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I don't mind at all. Hopefully I have been clear enough (In my first post I mentioned it's over max and again when I posted over max data).


When venturing past max, my new approach is to cross...

What barrel length?

Just some clarification on my prior statement. It is specifically referring to two cases with similar volume (<10% difference) running the same powder. Correct me if I'm wrong but unless you have an...

I got round to some accuracy testing and was surprised at the results. Both were 6 shot groups at 100m. I played around with the seating depth for both powders but settled on using the same for each....

The ancient Persians would debate an idea twice: sober and drunk.

I was combining two ideas with stability. Tolerance to temperature, I think that all powders will be affected by temperature just...

I like Erik's explanations, and I've cobbled together some form of hybrid method. First off I'm assuming Erik is correct with the charge determines the combustion characteristics (ES/SD) and the...

Obligatory disclaimer: What you put in your chamber is your business. Some of these loads are over ADI's maximum.

2213SC powder 4 shots each charge:

Grains fps SD ES
46.0 2475 29.9 63
46.5...

I botched some of those numbers. Corrected below:

Grains 42.5 43 43.5 44 44.5 45 45.5
Max Spread 1.172 0.994 1.287 1.926 1.326 1.496 1.135
Height ...

I did check the group sizes at 100yards but I don't trust them entirely as the wind was up.

Grains 42.5 43 43.5 44 44.5 45 45.5
Max Spread ...

I finally found a place to do some testing.

I've only tested the 2209 so far. I stopped at 45.5gr which was doing 2842fps from a 580mm barrel with suppressor. This matches up with the ADI max load...

I had a look at how pressure and velocity increase in relation to charge weight in both the 260 and 6.5x55. Looks my initial figures where too high. Assuming a linear relationship (I know it's not...

Thanks for all the replies.



Its seems the only place to get up to data data is Alliant and Vihta Vouri. I bought the Hornady 10th edition data and was sorely disappointed. As for ADI/Hodgdon...

A modern action Sako. It's more of a question of how high is too high. I don't want to hamstring the cartridge but also don't want to get caught up chasing velocity.

That should be 50.9gr.

Hi, I just getting started loading for a 6.5x55 SE but I'm having doubts about some of the load data.

I will be using 129gr Interlock SP to start with and ADI AR2209 and AR2213SC powder.

The...