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Posted By: liliysdad Learn me on the 7WSM - 06/22/19
I stumbled into the parts, including a Rock Creek barrel with less than 20rd through it, to build a 700 in 7WSM. I have no experience with the round, or any WSM. This will be a fairly lightweight hunting gun build, in a Bansner stock.

How limiting is a short action 700 receiver on COAL?

Is the Hornady brass worth a damn?

The barrel is a 10 twist, and the gun will be used for general hunting. What bullet(s) seem to be the magic pill in these things?

Absolutely any guidance is greatly appreciated. This is more a toy than anything, and if it doesnt work out, I am not really out anything substantial.

Posted By: ShortMagFan Re: Learn me on the 7WSM - 06/23/19
In my experience with 300 wsm, it’s tight in a 700 short action mag box. I’d be thinking Wyatt’s box to get some room
Posted By: Reloder28 Re: Learn me on the 7WSM - 06/23/19
The limitations are of concern to the aftermarket custom makers that they have introduced a line of intermediate actions.

Yet, my Borden 300 WSM is built on a short action & still has enough room for 155 Scenar's.
Posted By: HandgunHTR Re: Learn me on the 7WSM - 06/23/19
10 twist seems a bit slow for a 7mm barrel. With that twist you may be limited to 140 grain pills or lighter, which means you will have great velocity numbers, but if you are looking to take a long poke at something, you could be at a disadvantage.

Hornady brass has been good to me in the past, provided you don't hot-rod the rounds. In my experience I would put it equal with Winchester, just a bit higher than Remington and below Federal when comparing the big American brass manufacturers. I know some people who have had issues with primer pockets getting loose, but in most of those cases, they were running at max or very near max loads. I would suspect that had they been running Rem or Win brass the results would have been the same.
Posted By: MarineHawk Re: Learn me on the 7WSM - 06/23/19
Originally Posted by HandgunHTR
10 twist seems a bit slow for a 7mm barrel. With that twist you may be limited to 140 grain pills or lighter, which means you will have great velocity numbers, but if you are looking to take a long poke at something, you could be at a disadvantage.


I could not agree more.

I have a Wby Ultra Lightweight MkV in 7mm Wby mag with a 1-10" twist. It shoots:

* the 140gr TTSXs really well (1/2"-3/4" at 100 yds);
* won't group well with the 150gr NBTs (over 2");
* does not group well with any of numerous 160gr bullets I have tried, except for the the CorBon-loaded 160gr TSXs (those are under an inch).

I shot some Federal-loaded 160gr Trophy Bonded Tips that came out at 3,219 fps, and they grouped over 2". When I looked at the target carefully, I noticed that the bullet holes were oval-shaped, which means that the bullets were hitting the 100 yd target at an angle.

Fortunately, the rifle will do what I need with the 140gr TTSXs (3,280 fps MV) and the 160gr TSXs (3,240 fps MV), and it is nicely accurate with those, but I would much rather be able to accurately fire the 3,219 fps higher-B.C. 160gr TBTs.

I would MUCH rather have it with a 1-9: or 1-9.5" twist, like most 7mm mag rifles have.

Kind of disappointing that Wby made that rifle with too slow of a twist to use most of the bullets available for the caliber--and I tend to like heavy-for-caliber bullets. This is especially odd given that four of the six of the 7mm Wby cartridges that Wby manufactures (weighing between 150gr and 175gr) do not work in Wby's own rifles.

1-10" twist for 7mm seems debilitatingly too slow for 7mm rifles.

I love Wby rifles, but that was a mistake.

YMMV.
Posted By: peeshooter Re: Learn me on the 7WSM - 06/23/19
1-10 twist????? Can you return it?
Posted By: MarineHawk Re: Learn me on the 7WSM - 06/23/19
Originally Posted by peeshooter
1-10 twist????? Can you return it?


It works for what I need. It’s a light-weight mountain rifle, and it should do what I need out to any range I would shoot it. And I’ve got the 340 Wby for longer stuff.

