean. I load up and including 75+ grains of powder in my mag. with Fed-210's Over that and especially where you are using in the 90gr of powder area I feel Mag primers are probable needed. I don't have a rifle that require that much powder. I have used Mag primers in the pass, and didn't gain anything.

 

[Pointman]

The only caliber I use magnum primer in is my 338LM, mainly because of the heavy charges of slow during powders. Other than that, I use large rifle primer in y other calibers with the exception of my custom 25-6 which seems to refer to the CCI bench rest primers.

 

[waldosec]

Just a thought, might consider the temperature when using your LR primers. My elk hunting can be - 25 to 20F.

I would think slow powder, - 25 F, my 300 Wby, may not be a good candidate for LR.

 

[WYO300RUM]

Any thoughts on Mag. primers verses Reg, in 6.5 CM or PRC? Loading more of RL26 & H4350 but like to try H1000 too

RL26 IN 6.5 PRC works good with std. primer.

 

[Ol' Red]

That's pretty interesting! I would have thought magnums would burn hotter and produce a bigger jump in velocity.

I've seen it go both ways. I'll agree with ButterBean here too. Use the Large Rifle primers and you'll be fine.

 

[Jbumblebee]

I broke out what was left of my RL22 ( manufactured in 1997 ) since I found some new RL22 from someone here. I did another test with Hammer 160 gr in my 7mm Rem Mag. Not too bad for a powder that's twenty-five years old.

RL22 (1997)​	65.5​	3.774​	​	​	3097​	​	Magnum Primer​
​	65.5​	3.774​	​	​	3102​	​	Large Primer​
​	66​	3.774​	​	​	3141​	​	Magnum Primer​
​	66​	3.774​	​	​	3146​	​	Large Primer​
​	66.5​	3.774​	​	​	3158​	​	Magnum Primer​
​	66.5​	3.774​	​	​	3162​	​	Large Primer​

 

[WYO300RUM]

I broke out what was left of my RL22 ( manufactured in 1997 ) since I found some new RL22 from someone here. I did another test with Hammer 160 gr in my 7mm Rem Mag. Not too bad for a powder that's twenty-five years old.

RL22 (1997)​	65.5​	3.774​	​	​	3097​	​	Magnum Primer​
​	65.5​	3.774​	​	​	3102​	​	Large Primer​
​	66​	3.774​	​	​	3141​	​	Magnum Primer​
​	66​	3.774​	​	​	3146​	​	Large Primer​
​	66.5​	3.774​	​	​	3158​	​	Magnum Primer​
​	66.5​	3.774​	​	​	3162​	​	Large Primer​

I have a great load for 7 Rem mag with RL22 and a Berger 168 HVLD. I'd have to look what primer . I know it's a mag. though and Rem. case.
Interesting the mag primer is slower fps.
I want to try RL23 in 7 mag if get time.

 

[Ol' Red]

I broke out what was left of my RL22 ( manufactured in 1997 ) since I found some new RL22 from someone here. I did another test with Hammer 160 gr in my 7mm Rem Mag. Not too bad for a powder that's twenty-five years old.

RL22 (1997)​	65.5​	3.774​	​	​	3097​	​	Magnum Primer​
​	65.5​	3.774​	​	​	3102​	​	Large Primer​
​	66​	3.774​	​	​	3141​	​	Magnum Primer​
​	66​	3.774​	​	​	3146​	​	Large Primer​
​	66.5​	3.774​	​	​	3158​	​	Magnum Primer​
​	66.5​	3.774​	​	​	3162​	​	Large Primer​

I like your charting. I should put something like that together myself for side by side comparison.

 

[Mike Matteson]

Just a thought, might consider the temperature when using your LR primers. My elk hunting can be - 25 to 20F.

I would think slow powder, - 25 F, my 300 Wby, may not be a good candidate for LR.

I have use Fed-210 primer with H4350 and others in that temp range with No problems. Powder loads were in the 75gr area. I would be more concern on what type of powder I was using, and anything else.

 

[cabelasken]

When using some hammer bullets and with some powders, magnum primers can improve accuracy slightly. Just what I found.