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I'd think about all one could ever get out of the acp case.
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Agree, IF you stick to ACP pressure limits. If you aren't limited to those specs in the gun you are using, you can go hotter with the ACP sized case.
I don't shoot the heavier bullets in the ACP but I did have a load that pushed a 200gr JHP at a measured 998fps from a Sig P220. VERY "snappy" ran fine in the Sig, no pressure signs, but cratered primers in a 1911A1 pin gun. The guns simply aren't the same.