Jim.
I think the ogive profile of that bullet has a lot to do with the accuracy as well as the DD to fit the standard GG chamber.
Dave Gullo from Buffalo arms called me one night when he started to make bullet moulds and asked me what I like to use for a PP bullet and I told him I like the original Sharps or Medford they are close and I sent him a picture of one and I said that this bullet will work close and as far as your sights will reach. Well he made some and I have one of his first .40 caliber blocks but he missed the profile a little but it still shot well. The shank diameter is a little on the small side for my .40-70 Shiloh but it's good in my tight .40-65 CPA but I will make a DD out of it to shoot in the Shiloh.
I cut the bullet below on the lathe and told Steve Brooks to make me a mould for the .44-90 BN but make it adjustable so I can see what length I can still get away with in the 19 ROT. And I also have this profile in a Swage die I had Richard Corbin (RCE) make for me.
That profile just plain shoots well and is very forgiving if you get it a little long for the bore twist. Yes it might need an extra twitch on the elevation knob over the sleek Ellipticals but it's more forgiving.
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