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Subject:
Real world performance of 5.56 FMJ vs varmit bullet. With pictures.
Crosshair
10/1/2004 3:59:59 PM
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I own a Savage 22-250 that I make handloads for. The debate of the 5.56 round on this board is quite intense. My personal belief is that the 5.56 is an inefective military round if used with FMJ bullets. However if used with rapidly expanding bullets like are used in varmit bullets, it can be deadly. I decided to do an experiment to test the performance of the "regular" FMJ bullet against a varmit bullet. I loaded 20 rounds total the only thing being different is the type of bullet used. 10 had 55 grain Hornady FMJ-BT bullets, the other 10 had 55 grain Combined Technology Balistic Silvertips. I switched bullet types every other round to eliminate any variation that might be caused by loading one type first. I used 22-250 Winchester cases that had been fired once and neck sized as well as Winchester large rifle primers. A hand weighed 38 grain charge of IMR-4320 sat underneath each bullet.
For test targets I used 2 liter bottles filled to the brim with water (I drink lots of soda). A co-worker has a gravel pit behind his house I used for shooting. There was no wind that day (rare for North Dakota) and I set up the four bottles at 100yds and climbed up the bank and set up my rifle. I fired from a sitting position. I alternated rounds and hit all four bottles on the first try. I then cronographed four rounds of each type and averaged the results.
Personaly I was unimpressed with the FMJ-BT rounds I don't think they did enough damage, even at the incredibly high velocity they where fired at. An M-16 or M-4 is going to have much less velocity and do even less damage while the balistic tips should remain effective due to their design to expand at almost any velocity. Penitration of steel plate was about equal for the two rounds, but I didn't get any pics of the plate.
Here are photo's of the results on my test.
Here is the large, un-resized version. NSFDU (Not safe for Dial-up) 682kb
Here is my rifle that I used in the test, LARGE FILE
I await your posts and will answer anything I have not already. |
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