Change of primers

[thefoxandthe.243]

Hi,
I knew I was getting short of CCI large rifle primers, but after prepping my brass I've discovered I only have 17 CCI primers left.

I bought 500 magtech primers a while back when primers were hard to come by.

Am I likely to notice a difference in my accuracy by swapping to the magtechs?

Should I expect to work up a load again with them?

Would I be safe enough to reload with the same powder charge weight as I usually use and fire a few test rounds?

The rounds in question are 58gr v max in .243 with 41.8gr N140.

Thanks

 

[billgatese30]

Unless you are borderline max pressure then the change should be negligible however shoot a few post change and look for a shift in POI or pressure signs to be sure.

 

[SunnyDays]

You might find a higher failure -to-go-bang rate with Magtech, but it seems to vary from batch to batch.

 

[thefoxandthe.243]

Unless you are borderline max pressure then the change should be negligible however shoot a few post change and look for a shift in POI or pressure signs to be sure.

My load is 1.4gr under the recommended maximum load, I'll probably just load a few up and see how they go

 

[thefoxandthe.243]

You might find a higher failure -to-go-bang rate with Magtech, but it seems to vary from batch to batch.

I did read that somewhere, but from memory, I think it was more the small rifle primers that were affected

 

[hw101]

I’ve had problems with one batch of magtecs but the other has been perfect thus far.
In 7-08, 150 grain eldx and n550 I get about 40fps less with cci than magtec.

 

[billgatese30]

I did read that somewhere, but from memory, I think it was more the small rifle primers that were affected

Ive had a few large rifle magtechs fail to fire, but hoping its just a batch issue as its one of the few types I can get hold of

 

[thefoxandthe.243]

I’ve had problems with one batch of magtecs but the other has been perfect thus far.
In 7-08, 150 grain eldx and n550 I get about 40fps less with cci than magtec.

What velocity are you getting with the 7mm-08 and what's your charge weight?
I'm just looking at working up a load for mine with the 150gr ELDX too

 

[thefoxandthe.243]

Ive had a few large rifle magtechs fail to fire, but hoping its just a batch issue as its one of the few types I can get hold of

Fingers crossed I'll have no failures

 

[hw101]

2800fps, 44.5 grain in a 20 inch barrel.
Clearly I worked up to this.

 

[kenbro]

I did read that somewhere, but from memory, I think it was more the small rifle primers that were affected

I’ve used 850 Magtech SRP in last few months with no failures.
Kb.

 

[trickie]

I used all my CCI as well, now have a couple of 000, Magtec shot maybe 250 upto naw and had 2 rtf with my 6.5 CM.

The strange this, I have had the same failure rate on my 6.5 Creedmoore LRP and .223 REM SRP