primer changes

[sully]

this may sound like a basic question but ive only used 215m primers with retumbo for my 30-378 wthby and i can no longer get those. is it ok to substitute 250 cci for this load?

 

[Broz]

I changed a few loads from fed 215 gm's to cci 250 M's for the same reason. Just could not get them. It all worked out good for me with no noticable difference. I would think the biggerst concern would be,... it could affect the ES of the load. So you may want to chrony a string of the new load to make sure it is with in your tolerance.

So I guess the simple answer would be, both 215 gm's and cci 250's should work fine in your 30-378 with retumbo. If you are close to max with Retumbo I would back off a couple grains for the first test.

Hope this answers the question.

Jeff

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[sully]

that is what i thought , but had to make sure. Ill back down from the top end on the first 5 string and check things out on my chrono. im still a novice reloader. no primers is no good!! thanks for the info......

 

[brentc]

You'll be safe to work up again, but I've always had the best results with E.S. and S.D. when using CCI primers.