Here's couple loads that I used to blowout the taper of some .303 British blanks that I turned into full length 30-40.   I've previously worked up to the amount of Blue Dot I use in these loads.  I seated the bullets, Hornady 150gr FMJBTs, to the crimp groove and used the Lee factory crimp die, most of the cases were right at max length, and I used a CCI#34 primer.  These were shot out of my parkerized Krag.  It has the tightest chamber and bore of all my rifles.  I swapped it over into the stock that has the free floated barrel channel too.  The 860 is burning good, no black smoke cloud, no muzzle flash, no unburned grains of powder, but pressure is still Krag safe.  I've no idea how fast the 49-50gr of powder gets the 150gr bullet going, wish I had a chronograph.  The load does a nice job of blowing out the more tapered .303 case.  I saved enough of them to shoot a match, I'll have to scope the parked Krag again!  Oh, the two in the white were the first couple shots, I had to walk it down to the X.

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