Or did you mean the OP?
Posted By: lotech Re: Learn me on the 7WSM - 06/23/19
I've had two 1 in 10" Douglas barrels on a NULA 7x61 Sharpe & Hart Magnum (about the same ballistics as a 7mm Rem. Magnum) Shoots 140s to 175s very well. A Schultz & Larsen Model 60 in the same chambering with a 1 in 12" barrel shot 160s well, but never tried 175s in that one. I have a Sendero 7mm Rem. Magnum; don't know the twist rate in it, but it does well with bullets up to 160 grains. Haven't tried anything heavier.
Posted By: slm9s Re: Learn me on the 7WSM - 06/23/19
I've had three of them. Tough to beat for an all around hunting round IMO, for a handloader anyway. I've only used winchester brass, and had pretty good luck with it. I ran 160 accubonds in the two sporters, not sure they'd work in yours with its twist tho. 180 Bergers in the LR tactical rig.

Hope it you find a decent BC bullet it likes.
Posted By: liliysdad Re: Learn me on the 7WSM - 06/24/19
It's a free, nearly new barrel. It will be worth the hassle for giggles.
Posted By: Oakster Re: Learn me on the 7WSM - 06/24/19
I would build it on a Tikka.
Posted By: liliysdad Re: Learn me on the 7WSM - 06/24/19
Originally Posted by Oakster
I would build it on a Tikka.



Since I have a 700 action, stock, bottom metal, and a barrel cut for a 700....
Posted By: prairie_goat Re: Learn me on the 7WSM - 06/24/19
With a 10 twist, I'd be in 120 ttsx mode. Basically go with the 257 Weatherby mindset for it...... high speed point and shoot death ray.

Double benefit to going that route is there's no need to worry about mag box length.

Either that or sell the barrel.
Posted By: liliysdad Re: Learn me on the 7WSM - 06/24/19
I kinda considered that the issue with box length would be a self solving problem due to twist.

Oddly enough, just got a call from the dude who is building the rifle, and has the tube. We got to talking about other stuff, then I asked him about the barrel. He either told me wrong, or I heard wrong, months ago when we fist discussed it, but he assured me its a 9 twist.
Posted By: Oldelkhunter Re: Learn me on the 7WSM - 06/24/19
Originally Posted by peeshooter
1-10 twist????? Can you return it?


They have been making Mark V 7mm Weatherby rifles with a 1-10 twist since the beginning of time
Posted By: N2TRKYS Re: Learn me on the 7WSM - 06/24/19
I only shoot Partitions and Accubonds so this may be a moot point for you, but I don't have a COAL problem in my Remington Model Seven 7 SAUM.
Posted By: MarineHawk Re: Learn me on the 7WSM - 06/24/19
Originally Posted by prairie_goat
With a 10 twist, I'd be in 120 ttsx mode. Basically go with the 257 Weatherby mindset for it...... high speed point and shoot death ray.


I tried that in my rifle. But, the 120gr TTSX (per Labradar) leaves my barrel at an average velocity of 3,338 fps, and the 140gr TTSX leaves at 3,280 fps.

According to the ballistic calculator, at sea level (because of the 120gr TTSX’s lower B.C.):

* at 200 yds downrange, the 140gr/120gr TTSXs are going 2,794 fps/2,797 fps (basically, the same); and
* at 500 yds downrange, the 140gr/120gr TTSXs are going 2,166 fps/2,108 fps.

And, if both are sighted in at 1” high at 100 yards, they both are 33.5” low at 500 yards.

So, I don’t see any advantage for the 120gr TTSX. They both have very similar trajectories out to 500 yds, and the 140gr bullet is going faster after 200 yds. Might as well have the extra 20gr of bullet to hit the animal.
Posted By: MarineHawk Re: Learn me on the 7WSM - 06/24/19
Originally Posted by Oldelkhunter
They have been making Mark V 7mm Weatherby rifles with a 1-10 twist since the beginning of time


Based on my experience, that is a mistake, unless my Mk V is an aberration.
Posted By: Jordan Smith Re: Learn me on the 7WSM - 06/24/19
What bottom metal? If a 9" twist, for a lightweight build I'd go Wyatt's box and load the 180 ELD. If forced to work with a <2.9" mag box, load the 162 ELD and call it a day. The 140 TTSX at ~3300 fps has also been a fantastic 0-300 meter load for me.

Haven't used the Horn 7WSM brass, but I've used some of their other offerings, and it's generally quite good stuff. Not Alpha or Lapua quality, but about as good as the best RP/WW brass I've run across.
Posted By: Jordan Smith Re: Learn me on the 7WSM - 06/24/19
Originally Posted by MarineHawk
Originally Posted by prairie_goat
With a 10 twist, I'd be in 120 ttsx mode. Basically go with the 257 Weatherby mindset for it...... high speed point and shoot death ray.


