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Clark · April 11, 2012, 03:13 PM

CAUTION: The following post includes loading data beyond currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.

I tried to have a controlled experiment to find the limit of 115 gr JHP Bullseye in different 380s. It was driven by case support, except the Beretta, which was limited by chamber wall thickness.

The first two pistols will be at the threshold of bulging with BuffaloBore 380 +P performance.

380 Win 115 gr JHP Bullseye .970
0) Book load Sierra 2.1 gr = 0% extra powder 0% extra powder
1) Kel-Tec P3AT case support .290" case bulge 3.6 gr = 71% extra powder
2) Ruger LCP case support .270" case bulge 3.6 gr = 71% extra powder
3) Bryco case support .125", case bulge 4.6 gr = 119% extra powder
4) Beretta 1934 case support , chamber bulge 6.5 gr= 210% extra powder
5) Browning 1903 case support, no more powder will fit 6.5 gr = 210% extra powder

April 11, 2012, 03:13 PM	#16
Clark Senior Member Join Date: December 4, 1999 Location: WA, the ever blue state Posts: 4,678	CAUTION: The following post includes loading data beyond currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information. I tried to have a controlled experiment to find the limit of 115 gr JHP Bullseye in different 380s. It was driven by case support, except the Beretta, which was limited by chamber wall thickness. The first two pistols will be at the threshold of bulging with BuffaloBore 380 +P performance. 380 Win 115 gr JHP Bullseye .970 0) Book load Sierra 2.1 gr = 0% extra powder 0% extra powder 1) Kel-Tec P3AT case support .290" case bulge 3.6 gr = 71% extra powder 2) Ruger LCP case support .270" case bulge 3.6 gr = 71% extra powder 3) Bryco case support .125", case bulge 4.6 gr = 119% extra powder 4) Beretta 1934 case support , chamber bulge 6.5 gr= 210% extra powder 5) Browning 1903 case support, no more powder will fit 6.5 gr = 210% extra powder __________________ The word 'forum" does not mean "not criticizing books." "Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist. Are we a nation of competing ideas, or a nation of forced conformity of thought?