Cartridge for Husqvarna RB sporting rifle (Black Powder Cartridge)

by Spud, Sunday, October 14, 2007, 07:08 (4554 days ago) @ Spud

Hello again.
I've just slugged the bore of the Husqvarna RB. Groove was

.662" and the bore .622". I am thinking of having a mold made up by NEI (USA). They offer a version of the 20 gauge Westley Richards Paradox slug

(often referred to as the "cotton reel bullet". I've seen them used here in Australia with rifled shotguns. Quite accurate out to 150 m. It measures

.630" and has a hollow base like a minie ball bullet. This slug will fit inside a 20 gauge case but I think there could be difficulties with a wider slug

(eg .660"). Do you think this undersized slug would expand enough with a charge of 60-70 grs FFg to fill the barrel's groove successfully?

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