I tried that in my rifle. But, the 120gr TTSX (per Labradar) leaves my barrel at an average velocity of 3,338 fps, and the 140gr TTSX leaves at 3,280 fps.

According to the ballistic calculator, at sea level (because of the 120gr TTSX’s lower B.C.):

* at 200 yds downrange, the 140gr/120gr TTSXs are going 2,794 fps/2,797 fps (basically, the same); and
* at 500 yds downrange, the 140gr/120gr TTSXs are going 2,166 fps/2,108 fps.

And, if both are sighted in at 1” high at 100 yards, they both are 33.5” low at 500 yards.

So, I don’t see any advantage for the 120gr TTSX. They both have very similar trajectories out to 500 yds, and the 140gr bullet is going faster after 200 yds. Might as well have the extra 20gr of bullet to hit the animal.




If you run the 120 at the same pressure as the 140, you'll see a significant velocity gain.
Posted By: MarineHawk Re: Learn me on the 7WSM - 06/24/19
Originally Posted by Jordan Smith
If you run the 120 at the same pressure as the 140, you'll see a significant velocity gain.


I figure. It just may be, in my case, that Wby loads the 140gr TTSX at higher pressure than it loads the 120gr TTSX for some reason.
Posted By: AKwolverine Re: Learn me on the 7WSM - 06/24/19
Originally Posted by liliysdad
I kinda considered that the issue with box length would be a self solving problem due to twist.

Oddly enough, just got a call from the dude who is building the rifle, and has the tube. We got to talking about other stuff, then I asked him about the barrel. He either told me wrong, or I heard wrong, months ago when we fist discussed it, but he assured me its a 9 twist.


So it IS 9 twist? And free? Even better! You must be living right
laugh
Posted By: Oldelkhunter Re: Learn me on the 7WSM - 06/24/19
Originally Posted by MarineHawk
Originally Posted by Oldelkhunter
They have been making Mark V 7mm Weatherby rifles with a 1-10 twist since the beginning of time


Based on my experience, that is a mistake, unless my Mk V is an aberration.


total agreement , I wish they would go at least 1-9 but like I said they are fixated on 1-10
Posted By: Sharpsman Re: Learn me on the 7WSM - 06/28/19
Get a 308 Winchester....and you can thank me later!!
Posted By: liliysdad Re: Learn me on the 7WSM - 06/28/19
308 is covered, thanks though.
Posted By: Beaver10 Re: Learn me on the 7WSM - 06/29/19
[Linked Image]


Something like this lightweight 7WSM with Bansner stock and 1:9 twist?

I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.

Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.

Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎
Posted By: irfubar Re: Learn me on the 7WSM - 06/29/19
Originally Posted by Beaver10
[Linked Image]


Something like this lightweight 7WSM with Bansner stock and 1:9 twist?

I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.

Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.

Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎



Dang Beav, you don't need to pillage my shootin wares, looks like you have things pretty well covered. Nice rifle....
Posted By: Cascade Re: Learn me on the 7WSM - 06/29/19
Pretty good article, from years back, on LR hunting with the 7 WSM:

https://www.6mmbr.com/gunweek064.html
Posted By: Beaver10 Re: Learn me on the 7WSM - 06/29/19
Originally Posted by irfubar
Originally Posted by Beaver10
[Linked Image]


Something like this lightweight 7WSM with Bansner stock and 1:9 twist?

I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.

Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.

Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎



Dang Beav, you don't need to pillage my shootin wares, looks like you have things pretty well covered. Nice rifle....


Thanks Fubar...It was probably yours at one time...She’s been passed around a bit before I gave her a good home...It’s a nice rifle with a lot of life left...Just a little bitchy with her bite sometimes. Grins 😎
Posted By: irfubar Re: Learn me on the 7WSM - 06/29/19
Originally Posted by Beaver10
Originally Posted by irfubar
Originally Posted by Beaver10
[Linked Image]


Something like this lightweight 7WSM with Bansner stock and 1:9 twist?

I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.

Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.

Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎



Dang Beav, you don't need to pillage my shootin wares, looks like you have things pretty well covered. Nice rifle....


