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6.5 Sherman Short and the 160 Matrix.

 
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  #1  
Old 07-14-2013, 02:50 PM
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6.5 Sherman Short and the 160 Matrix.

Thought I'd just start a new thread for the data and performance of the 6.5 SS with the 160 Matrix so the info stays better organized. I chose to concentrate on the 160 Matrix because it's really the only bullet right now that I'd confidently shoot a bull elk within the capability of my range finder which is in the 1000-1100 yards range.

Rifle specs; Savage model 12 with a Benchmark 5R 1-8 twist light palma contour at 28.5 inches. Set it up with the nut and no muzzle brake, it's sitting in a punished B&C varmint stock and a Vortex HS LR optic. All shooting will be of a harris style bipod with rear bag and all Chrono numbers will come from a Magneto Speed V2.

The first set of numbers I got this morning were the start of getting a load and shot from a fresh clean barrel at 200 yards just for finding my velocity and pressure range to start load development.

Loaded 3 rounds of 55gr of H1000 then one each at 56,57,58 and 59 gr with a BR-2 primer. I got some slight pressure signs at 58 and 59 but not as much as bolt drag just a little bit shiny on the case head, 55gr was mild.

Series 2 Shots: 7
Min 2862 Max 3030
Avg 2932 S-D 63
ES 168

Series Shot Speed
2 1 2862 ft/sec 55 gr
2 2 2885 ft/sec 55 gr
2 3 2875 ft/sec 55 gr
2 4 2925 ft/sec 56 gr
2 5 2953 ft/sec 57 gr
2 6 2995 ft/sec 58 gr
2 7 3030 ft/sec 59 gr
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  #2  
Old 07-15-2013, 10:39 AM
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Re: 6.5 Sherman Short and the 160 Matrix.

Man, that's great velocity for that combo. I figure the WSM will top out at 3100-ish.

It should make a fine little elk thumper
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  #3  
Old 07-15-2013, 10:49 PM
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Re: 6.5 Sherman Short and the 160 Matrix.

Quote:
Originally Posted by bigngreen View Post
Thought I'd just start a new thread for the data and performance of the 6.5 SS with the 160 Matrix so the info stays better organized. I chose to concentrate on the 160 Matrix because it's really the only bullet right now that I'd confidently shoot a bull elk within the capability of my range finder which is in the 1000-1100 yards range.

Rifle specs; Savage model 12 with a Benchmark 5R 1-8 twist light palma contour at 28.5 inches. Set it up with the nut and no muzzle brake, it's sitting in a punished B&C varmint stock and a Vortex HS LR optic. All shooting will be of a harris style bipod with rear bag and all Chrono numbers will come from a Magneto Speed V2.

The first set of numbers I got this morning were the start of getting a load and shot from a fresh clean barrel at 200 yards just for finding my velocity and pressure range to start load development.

Loaded 3 rounds of 55gr of H1000 then one each at 56,57,58 and 59 gr with a BR-2 primer. I got some slight pressure signs at 58 and 59 but not as much as bolt drag just a little bit shiny on the case head, 55gr was mild.

Series 2 Shots: 7
Min 2862 Max 3030
Avg 2932 S-D 63
ES 168

Series Shot Speed
2 1 2862 ft/sec 55 gr
2 2 2885 ft/sec 55 gr
2 3 2875 ft/sec 55 gr
2 4 2925 ft/sec 56 gr
2 5 2953 ft/sec 57 gr
2 6 2995 ft/sec 58 gr
2 7 3030 ft/sec 59 gr
Good stuff Rhian! I think I am finally going to get some time to shoot my SS pretty soon and my Magneto speed will be here tomorrow 160 grains of .264 with that kind of sectional density and velocity will be a lot harder on elk than many realize. You would have to get into the big bore mags to perform like that, other than the energy difference. All that on a light short action too. With the annealed bullets opening up at 1000 plus yards, I would be nervous if I was an elk
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Old 07-15-2013, 11:08 PM
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Re: 6.5 Sherman Short and the 160 Matrix.

Has there been expansion tests done with the annealed 160 matrix at reduced velocities? If so i must have missed it. So now once the 22-250 is burned out, the choice is 6.5SS or 6 BR.... decisions decisions.
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  #5  
Old 07-15-2013, 11:47 PM
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Re: 6.5 Sherman Short and the 160 Matrix.

Quote:
Originally Posted by barnesuser28 View Post
Has there been expansion tests done with the annealed 160 matrix at reduced velocities? If so i must have missed it. So now once the 22-250 is burned out, the choice is 6.5SS or 6 BR.... decisions decisions.
I was waiting for dad to post it up but maybe he's waiting on me Annealing made a significant improvement with the bullets opening in the first jug then hashing the second and the mushroomed bullet ending in the third at 100+gr. I think his impact velocity was around 1830fps at the lowest running a .680 bc at 2860fps. To me it looked like it would do rude things to the insides of an elk chest

I'm going to have to put in a big order for some more 160's and I need to find some more brass so I can get a good run of one load to get some serious shooting done, I'm about done screwing around and am ready to take it out to ranges that are more intersting in preperation for hunting season and get the ballistics nailed down tight.
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  #6  
Old 07-15-2013, 11:58 PM
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Join Date: Mar 2012
Location: ND
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Re: 6.5 Sherman Short and the 160 Matrix.

Very nice! How long were they annealed? Lots or little discoloration? I am going to put in an order with Marshal for 200, he said he should have some more jackets by the end of the month. Thanks for the info!
__________________

I'm 15
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE CUSTOM

"Dope that scope and tickle that giggle switch"

~Doublezranch

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/
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  #7  
Old 07-16-2013, 08:21 PM
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Join Date: Jul 2010
Location: Gillette Wy
Posts: 281
Re: 6.5 Sherman Short and the 160 Matrix.

I bought 200 of the 160's and was concerned about them opening up properly. Specific details on annealing would be greatly appreciated. Have not loaded any to try yet. Been busy w/ work and some fishing.... Too many hobbies according to my wife! Bruce
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