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Reloading Berger Bullets

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300 WSM reloading info request

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  #22  
Unread 02-06-2014, 11:25 PM
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Join Date: Feb 2010
Posts: 133
Re: 300 WSM reloading info request

My understanding is that when you hit pressure with R17, it comes pretty quick.

Anyone?
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  •   #23  
    Unread 02-07-2014, 09:01 AM
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    Join Date: Jan 2014
    Location: Central Montana
    Posts: 107
    Re: 300 WSM reloading info request

    Quote:
    Originally Posted by 16Bore View Post
    My understanding is that when you hit pressure with R17, it comes pretty quick.

    Anyone?
    My (limited) experience with RL17 shows max pressure around 1.2 grains past initial pressure signs. I try to figure all my max loads on hot days with the bullet seated to the lands.
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      #24  
    Unread 02-09-2014, 08:11 PM
    Junior Member
     
    Join Date: Feb 2014
    Posts: 19
    Re: 300 WSM reloading info request

    Went to the range today to test some seating depths.

    Shooting a tikka T3 lite 300 wsm
    180 gr accubond
    66.0 gr RL-17 (max load)
    Fully prepped win brass
    CCI 250 primers
    Coal 2.900 (max mag length)

    Shot a three shot clover leaf.
    My 300 wsm loves the RL-17 powder

    Also shot

    175 gr Bergers
    64.0 gr IMR 4350
    Fully prepped win brass
    CCI 250 primers
    Coal 3.02 (0.02 off the lands)

    And they shot very well but they were way past mag length.
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      #25  
    Unread 02-09-2014, 08:42 PM
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    Join Date: Aug 2013
    Location: Arizona
    Posts: 1,582
    Re: 300 WSM reloading info request

    Loaded 185 VLD's, Hornady brass, 215M primers with H4350 for my hunt pal. Shot sub MOA and with some seat depth tweaking went to .538 at 100 yds. Will shoot @ 300 yds next. Savage 16 stainless with bedded thumbhole stock. Not my cup of tea, but he loves it.
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      #26  
    Unread 02-10-2014, 03:31 PM
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    Join Date: Feb 2014
    Location: Pa/Maine
    Posts: 199
    Re: 300 WSM reloading info request

    Quote:
    Originally Posted by brentc View Post
    I like IMR 7828SSC, H4831SC, and RL17 in the 300 WSM. The 7828SSC is my favorite. You get near RL17 velocity without the temp swings. H4350 is an excellent powder as well.
    I just pick up a 300WSM and I was looking into what powders to try and you brought up about the temp swings for the RL17.How bad is it ?Is it from a major temp change .I have some dupont 7828 I wanted to try also.
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      #27  
    Unread 02-10-2014, 03:46 PM
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    Join Date: Feb 2014
    Location: Mesa, AZ
    Posts: 91
    Re: 300 WSM reloading info request

    I'm not sure if anyone is shooting a Browning xbolt on here but I have one and the load that I have now works really well.

    168gr Barnes TTSX
    66gr IMR4350
    I can't remember the OAL (dad has it)

    At 100yds I can cover 3 shot groups with a dime.

    I want to play with a load for the 180gr TTSX and the 200gr Accubond to see what I get. I've heard that the IMR7828ssc is pretty good for those bullets.

    Does anyone have a load for these?
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      #28  
    Unread 02-10-2014, 04:14 PM
    Bronze Member
     
    Join Date: Feb 2014
    Location: Mesa, AZ
    Posts: 91
    Re: 300 WSM reloading info request

    Quote:
    Originally Posted by brentc View Post
    I like IMR 7828SSC, H4831SC, and RL17 in the 300 WSM. The 7828SSC is my favorite. You get near RL17 velocity without the temp swings. H4350 is an excellent powder as well.
    Quote:
    Originally Posted by jfseaman View Post
    +1 what BrentC said.

    I've used all the above in my 300WSM. At the moment I going am with H4831 (not going so fast that I need the extra capacity of the SC though I did try it). All are exactly as Brent says. YMMV but I stick with the temp stable (extreme) powders most of the time.

    Do either of you have any loads for the 180gr TTSX or Accubond and a 200gr Accubond using 7828ssc or the other powders you listed? I prefer the IMR powders but I'm willing to try RL. I don't quite understand the tempurature swing issue and why it's okay or not oaky when it comes to reloading. I reload and practice in AZ but I hunt in CO so I may need to pay attention to it!
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