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Ammo' Expansion Testing -
Results
The following set of pics are the results from
another wet pack session.
I did not get round to measuring weights after
recovery ..... but in one or two cases there would
have probably been some loss which could be inferred
from observation. To be honest, I do not place
great importance on slight weight loss .... if
the bullet is delivered intact and then loses
some portions of itself . I daresay that only
makes a wound channel more complex!
I had quite a job divesting some of the recovered
bullets of all paper fiber and so - in some instances
this will still be slightly visible.
First, let us inspect the results for Winchester
White Box 115 grain JHP's .......
Reasonable expansion
regarding the lead core but the ''petals'' from
jacket peel-back are far from uniform. I have
little doubt tho that from a wounding potential
point of view .. they would still be quite effective.
The 147 grain WWB JHP's were a different matter!
......
The one on left was a very good expansion (possibly
passed thru a particularly wet spot) and the
one on right also adequate. The center example,
well - not at all sure here. Could be it found
a ''drier'' zone in the paper and so was not
subjected to enough hydraulic effects to ''blossom''.
It appears to have travelled symmetrically however.
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Next, the Winchester
Silvertip 115 grain JHP ......
Both the one on left and one on right appeared
to have suffered some tumble as well as expanding
poorly. The center example is a good expansion,
with ragged ''petal'' formation - and some loss
of jacket on the right side. |
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The fourth Winchester
ammo used was the Ranger 147 grain JHP ........
Now
- these behaved strangely. I had to shoot my
spare in fact after adding more pack behind
the original ... due to one bullet actually
passing right thru! Thus only two examples here.
Expansion is there alright but somewhat different
to what might be expected. The left hand bullet
has peeled back it's ''petals'' in quite a spectacular
manner and would probably inflict very serious
damage. The right hand one ...... well, expansion
partial plus - it appears to have possibly suffered
some tumble.
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The final scheduled
test ammo was CCI Blazer 115 grain (Al case)
...... which has a Speer bullet seemingly identical
to what is used in Gold Dots ....
Slight
variations in expansion pattern but not much.
To all intents these appear just like I would
expect to see from Gold Dots. Good results.
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As an extra
I put some spare Gold Dot 124 grain JHP's
into the pack (my R9s carry ammo). ..........
These
have presented the classic Gold Dot reliable
expansion. Being 124 grain they show a bit
less ''peel back'' than the Blazer 115's ....
which is the same as was observed when comparing
the Gold Dot 124's with Gold Dot 115's in
the previous test program.
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This
then is the extent of test #3 with the R9 .....
yet again Gold Dots come out on top for me,
though the Blazers are well up there too. In
both cases, totally reliable through my own
R9.
A small trivia fact - I calculate that with
the 1:16 twist on the R9 that the average RPM's
of bullets is around 45,000 rpm!! Can we say
''drilling'' 
I have added some conclusions
and comments to summarize, and bring
up a few theories on certain aspects of results.
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