I fired a couple of 250gr Hornady SPs using the same load of 63 grains CFE223. It wasn't run over a chronograph, but was accurate and, as you say, "stiff", but not bad!

Thanks for that info!

Also, thanks to jwp457. I'd guessed it was a little faster, but your tests show much less pressure than a similar load using PP2000MR.

Tomorrow's blog gives an update on my .35 Whelen firing the 225 AccuBonds over 66 grains of CFE 223.

Bob
www.bigbores.ca

Last edited by CZ550; 04/22/22.
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