Vern
32 Cal.
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- Aug 29, 2006
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Güten Tag, Kirrmeister, I also have the Investarms 54 and use Hornady Great Plains .54cal 390gr HB-HP (hollow base-hollow point) bullets (#6629). This round has a ballistic coefficient of .15. According to Goex, with 80 gr of their FFFg, you'll have a muzzle velocity of 1460fps for 1145 ft lbs (1552 joules). At 50 yds, you'll have 1058fps and 969ft lbs (1313 joules) and at 100 yds you'll have 989fps and 847 ft lbs (1148 joules). I was able to get sub-2" groups while seated at 100 yds with this load.
The .530 230gr ball has a coefficient of about .067 if you want to figure that. Goex says that you'll get 1460 fps at the muzzle for a patched ball with the 80gr 3F load.
Here's a good calculator [url] http://www.biggameinfo.com/index.aspx?page=/balcalc.ascx[/url]
The .530 230gr ball has a coefficient of about .067 if you want to figure that. Goex says that you'll get 1460 fps at the muzzle for a patched ball with the 80gr 3F load.
Here's a good calculator [url] http://www.biggameinfo.com/index.aspx?page=/balcalc.ascx[/url]
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