Thanks Fubar...It was probably yours at one time...She’s been passed around a bit before I gave her a good home...It’s a nice rifle with a lot of life left...Just a little bitchy with her bite sometimes. Grins 😎



Is this like a shelter dog? in need of a good home........
I don't do magnums they hurt my vagina
Posted By: Oldelkhunter Re: Learn me on the 7WSM - 06/29/19
Originally Posted by Beaver10
Originally Posted by irfubar
Originally Posted by Beaver10
[Linked Image]


Something like this lightweight 7WSM with Bansner stock and 1:9 twist?

I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.

Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.

Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎



Dang Beav, you don't need to pillage my shootin wares, looks like you have things pretty well covered. Nice rifle....


Thanks Fubar...It was probably yours at one time...She’s been passed around a bit before I gave her a good home...It’s a nice rifle with a lot of life left...Just a little bitchy with her bite sometimes. Grins 😎


I bought one today at the distant gunshop I visit, it is a NIB Howa 7wsm. 350 out the door , been sittting there for a while. What are the particulars on that build? I love that Bansner stock was wondering about the barrel.
Posted By: StrayDog Re: Learn me on the 7WSM - 06/29/19
Originally Posted by Oldelkhunter
Originally Posted by peeshooter
1-10 twist????? Can you return it?


They have been making Mark V 7mm Weatherby rifles with a 1-10 twist since the beginning of time


In 1970s vintage M70 and a Savage M110 7 RM 1-10 twist the Winchester favored 160 gr and never liked 175 or 140 weights. The Savage shot all weights better than the Winchester and really liked the 175 weights.

I believe nothing beats shooting to really know.

I have a M700 in 300 WSM and the magazine is tight with factory ammo.
Posted By: Beaver10 Re: Learn me on the 7WSM - 06/29/19
Originally Posted by Oldelkhunter
Originally Posted by Beaver10
Originally Posted by irfubar
Originally Posted by Beaver10
[Linked Image]


Something like this lightweight 7WSM with Bansner stock and 1:9 twist?

I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.

Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.

Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎



Dang Beav, you don't need to pillage my shootin wares, looks like you have things pretty well covered. Nice rifle....


Thanks Fubar...It was probably yours at one time...She’s been passed around a bit before I gave her a good home...It’s a nice rifle with a lot of life left...Just a little bitchy with her bite sometimes. Grins 😎


I bought one today at the distant gunshop I visit, it is a NIB Howa 7wsm. 350 out the door , been sittting there for a while. What are the particulars on that build? I love that Bansner stock was wondering about the barrel.


Old 2006 Gunwerks build.
Broughton 24” SS fluted barrel 1:9
Milled and lightened bolt
bedded and cerakote

Good deal on your Howa! 😎
Posted By: Oldelkhunter Re: Learn me on the 7WSM - 06/29/19
Originally Posted by Beaver10
Originally Posted by Oldelkhunter
Originally Posted by Beaver10
Originally Posted by irfubar
Originally Posted by Beaver10
[Linked Image]


Something like this lightweight 7WSM with Bansner stock and 1:9 twist?

I went straight to force feeding it either 160g Nosler Accubond or the 165 Sierra GameChanger.

Either I’m sure I can get to a minimum of .05 with fps in 3k with 69g of H1000 or Retumbo... I’d have to check but IIRC 69g was almost my max. I will look at my log info tomorrow for accuracy.

Good Luck...It’s a cool lightweight rig once you figure out the bullet, powder and speed and you’ll enjoying putting some good sized furs in the dirt...😎



Dang Beav, you don't need to pillage my shootin wares, looks like you have things pretty well covered. Nice rifle....


Thanks Fubar...It was probably yours at one time...She’s been passed around a bit before I gave her a good home...It’s a nice rifle with a lot of life left...Just a little bitchy with her bite sometimes. Grins 😎


I bought one today at the distant gunshop I visit, it is a NIB Howa 7wsm. 350 out the door , been sittting there for a while. What are the particulars on that build? I love that Bansner stock was wondering about the barrel.


Old 2006 Gunwerks build.
Broughton 24” SS fluted barrel 1:9
Milled and lightened bolt
bedded and cerakote

Good deal on your Howa! 😎




I just finished cleaning it, must have been at the same dealer since it was first delivered. Putting it in the safe afterwards and going to find parts next week. I love that round
Posted By: Beaver10 Re: Learn me on the 7WSM - 06/29/19
I’m loading ammo for mine right now.
Running 69.7g H-1000 under 160g Abonds. This showed the best group on paper.
Next weekend I will chrono an average of 5 shots for speed and be done until critter season.
😎
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