I have a barrel with a 0.277" bore and a 0.293" groove diameter, 14" twist.  Accurate Molds has a "125T" tapered design that should be right for the twist, but I do not know quite how to specify the band diameters.  I have never used a tapered bullet before so don't know what kind of force it will take to seat it in the barrel.  I'd like to use 5% tin to start with but am open to experienced advice on that also.  If some of you breech-seaters out there can help me out I will get a mould ordered.  I have just begun shooting this rifle and only have 287373 which casts 0.288" using linotype.  I'm going to make a bumping die to try some larger diameters.  I will be using only smokeless powder. Thanks for any input.

I might also add there is nothing wrong with breech seating a cylindrical bullet if you happen to have a mechanical seater. In my own personal opinion I have achieved better accuracy by their use over a tapered bullet design and what I prefer to use. It has some valuable advantages over a tapered designed bullet that I could share with you in a personal e-mail when time allows. Just send me a PM with your e-mail address and request should you have an intrest and I will get it off to you.

JLouis

It's a Stevens 44-1/2 28-30.  Wide grooves, narrow lands.  I wish I knew why the grooves are cut so deep.  The rifle, probably made in 1903, has seen little use so maybe that's why.