Post by sfspike on Oct 24, 2005 11:35:08 GMT -5
Wet newspaper test comparison of 250 SST and 250 gr Bonded SW.
The load was 11 gr 5744 under 63 gr H322, Harvester sabot, 250 gr Bonded SW/SST and CCIm primer. I am
not sure about the velocity of this load. But, I suspect it is around 2550 fps.
250 gr bonded SW at 50 yards.
RESULTS;
The entrance hole was about 3/4"
2 layers into the newspaper about 1/2" deep the hole was 1" in diameter.
4" deep the hole was 2-3/4"
7" deep the polymer tip was found. Hole was just over 1"
8" deep the hole was 3/4"
Not much change from there to 12"
12-1/2" deep the hole was 3/4" x 5/8"
13-1/4 deep the hole was 1" x 1/2" I think this enlargement was because the bullet stopped at 15"
Total penetration was 15"
WEIGHT RETENTION
The main part of the bullet with the jacket still attached had turned completely inside out and measured a full inch x 13/16". It still weighed 183 grains for a weight retention of 73%.
I also recovered two small fragments of lead and a very small fragment of jacket, together weighing 10 grains.
Total weight of bullet and parts recovered was 193 grains.
250 gr SST at 50 yards.
RESULTS
1" deep hole was 1" x 1-1/2"
3" deep 1-1/2 x 2"4" deep 1-3/4" x 2"
6" deep 2-1/2" x 2-1/4"
7" deep 2" x 2"
8" deep 3/4" x 3/4"
10" deep 1/2" x 3/4"
11" deep 1" x 7/8"
12" deep 1/2" x 3/4"
13" deep two separate holes both 1/2" x 1/2"
13-1/4" deep empty jacket.
14" deep 3/8" x 3/8"
Hole remained the same to the bullet remnant at 15-1/2"
Total penetration 15-1/2".
One reasonable piece of the bullet was recovered at 15-1/2". It weighed 81.2 grains. The rest of the lead must have disintegrated and/or dissolved into the paper.
The empty jacket was recovered at 13-1/4". Two other small pieces of jacket were also recovered.
I wish I would have thought to check my first test and made all the measurement at exactly the same point. But, I didn't.
The measurements of the hole in the paper are a little difficult to get exact as the edge of the hole is very ragged and there can be chewed up paper holding to the edge of the hole. But I think we now have an idea of how they compare.
DaveM
The load was 11 gr 5744 under 63 gr H322, Harvester sabot, 250 gr Bonded SW/SST and CCIm primer. I am
not sure about the velocity of this load. But, I suspect it is around 2550 fps.
250 gr bonded SW at 50 yards.
RESULTS;
The entrance hole was about 3/4"
2 layers into the newspaper about 1/2" deep the hole was 1" in diameter.
4" deep the hole was 2-3/4"
7" deep the polymer tip was found. Hole was just over 1"
8" deep the hole was 3/4"
Not much change from there to 12"
12-1/2" deep the hole was 3/4" x 5/8"
13-1/4 deep the hole was 1" x 1/2" I think this enlargement was because the bullet stopped at 15"
Total penetration was 15"
WEIGHT RETENTION
The main part of the bullet with the jacket still attached had turned completely inside out and measured a full inch x 13/16". It still weighed 183 grains for a weight retention of 73%.
I also recovered two small fragments of lead and a very small fragment of jacket, together weighing 10 grains.
Total weight of bullet and parts recovered was 193 grains.
250 gr SST at 50 yards.
RESULTS
1" deep hole was 1" x 1-1/2"
3" deep 1-1/2 x 2"4" deep 1-3/4" x 2"
6" deep 2-1/2" x 2-1/4"
7" deep 2" x 2"
8" deep 3/4" x 3/4"
10" deep 1/2" x 3/4"
11" deep 1" x 7/8"
12" deep 1/2" x 3/4"
13" deep two separate holes both 1/2" x 1/2"
13-1/4" deep empty jacket.
14" deep 3/8" x 3/8"
Hole remained the same to the bullet remnant at 15-1/2"
Total penetration 15-1/2".
One reasonable piece of the bullet was recovered at 15-1/2". It weighed 81.2 grains. The rest of the lead must have disintegrated and/or dissolved into the paper.
The empty jacket was recovered at 13-1/4". Two other small pieces of jacket were also recovered.
I wish I would have thought to check my first test and made all the measurement at exactly the same point. But, I didn't.
The measurements of the hole in the paper are a little difficult to get exact as the edge of the hole is very ragged and there can be chewed up paper holding to the edge of the hole. But I think we now have an idea of how they compare.
DaveM
