Home Forums Hunting & Shooting Hunting Rifles 7MM STW???

Are you aware of the results of lab tests of his data? Here's a reference, in particular the third paragraph:

https://www.24hourcampfire.com/ubbthreads/ubbthreads.php?ubb=showflat&Board=34&Number=1112839&Searchpage=1&Main=102804&Words=%2BLayne+Mule+Deer&topic=0&Search=true#Post1112839

There are more efficient calibers out there, but I was happy to find an unfired Sendero 7STW and rejoined the STW club.

Mathman.........thanx for the post. I have often wondered where Layne's loading were..........pressure wise!!!

5 years back I bought a nice custom 700 from a guy. He said he had around 3K in it. It included 13 or so boxes of ammo. I got it for a little over $500. He couldn't take the recoil and saw a shotgun he wanted (he is loaded)

It is a crazy good shooter, I used to use a load with 140AB's at 3400+ but changed to a milder 150 @ 3200. There is little to no noticable differnce in trajectory through 400 yrds and I think it will be easier on the BBL.

Jeff: This could be true if you obsess over a bunch of bullets,and are on a never-ending 5-year quest for the"perfect" load.But if you pick one or two good bullets,work with them,and a limited number of powders,you should be able to get to a great working load in 100 rounds or under.

Also,doing silly stuff like creating the "perfect" load for deer,and the"perfect"load for elk,and the "perfect" load for culling does to be shot under 200 yards, etc. will unnecessarily wear a barrel.The 7 STW, like the 300 Win,Weatherby,RUM's etc are high performance engines that will kill anything they are taken against with one good premium bullet.Handled this way, an STW will last longer than you think,and have enough barrel life to kill more game than you or I can afford to hunt.

Help please,I'm building a 7mmSTW,using a Weatherby Mark 5 action,the barrel is a Kreiger S/S 27in. Rem Sendero 5.5 contour,can anyone that loads with 140 gr. Triple shock bullets give me some base info on brass,primers and OAL to start with,Thanks Skeeter

I think to get your started I would Def use the Federal 215M primer if you can find them....

IMR 7828 is a pretty darned good powder to use in the STW for 140's.

That's certainly how I would handle one, and it's more or less how I've approached my magnums- find a load and stick with it. We probably disagree a little about which bullet to use, but certainly I agree about finding a bullet and using it for everything. I dunno about finding the load in 100 rounds though... that would be hitting the jackpot in every way right there.

The main thing that gets me is that I just like to shoot 'em. Especially the good ones. A really good STW would be irresistable to me; I'd be out there practicing with that bad boy!

I am told H-1000 works good too!!!

In about that same era, I went to a 30-378. It really gulps the powder too, but is scary fast and accurate.

Now that you mention it, I only have one 7mm, so maybe I should give the STW a little thought.

1minute,
Have you ever tried any 200gr slugs out of your 30-378?

Assuming you have, I would love to know your velocities.

Thanks,
Tim

Nosler has 160-gn 7mm Accubond 2nds for sale right now on the Shooters Pro Shop site...

I had a usefully accurate Sendero in 7mm STW. At the time I bought it I couldn't get bulk brass so I bought some WW .300 H&H, necked 'em down, and fire formed them. Later on I got ahold of some Remington STW brass. I had two standard loads, both used the Federal 215 primer. In the WW cases (which were short, never did grow to where I could trim them even) I used moly coated 160 grain partitions over 87 grains of H5010. In the Remington cases I used 83 grains of IMR 7828 with moly coated 120 grain ballistic tips. The fun thing about those two loads is they both shot 3/4 of an inch at 100 and 200 yards, and they both hit the same spot at 200 yards, so I didn't have to monkey with my sights, just change loads.

I figure as 7mm stuff goes, that 160 grain partition out of the STW is about as close to a go anywhere shoot anything load as you can get. It was a little spooky up close, I accidentally torched a digger squirrel with one at about 40 yards and it blew up like I'd .22-250-ed it. That made me a little concerned about what would happen on a deer at that range.

I tried 140s and 150s. The 140 partitions shot well with 7828, but I never used them as a "production" load since I had them bracketed so well. Never did get the 150s to shoot, but I didn't try too hard for the same reason.

Tom

H1000 was the best load I've ever came across for 140's.

H5010 is about as good as it gets for the STW with 160's.

rahtreelimbs,

As soon as the 8 Rem Mag came out, I ordered a reamer from JGS. JGS called it a 7X8 Rem. MaG. The Gunsmith called it the 7MM Coyle Wildcat AND THAT IS WHAT IS STAmpped on the barrel.

A couple years ago I had one made up with a 28" barrel. It was great. But, since I couldn't care less about effeciency, I had it rechambered to a RUM. I will start load development tomorrow.

I am not the least bothered by increased recoil. I make brakes in my garage that work better than anything I have purchased or seen on someone else's toys.

340Boy: No to the 200's. I'm a middle of the road person and run 180's. I was pushing them right at 3,500 fps with H870. Loads were developed in cold weather and I got pressure signs (stiff bolt lift) when I transitioned to shooting in some 95 degree heat about 3 years later. I dropped back a couple gains and have not chronographed it since. Sorry I couldn't help.

I always wanted and WTW and I always wanted a Ruger #1. Then one day I saw a #1b in STW at Sportsman's. It has lived at my house ever since.

I shoot 160 gr Sierras at 3200 fps over H1000 or RL25. Both seem to work equally well in this rifle. H870 (and the rest of the Kingsford line of powders) is just too slow for this barrel.

I have a few boxes of the 160 ab's waiting to try, but have not loaded any of them yet.

If I can not get it done with a single shot rifle and a 160 gr ab at 3200 fps muzzle velocity......well I just don't have any business trying to do it.

And the recoil really is not that bad. At least not with my 9 1/2 lb rifle and a Pachmeyer decelerator. I can still handle forty rounds from the bench in an afternoon.

Why STW when you can RUM?

I have both and prefer the stw.The RUM does produce a whopping 70fps more,but at the expense of even shorter barrel length.

TOM: I'd not be spooked by the 160 Partition. I've seen it work plenty and it is a good load,although I've heard some silly comments about its' ineffectiveness.Rubbish mostly.
I drilled one through both shoulders of a bull elk last year.It'll work on about anything.