... produces poor accuracy.


Reason: the fast pressure onset with smokeless bends the action body to one side like a banana, because of the single locking lug, and the "whip" is transferred up the barrel in addition to the longitudinal shock wave that is always generated in every system. When this whip reaches the muzzle, the resulting deviation produces lousy grouping.

Best performance in that long barrel with the single locking lug will be obtained with the slowest rifle black powder you can get - I use Swissicon No. 4 i.e 1 1/2 Fg.

This opinion is not just my own experience, but the common conclusion of the BDMP competition shooters who use these rifles. As this is the 3rd time this year that the question came up on the old Joustericon boards, I humbly submit it could be included as an FAQ.

Patrick
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