Hornady 180gr HTP with Bluedot?

Started by Mity2, November 28 2016 06:38:35 PM MST

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fltbed

Did anyone else ladder test (with a chronograph) their Blue Dot loads?  Mind posting them?

I can't find the note book I used back then but I remember seeing not only higher velocities but higher ES & SD numbers as well.  (along with a reduction in accuracy)

My experience with Blue Dot in other calibers tells me it gets more consistent (for Blue Dot) and accurate near max but (especially when compressed with heavy for caliber bullets) quickly shows pressure spikes above a certain point.

IIRC, I stopped my Blue Dot ladder test 10mm 180 gr loads at 11.1 gr because I started seeing those spikes pushing my ES number over 100 f.p.s.

I don't want to sound like a chicken little but please remember, Blue Dot is a shotgun powder and not held to the same manufactures consistency standards as true pistol powder.  Their are some lot to lot variations that may warrant a new load work up just to be safe.
That said, I must confess, My 10.4 gr load has resulted in almost the exact same accuracy, and chrono numbers over three different lot numbers of Blue Dot.  (one of them over 20 years older than the other two)  However, that doesn't mean the numbers would be the same above the max load.

Jeff

tommac919

If IRR, the speed increase was not linear as it got close to 11grs and slightly over ( 11gr is book max ) from a stock G20
And the most accurate loads were in the 10,2 to 10,6gr range with the 180

Pablo

Quote from: Gutsygecko on December 30 2016 02:15:12 AM MST
180 xtp will make 1360+ with 11.5 gr Blue dot in a lone wolf 6.6" bbl. (1.250 Coal)

I'm going 11.5 in the AR carbine. Will shoot tomorrow.

Ten Ten

11 grs of Bluedot with 180gr for me in my Kimber stainless 2....great trail carry load and hunting as well ;)