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375/408 Banded Solids Test

 
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  #1  
Old 03-01-2009, 02:06 PM
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375/408 Banded Solids Test

As stated in another thread I have recieved my rifle from Lawtons. It is a 30 in 8 twist on an 8000 action in a Manners stock bedded by Lawton. Noel Carlson presented me with samples of prototypes of his banded solid 375 bullets. He sent me samples of two different configurations. The first is a copper 431 gr. and the other is a brass 417 gr of identical demensions. The copper by far is the most interesting of the two. I started out with 130 gr of US869. The holes were round and there was no excessive pressure. I continued to step it up and attained 2965 fps with 150 gr of US 869. At this point the bolt became a little sticky and there were slight ejector marks on the case. The cases from Jamison are first class, I only used 3 cases for the tests and have 32 loadings on each case. There have been no split necks and the pockets are still good. I encountered stability issues at the higher velocities and Noel is tweaking the design to correct this. At lower velocities accuracy is very good, 100 yd 3 shot groups were .3 to .4 moa. The most outstanding display of accuracy was a 1/4 min. three shot group at 600 yds. At 1020 yds a half min. was attained. I was having more ES than desired on velocity at the lower velocity end of the spectrum which caused vertical stringing at distance. This was caused by the 125 gr of BMG which left a huge amount of the case unfilled. The load that produced 2900 fps was 145.5 gr of US 869. This load produced ES in the single digits and showed no signs of excessive pressure. This bullet could probably be driven very close to 3100 fps from the 408 improved versions. Think of this, you have a 431 gr projectile traveling at 3100 fps with a BC ------ OK here goes----- around 1.2 +. Fowling is a non- issue. Cleaning this rifle takes less effort than any of my custom 308 barrels. I fired into a couple of different medians and the nose bends past 90 degrees. I shot one into a clay bank, when it was recovered it was a round circle with the center touching. Anyway we are on the verge of seeing something awesome, if Noel can make the tweaked version fly as well at 2900-3100 as the first ones did at slower velocities, long range shooting just got a boost.
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  #2  
Old 03-01-2009, 07:13 PM
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Re: 375/408 Banded Solids Test

very interesting, thanks for the report. can you describe in a little more detail what you mean by the bullet was a round circle with the center touching.( i'm sure nobody will notice the 1.2 B.C.)
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  #3  
Old 03-01-2009, 09:24 PM
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Re: 375/408 Banded Solids Test

Upon striking a median these bullets have a very predictable habit of the first 1/2 inch of the long thin nose folding to one side. It dont seem to take a lot of impact for the nose to bend ninety degrees to the body. When I fired it into the clay the nose completely folded back and the body also bent causing the recovered projectile to look like a doughnut with a little tiny whole in the center. Right now I cant tell you how fast this will happen when striking a game animal; however it dont seem to take much to get at least the first 1/2 inch of the nose to go ninety degrees. These bullets are copper and after they have been perfected there may be a oxygen free copper version that will deform more quickly. Just as it is I think on Mule deer and Elk this thing would be devastating. The hunting applications of this projectile is still a big question mark. We will see. I dont know if it would be legal in some states.
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Old 03-02-2009, 08:29 AM
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Re: 375/408 Banded Solids Test

Thanks for the update. It sounds like Noel is getting these bullets done right.

JeffVN
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  #5  
Old 03-02-2009, 12:12 PM
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Re: 375/408 Banded Solids Test

The 338 bullets fired from a 408 improved case traveling at 3300 - 3400 should really fold up. The cases are very good now and if an SMK can be driven to these velocities the banded solid can be driven faster. I would not be surprised to see reports of 3500+. I have not fired a 338/408 using any projectile but i am hearing some of the Improved versions are pushing the 300 SMK the 3300-3400. Run the numbers of a 1+ BC bullet driven at 3500. OUCH!!!
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  #6  
Old 03-02-2009, 09:47 PM
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Re: 375/408 Banded Solids Test

does he offer any of the 338 bullets and can we look at these any where?
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  #7  
Old 03-02-2009, 10:14 PM
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Re: 375/408 Banded Solids Test

I have a few of the 7 cal 338 bullets, as far as I know there are no rifles built to fire them yet. You can pm Noel and he will probably send you a sample or post pics. I have a 9 twist on the way and I will try them out of it. I dont expect them to stabilize in anything less than a 7 twist.
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