| Posted: Sat Sep 12th, 2009 10:24 PM |
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tayhot
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I have a 7mm rem Mag that shoots the Fedreal Barnes TSX bullets extremly well. I would like to reload my own cartridges to fine tune the accuracy first, speed second.Those are in order of importance to me.
I want to try the 150 gr Barnes TSX and the tipped TSX. I think I will use IMR 4381 powder inside of Remmington casings. My question for yall is what primers shoul I consider and am I starting off in the right direction? Also, I have heard that bullet seating is pretty important with these bullets can you confirm?
Any help would be appreciated.
Taylor
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| Posted: Sat Sep 12th, 2009 11:41 PM |
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300 SAUM
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Here's a link to the BARNES reloading section of their website with their recommendations for you to sort through:
http://www.barnesbullets.com/images/7mmRemingtonMagnumWeb.pdf
They do suggest you have a specific starting seating depth off the barrel lands for their projectiles.
Here's what they have to tell you:
Because TSX Bullets are all-copper, they have different pressure characteristics compared to conventional jacketed bullets. In our lab, we have experienced best pressures and accuracy when TSX Bullets are seated .030″ – .070″ off the lands (the grooves or rifling in a barrel.) The majority of the time, we’ve seen optimum accuracy when bullets are seated .050″ off the lands, so start there. Then move backward or forward in .005″ – .010″ increments to find the “sweet spot” for your particular rifle.
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| Posted: Sun Sep 13th, 2009 12:11 AM |
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tayhot
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Thanks 300.
Is there a tool that helps measures this distance? What is it called?
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| Posted: Sun Sep 13th, 2009 02:12 AM |
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DKA
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My most accurate load comes with Nosler 160 Gr Ballistic tip and Hodgdon 1000.
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| Posted: Sun Sep 13th, 2009 03:01 AM |
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DesertMarine
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Hornady makes the Hornady Lock-n-Load OAL Gauge and Sinclair International has the Sinclair Seating Depth Gauge. I use the Hornady tool which you can get at Midway and at Sinclair International, under measuring tools.
I used to shoot the Barnes X 150 gr in 270 and the recommended distance from the lands was 0.050", so still the same for Barnes copper bullets. I was going to use them on elk but decided to go with 300 Win Mag instead. I am sure they would have worked. Haven't tried the TSX bullets. I use Hornady Interlock bullets for all my hunting, elk and deer and they work great.
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| Posted: Sun Sep 13th, 2009 03:17 AM |
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tayhot
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I have used the X bullets on a few deer, an elk, and 3 bears. I recovered 3 bullets and they all performed as marketed. So I am a beleiver of the product. Last year I shot a large bear from less than 10 yards and the bullet still opend up perfectly (even on a thin skinned bear)
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| Posted: Sun Sep 13th, 2009 03:46 AM |
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stevekoozer
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I had problems getting them to shoot in a 30-06 tried various oal's and no dice tried crimping on the last groove and now I have a great 150 tsx load. In everything else I have loaded for somewhere between .30-.50 off the lands usually yeilds more than acceptable results.
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| Posted: Sun Sep 13th, 2009 04:08 AM |
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Rockydog
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Steve, Do you mean .030 - .050? .50 would be 1/2" off the lands. RD
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| Posted: Fri Sep 18th, 2009 01:03 AM |
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ccw
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If this is a hunting load, there are two other considerations to make.
1. The Barnes all copper is longer for the same weight compared to copper jacketed lead because of lower density.
2. If you are loading your rounds out of a magazine, there is a limit to OAL because of magazine constraints. You may get the bullet set just right for spacing from the lands and find that it will hang up in the rifle magazine.
3. Most recipes assume you are using the bullet specified. If you substitute Barnes and keep the same OAL specified in the copper over lead recipe, the chamber pressures can jump up because at the same OAL and weight more of the barnes bullet tail will stick back in the case, reducing effective volume.
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