Primers: how much difference do they make?

[Mystic Precision]

Interesting hypothesis.

Jerry

 

[max-x]

When I get to shoot up north in the summer, it is 95% prone from a bipod.

Hey another load of bentonite just came in. Stop playing with that rifle and get back in the Otter.

Love and kisses ;-)

 

[northern skies]

hahaha!

We'll be sitting in the warehouse 'til the ice is out, trigger.

 

[kombayotch]

So, what could I gain from switching to BR2's or fed 215's, or something else? I know they are more expensive and harder to find, but could I see a worthwhile gain in consistency? Are they also more consistent over temperature extremes?

Here are some temperature tests I ran where two loads, with only different primers were run at the same time. Magnum, vs standard primer did not make a significant difference in temperature stability.

 

[NormB]

How did you get the 175 deg (F)? data point. Oven?

NormB