bruce;
         I don't speak for the Schuetzen Meister but, IMO you are correct, the cap-lock would not be legal.     leadball

Just to add my $.02, the original intent of the ASSRA patriarchs when they started the association 50+ years ago was to provide a venue for the use of cartridge type rifles. Then as now, the folks at the National Muzzle Loading Rifle Association provided this for the front stuffers; and the ASSRA folks initially were a sort of branch from that organization.  Ever since then, there have been formal and informal events where both muzzle loaders (cap or flint) would complete against cartridge fed rifles, just not as part of the regular ASSRA events.  You are correct in assuming that a muzzle loading only rifle would not be eligible at say, a Schoyen match at Etna Green any more than you could use a high-wall on the regular line at Friendship.

Meanwhile, the breech-muzzle loader which is based on a cartridge rifle and involves only the bullet being inserted from the muzzle (and an otherwise complete cartridge inserted at the breech) should be legal as church on Sunday.  I am speaking on both of these from memory and experience, but I believe I am correct within current ASSRA and NMLRA rules.

Regards,
Green Frog

PS  Remember too that for a local match (regardless of affiliation or lack thereof) the match program can specify about anything the organizers of that match deem desirable for that match.  A lot of muzzle loader vs breech loader challenges were shot during the "Golden Age" and much later.  GF

Thanks all,

Seems as though you've confirmed my thoughts on the issue.

Bruce