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Location: Backcountry BC
Joined: 08/22/2007
Posts: 3
What grain to use with a 7mmSTW?

Ive been target shooting with 140 but want to use 150 or 160 for moose?

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Location: Upper Peninsula of Michigan
Joined: 01/13/2007
Posts: 368
What grain to use with a 7mmSTW?

I would reccomend the Swift Sirocco at 150 gr or a Nosler Partition, Barnes Triple Shock or Swift A-Frame at 160 Gr. Personally, my moose load in the 7Mag is the Swift A-Frame or Nosler at 175 gr.

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Location: Antelope, Ore
Joined: 03/24/2005
Posts: 3183
What grain to use with a 7mmSTW?

I've never shot a 7mm STW but thats a big case that can make great use of 175gr bullets. Acording to my Hornady manual, it will drive a 175 gr bullet 3000fps, thats nothing to sneer at. If you drop down in weight, I'd definatelly go with one of the premium bullets the Proffesor mentioned. To big a chanc of tearing up the lighter bullets at those velocities. Actually if it were me, I don't think I'd even concider anything other than the 175gr bullets in the STW.

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Location: Wa.
Joined: 03/31/2004
Posts: 1300
What grain to use with a 7mmSTW?

For myself. A spitzer bullet at 3000 to 3100 fps would be considered absolute maximum velocity to hunt big game. This would give me a mpbr of 280 to 320 yds. That's all the further I desire to shoot.
A 160 gr would be pushing that velocity. A 175 gr, as Don said, would give me plenty of kinetic energy and a perfect maximum point blank range.

The advantage, as I see it, with the larger case / faster bullet rounds is it allows the hunter to use a heavier bullet and still get a great mpbr. Heavier bullets retain energy longer.

Use the largest bullet you can that will stay within the 280 to 320 yd mpbr. Also, the one that shoots the best.

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Location: Backcountry BC
Joined: 08/22/2007
Posts: 3
What grain to use with a 7mmSTW?

Well..........I picked up a box of federal vital-shock 160 grain and 150 grain winchester cheapos an hour ago . There was nothing over 160 grain available at any of our 3 local gun stores. Any STW shells are not the easiest to find.Like I was saying I've only been using Remington core lock 140's and I'm doing very well with them @ 300 yards plus.They're half the price but I don't want to risk them on a moose. Tomorrow hopefully I can get this winchester 7mm STW dialed in at the range with these bigger leds.

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Location: Phila., PA
Joined: 03/15/2007
Posts: 171
What grain to use with a 7mmSTW?

I recently sold my 7stw.
Great cartridge...but,
as you said, a 175 factory round is of no avail.
I really liked the 160 boat tails from federal, shot great, and performed as well.
The 160 gr failsafes, though did not group as tight, plenty tight enough for hunting worked great for the bigger stuff.

I do not roll my own, I really think a 175 a frame would have been superb.

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Location: Antelope, Ore
Joined: 03/24/2005
Posts: 3183
What grain to use with a 7mmSTW?

The problem of not finding 175gr loads is most likely that people are into buying speed, even if there is better options. The company's are consumer driven, even if they cut out the best loads. Under the circumstances, I'd take up reloading.

I recall several years ago Nosler brought our the 180gr 338 bullet for the 338 Win Mag. What a waste. But people bought into it because suddenly you could drive a 180gr bullet a bit faster than you could with the 300 Win Mag that could already push the 180 gr bullet at 3100fps which puts you in the need for a premium bullet for reliability. Speed sells!

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Location: Minnesota/South Dakota
Joined: 09/06/2006
Posts: 87
What grain to use with a 7mmSTW?

Have had great luck with my STW with the 140 grainers. Seemed the 150 grain bullets didnt pattern as well but the 160's did fine. Also shoot a Mod 70. Been able to tighten the groups with a Houge stock over the OEM. Been trying to find some different loads but not many folks dealing them. No OTC 175 grainers to my knowledge. Did find this place that sells different loads for the STW as well as others. http://www.cpcartridge.com/7mmSTWP.htm
Going elk hunting with the 140 grain A-Frame this fall and have complete confidence in the bullet to drop a large framed animal. Quality bullet construction is nice to have at the increased velocities. Good luck.

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Location: Antelope, Ore
Joined: 03/24/2005
Posts: 3183
What grain to use with a 7mmSTW?

I mentioned Americans fascination with speed above. Years ago the Army did bullet wound testing at Edgewood Arsenal in Maryland. What was found was that to much speed could actually impede penetration. I don't recall why. The test results can be found in P.O. Ackley's Volume II handbook. "Gun Shot Wounds" x Col Frank T. Chamberlin. It is a very interesting article. The test medium was live hogs. They were sedated and laid on a table to shoot at at various ranges. The purpose was to study the wounds to help fix soldiers wounded in battle. Live hogs were used because they wanted info on wounds in live bodys.

Speed will certainly get a bullet there, but in fact, it sometimes is not all it is cracked up to be. Remember that these test's were run using military FMJ ammunition.

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Location: Phila., PA
Joined: 03/15/2007
Posts: 171
What grain to use with a 7mmSTW?

well at magnum speeds, a strongly constructed bulltet is a must, or they simply dissintigrate uppon impact with out proper penetration...
the a frame is doing an outstanding job, of staying together, even at magnum velocity

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