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7mm-300 Win Mag

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  #8  
Unread 02-13-2012, 05:41 PM
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Re: 7mm-300 Win Mag

Quote:
Originally Posted by Long Time Long Ranger View Post
Why not do a 7mm STW. Over the counter, cheaper, faster and a better long range cartridge.
Actually, I convinced a friend to buy an STW, telling him that he could find factory ammo, brass, and, well, that is not the case. We can't find brass anywhere nor factory ammo. He'd prefer components so he can use handloads.

Some years ago I remember seeing quite a bit of factory 7STW ammo at Bass Pro. But for the past 3-4 years, nothing in that caliber from any manufacturer. I'm hopeful, for his sake, that he has better luck than me, since he lives in CO.
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  •   #9  
    Unread 02-13-2012, 06:53 PM
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    Re: 7mm-300 Win Mag

    I have had no problem finding brass for mine or any other components. The shorter winchester case will give you a little more seating room and less than 100 fps difference from what I remember when we did the wildcats off the 300 winchester 35+ years ago. The STW just makes it simple with easily and cheaply available dies and brass without necking and fireforming. barrel life is no difference with either.
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      #10  
    Unread 02-13-2012, 07:45 PM
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    Re: 7mm-300 Win Mag

    Thanks Broz that's what I was thinking I read the hole thread you started on the first 7-300 win mag that's what gave me the idea. I do have one more question I was wondering if 1-8.5 or 1-8.7 twist would be to fast for the 162-168 because I see that Berger may come out with a 195 that would be a thumper. Also do you go with a tight neck or a no turn on your 7-300.
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      #11  
    Unread 02-13-2012, 08:03 PM
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    Re: 7mm-300 Win Mag

    Quote:
    Originally Posted by Long Range View Post
    Thanks Broz that's what I was thinking I read the hole thread you started on the first 7-300 win mag that's what gave me the idea. I do have one more question I was wondering if 1-8.5 or 1-8.7 twist would be to fast for the 162-168 because I see that Berger may come out with a 195 that would be a thumper. Also do you go with a tight neck or a no turn on your 7-300.
    Long Range, you are asking the wrong guy about little bullets, I gave them up long ago. But I think you would be fine as long as you didn't exceed the bullets capabilities as far as twist and velocity are concerned.

    I had PTG do my last reamer and it is awesome. They kinda screwed up a bit and gave it .050" more throat length than I requested but in the end it was perfect as the rifle likes the bullet .050" off the lands and was a consistant .2 and .3 MOA rifle at 300 yards. Now I am thinking the extra .050" will play right into the new 195's length.

    My reamer is a no turn neck, I have had zero issues with necking down to 7mm and the neck thickness.

    I will admit that I lost a little fire for the round with the introduction of the 230 Bergers for the 300 win. But now with this new 195 and the proposed BC's I am thinking the 7mm-300 just grabbed another gear.

    The way the 180's shoot I can't wait to try some of the 195's. My buddy took a porcupine at close to 1100 yards in some light wind with his.

    ps: I HIGHLY recommend a hart tube. The Harts have 6 lands and it induces less stress on jackets.

    Jeff
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      #12  
    Unread 02-13-2012, 08:12 PM
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    Re: 7mm-300 Win Mag

    Broz do you remember what your throat or freebore is for your reamer because I may call PTG and try to get one. Also I was looking at the Broughton 5c barrels that's what my smith recommends but I will check the harts out.
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      #13  
    Unread 02-13-2012, 08:18 PM
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    Re: 7mm-300 Win Mag

    Broz has these 7mm-300's dialed in, I've watched one of them whackn away at a 8in gong and it was looking stupid easy at close to 900 yards. Super sweet, even if it is a 7mm
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      #14  
    Unread 02-13-2012, 08:23 PM
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    Re: 7mm-300 Win Mag

    O-give of bullet, to head of case is 3.032" with a 180 Berger VLD. This leaves aprox .150" of bearing surface in the case when the bullet is touching the lands. But seated at .050" off the lands you have .200" of bearing surface in the neck. The necks on a 300 win are about .206" so this is perfect for case fill which is needed with RWS brass.

    All the rifles have shot well with some jump. The first one is .115" off the lands. This might be important if you do decide to shoot some smaller bullets.

    The Broughton 5C is a great tube too. We have a couple in 300 win that are awesome shooters. But the Harts have been really good to us lately and with the increased twist rate I think 6 lands would be better.

    Jeff
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