close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics

Reply

7 wsm or 7 LRM

LinkBack Thread Tools Display Modes
  #22  
Unread 11-13-2013, 12:45 AM
Platinum Member
 
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 6,068
Re: 7 wsm or 7 LRM

Quote:
Originally Posted by jfseaman View Post

I have 300WSM and 300RUM, if my WSM has no problem throwing 180 class at 3000, can't see why it would be a problem in a 7mm which has a little more powder capacity.
It doesn't work that way. A smaller cal bullet (same weight) in the same case will not make the same velocity as the same weight of a larger cal bullet. It has to do with the with the size/area of the pressure column.
__________________
- Mark

You will never know how much it has cost my generation to preserve your freedom. I hope you make good use of it.
~ John Quincy Adams
Reply With Quote
  •   #23  
    Unread 11-13-2013, 01:46 AM
    Banned
     
    Join Date: Feb 2013
    Location: northeast part of earth :)
    Posts: 229
    Re: 7 wsm or 7 LRM

    Quote:
    Originally Posted by jfseaman View Post
    I thought that was "the powder is within you"

    Get what you want: 7WSM, 7LRM, 7RUM. Fast, very fast, OMG fast. Barrel torch, serious barrel torch, ultra barrel torch.

    I have 300WSM and 300RUM, if my WSM has no problem throwing 180 class at 3000, can't see why it would be a problem in a 7mm which has a little more powder capacity.

    How big a boom do you want to make, how fast do you want your projectile going on impact?
    Lol, thats too funny
    Reply With Quote

      #24  
    Unread 11-13-2013, 09:35 AM
    Platinum Member
     
    Join Date: May 2008
    Location: South of Canada and North of Wyoming
    Posts: 6,068
    Re: 7 wsm or 7 LRM

    Quote:
    Originally Posted by MontanaRifleman View Post
    It doesn't work that way. A smaller cal bullet (same weight) in the same case will not make the same velocity as the same weight of a larger cal bullet. It has to do with the with the size/area of the pressure column.
    I will add that I also have a 300 RUM and 300 WSM as well as a 7 RM which has more capacity than the 7 WSM. With H4350 I got about 3000 fps with a 180 bullet in my 24" 300 WSM, With IMR 4831, I got about 3000 fps with a 160 bullet in my 24" 7 RM. Same velocity, smaller bullet. Wtih higher performance powders like Retumbo and RL17 I was able to get about 3100 and 3150 with the 160's in the 7. With RL17 in the 300 WSM I was able to get 3200 fps plus with the 180's.

    The larger cal allows a greater flow of escaping gasses through the bore which will in turn push a bullet of the same weight faster.
    __________________
    - Mark

    You will never know how much it has cost my generation to preserve your freedom. I hope you make good use of it.
    ~ John Quincy Adams
    Reply With Quote
      #25  
    Unread 11-13-2013, 09:45 AM
    Platinum Member
     
    Join Date: Dec 2001
    Posts: 1,031
    Re: 7 wsm or 7 LRM

    Well since the OP hasn't posted since monday and he only had 7 post we may never heard from him again.
    __________________
    VFW
    Reply With Quote
      #26  
    Unread 11-13-2013, 12:05 PM
    WTB WTB is offline
    Bronze Member
     
    Join Date: Jun 2009
    Posts: 62
    Re: 7 wsm or 7 LRM

    Sorry guys I've been working and haven't had a chance to check in. I'm leaning towards the LRM. I think the LRM seems to be the best of both worlds. I'm slightly concerned with brass availability with the LRM but gunwerks seems to keep a very good supply of it in stock and as of now I can't seem to find any 7wsm brass in stock either. The price I was quoted for the LRM brass was $1.32 per piece which brings it about double the Winchester.
    They also quoted me the LRM reamer at $185 and I believe the go gauge was $50. The other option is to have them chamber the rifle for $325. Anyone have in opinions on them doing the chambering?
    Reply With Quote
      #27  
    Unread 11-13-2013, 12:17 PM
    Banned
     
    Join Date: Feb 2013
    Location: northeast part of earth :)
    Posts: 229
    Re: 7 wsm or 7 LRM

    Dude just get a 50BMG...
    Reply With Quote
      #28  
    Unread 11-13-2013, 02:47 PM
    Platinum Member
     
    Join Date: May 2008
    Location: South of Canada and North of Wyoming
    Posts: 6,068
    Re: 7 wsm or 7 LRM

    Quote:
    Originally Posted by WTB View Post
    Sorry guys I've been working and haven't had a chance to check in. I'm leaning towards the LRM. I think the LRM seems to be the best of both worlds. I'm slightly concerned with brass availability with the LRM but gunwerks seems to keep a very good supply of it in stock and as of now I can't seem to find any 7wsm brass in stock either. The price I was quoted for the LRM brass was $1.32 per piece which brings it about double the Winchester.
    They also quoted me the LRM reamer at $185 and I believe the go gauge was $50. The other option is to have them chamber the rifle for $325. Anyone have in opinions on them doing the chambering?
    I think they would do as good a job as anyone with their reamer. Are they going to crown it as well?

    As I mentioned before, Winchester has discontinued the 7 WSM and they are the only ones making the brass. I would expect it to be rare in the future. If I was going to do a 7 WSM, it would be a 7/300 WSM with Norma brass. I think the LRM brass is going to be much easier to get and although it is more expensive, it's also a higher quality brass.
    __________________
    - Mark

    You will never know how much it has cost my generation to preserve your freedom. I hope you make good use of it.
    ~ John Quincy Adams
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes



    All times are GMT -5. The time now is 03:09 PM.


    Powered by vBulletin ©2000 - 2016, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC