youngun,
The author did give the expansions. I just got tired of typing.
It's the October issue. It might be still on the selves at the store. I found it interesting that the Grand Slam had a recovered frontal dia. of .7 on both impact tests. It penetrated more at low impact velocity, than High velocity. In the high velocity test, it had the penetration and cavity profile like the Nosler Ballistic Tip.
Looking over the chart overall, the conventional bullets did very well against the premium in frontal diameter and penetration in the low velocity impact test.
You had a price of $13 per 50 for Speer Grand Slams. I buy Hornady Interlocks all day locally for $18 per 100 ($9 per 50).
I just went to Midsouth Shooters Supply and this is their price on Hornady Interlock 165 gr. Spire Points.
$13.66 per 100 ct.
Grand Slams are
$14.89 per 50 ct.
Here's the site:
http://www.midsouthshooterssupply.com/
I copied and pasted the post from the other thread so it can be read without bouncing back and forth.
Timing is everything. I was just reading an article in Shooting Times Magazine on terminal performance of hunting bullets (October 2002 issue). The test used a .300 Winchester Magnum using low and high velocity impact into animal glue expansion medium AT 30 FEET. Bullets were all 180 grain. I think this will answer a few questions. Here's some of the results:
High Velocity Impact
Swift A-Frame
impact velocity = 3048 fps
Retained weight = 163 (91%)
Penetration = 12"
Winchester Fail Safe
I V = 3143 fps
Retained weight = 144 (80%)
Penetration = 19"
Barnes X
I V = 3031 fps
Retained Weight = 134 (74%)
Penetration = 18
Nosler Partition
I V = 2923 fps
Retained weight = 123 (68%)
Penetration = 15"
Hornady SP Interlock
I V = 3055 fps
Retained Weight = 104 (58%)
Penetration = 10"
Speer Grand Slam
I V = 3107 fps
Retained Weight = 104 (58%)
Penetration = 10
Sierra Spitzer BT
I V = 3081 fps
Retained Weight = 78 (43%)
Penetration = 9
--------------------------------------------------------
Low Velocity Impact
Swift A-Frame
impact velocity = 1995 fps
Retained weight = 179 (99%)
Penetration = 14"
Winchester Fail Safe
I V = 1997 fps
Retained weight = 180 (100%)
Penetration = 18"
Barnes X
I V = 1930 fps
Retained Weight = 180 (100%)
Penetration = 10
Nosler Partition
I V = 2021 fps
Retained weight = 171 (95%)
Penetration = 14"
Hornady SP Interlock
I V = 1991 fps
Retained Weight = 174 (97%)
Penetration = 12"
Speer Grand Slam
I V = 2010 fps
Retained Weight = 173 (96%)
Penetration = 13
Sierra Spitzer BT
I V = 2017 fps
Retained Weight = 175 (97%)
Penetration = 11