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Doug's Message Boards :: Muzzleloader Forums :: Savage Muzzleloading Message Board :: Ballistics Test 300gr Bonded SW 2450fps

Author Topic: Ballistics Test 300gr Bonded SW 2450fps (Read 995 times)
thelefthand
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Ballistics Test 300gr Bonded SW 2450fps
« Thread Started on Mar 30, 2008, 7:36pm »
I was finally able to make it back out to do some testing today. I managed to get all my high speed testing done with the 300gr bullets that I have. My Hawk bullets are probably sitting in the mail at the post office right now, but I haven’t gone to get them so they are next. I’ve done all my 300gr testing using 75gr of Reloader #7. My goal was to get 2500fps with it. I had gotten as high as 2430fps using 73gr before, and I estimated that 75gr should get me there. It didn’t. My velocities all ranged right around 2450fps, which will have to be close enough. Today’s tests were all done in a bit of a hurry. It was a nice bright sunny day, and I don’t have sky screens for my chrony, so I wanted to get them done before the sun was high enough in the sky to mess me up. I also had to be home by noon to watch our baby so my wife could go to work This was the best day for testing that I’ve had so far. The ground was frozen most of the morning, which means that my Perma Gel blocks didn’t get all muddy. However, the sunlight did make it a bit more difficult to get the wound cavities to show up in the pictures.

Criteria:
Date: 03/30/08
Temp: 32 degrees
Bullet: 300gr Shock Wave - Bonded
Load: 75gr Reloader #7
Impact Velocity:2468fps
Penetration:22 ½"
Expanded Diameter: 3/4"
Retained Weight:228.7 gr, 76.2%

The first test of the day was the 300gr Bonded Shock Wave. Nothing super spectacular to report on here, but I think the bullet did well. The 300gr version penetrated about 4" more than the 250gr Bonded SW at 2600fps. I had to hang a tarp off the back side of the PG in order to be able to get any kind of picture of the wound cavity.

With the exception of the TMZ bullets, the other 300gr bullets (including the 300gr Bonded SW) showed a lot of “carnage” in the first several inches and then tappered off. It was a lot like the 250gr versions, but they penetrated deeper, and the bullets path stayed more true. One thing that I noticed with all of these 300gr bullets was that they all tended to go straight in the PG. The 250gr bullets (except the TMZ) tended to arc up once they expanded.

The picture below is pretty blurry (sorry), but the bullet penetrated a healthy 22 ½" with a pretty straight bullet path. It doesn’t look like the bullet really even tumbled, which probably helped it’s path stay straight. Also, there was more of the bullets trunk that had not expanded at all. Not a lot, maybe about 1/8". Both the 250gr SST and the 250gr Bonded SW expanded all the way to their base. Having a little bit of trunk left makes me “feel” like this bullet has enough to it to get the job done.

The 250gr Bonded SW did appear to expand a little bigger than the SST version, but the difference was small enough that it would have depended on exactly how a person took the measurement.

Conclusion: At 22 ½" of penetration, and a straight bullet path, I would say that the 250gr Bonded SW would be very good choice for deer. It should preform very well at any angle that doesn’t go through the rump of the deer. Since most of my 250gr SST bullets have lodged under the skin on the far side of the deer (2400fps), I would say that this bullet should exit a fair amount of the time, but shouldn’t have a LOT of steam left over when it does. Since I can accuratly drive the 300gr bullets as fast as my 250gr hunting loads, I see no reason for me not to switch to this bullet instead of my current 250gr SST. The 300gr bullets at 2450fps don’t “appear” to give up any of the carnage at the front end of the wound cavity, and yet have better penetration and higher BC. Having said that, I can make the same statement about the 300gr SST, and I haven’t even tried the .458 Remington bullets yet, or the modified versions, or the bullets that CraigF has been making, or the Hawk bullets. I’m only confirming my original suspicions. That the 250gr SST is likely NOT the ideal hunting bullet for ME, even though it has preformed very well for me.

Thanks,
Mark

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jims
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #1 on Mar 30, 2008, 7:58pm »
Nice reporting. Thanks for the efforts.
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richard
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #2 on Mar 30, 2008, 8:08pm »
Thanks for sharing this valuable information!
Richard
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broomebuck
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #3 on Mar 30, 2008, 8:13pm »
nice report ive been woundering how the bonded held up
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Kevin B.
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #4 on Mar 30, 2008, 8:19pm »
Thanks for doing this! Very good and useful info.
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tar12
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #5 on Mar 30, 2008, 10:02pm »
If you do not have any 300 grn Barnes Orginals to test,when we hook up I will have some for you to try.
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CraigF
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #6 on Mar 30, 2008, 10:06pm »
Thanks for doing this!
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chapmangleason
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #7 on Mar 31, 2008, 4:48pm »
LH,
You make mention in your post of 250 SW and SSTs. I went back 5 or 6 pages and didn't see a post from you on the 250 SW and SST results. Did you post them? If so can you put the URL in here? If you didn't post them, that is valuable info for folks, if you got some pictures. I like your thinking. I came to the exact same conclusion you did about 300g bullets because of BC and downrange energy and little difference in bullet path, but more controlled expansion and deeper penetration. I have printed your posts to PDF and I would like to place them on my Web site under "bullet penetration". Have you seen this concerning some
Parker Ballistic Extreme shot into PG?

http://tinyurl.com/33esql

Excellent info, and thanks for all your work and expense. When your done, you will KNOW, and you will know why to "go forward" with the best bullet for accuracy. Since it "holds together, expands reliably and penetrates deep".
Chap Gleason
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thelefthand
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Re: Ballistics Test 300gr Bonded SW 2450fps
« Reply #8 on Mar 31, 2008, 11:50pm »
Chap, look under the "Tips" section. There's a link there to bullet tests. At the bottom of that page are all the tests that I've done so far. Otherwise, you will have to go back into early Feb to find them. I'd go get the link, but it's late, I have to get up in a few hours for work, and the drips from my leaking roof are really starting to get to me....

And yes, feel free to post the information on your web page. No I haven't looked at your link yet, but if I can ever get the time, I would like to.

Thanks,
Mark
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