On Fri, 06 Sep 2013 07:13:25 -0500, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:

John B. fired this volley in
:

I think that you are talking about the
dimensions of the part of the bullet that sticks out of the case,
which, other then overall length, isn't much of consideration, at
least for a .25 Browning.

No, John. What he wants to know is the overall length of the projectile
itself (showing that portion that's seated in the cartridge), so that he
can draw a bullet SEPARATELY from the cartridge, for the purposes of
showing it elsewhere in the firing path, besides just in the wheel, just in
a loaded cartridge.

Lloyd

That is going to be difficult to find as while the diameter is
constant the length of the bullet will depend on the weight and
possible the type point, although for a .25 auto it is likely that
there are few different bullets available.

So, the first question would be, what make of ammo and what bullet
weight as I find reference to several weights. 35, 45 and 50 gr. all
of which would be different length.

He might have a look at the SAMMI (sporting arms and ammunition
manufacturers institute) http://www.saami.org/ who publish a lot data
about commercially loaded ammunition. I downloaded a document from
SAMMI (205.pdf) that shows both the standard cartridge dimensions and
the standard chamber dimensions, including the standard throating.

Case diameter us shown as 0.278 and length is listed as 0.615 - .020".
Overall cartridge length is 0.860 min/.910 max.

The standard chamber is 0.2828 in diameter, and tapers to 0.2798 at
the front and is 0.0.638" in length. The cartridge appears to
headspace on a semi-rim.

I'm still a bit vague about the need for bullet length as it is never
really used in fitting a barrel or action. The action needs to be able
to handle the maximum cartridge length, the ejection port the maximum
case length, and the bullet is long gone down the barrel.

I've only seen Bullet length taken into consideration when deciding
on the rifling twist which in turn effects bullet rotation and
ultimately bullet stability.
--
Cheers,

John B.