300 WBY velocity ???

Discussion in 'Reloading' started by remingtonman_25_06, Jun 16, 2008.

  1. remingtonman_25_06

    remingtonman_25_06 Well-Known Member

    Messages:
    2,030
    Joined:
    Jun 4, 2003
    So I got this vanguard in 300 WBY with only 24" tube. Realizing this is going to have some effect on velocity.

    Anyways, I have pretty much settled on 81g RL-22 w/180g NBT's. Its shooting .5" at 100 yards for 3 shots. Only thing is this, VELOCITY. On my cronograph, I"m only averaging 3075fps. Now I'm no rocket scientist, but this is only 300 Win Mag velocity. I see Factory 180's in 300 wby are loaded to 3250fps in 26" tube. 2" barrel dont make up for 175fps. Should I just live with the fact there only doing 3075fps and .5", or try and find a different load with a little more velocity??

    BTW, IMR-7828 was giving me 3150-3250fps but accuracy sucked with 180g SST's. Never did try NBT's w/7828. Maybe I should give that a quick try?

    Since I was getting 3150-3250fps, I know the rifle is surely capable of producing the appropriate velocity.

    Should I switch powders or just stick with what I got?
     
  2. trueblue

    trueblue Well-Known Member

    Messages:
    2,127
    Joined:
    Feb 18, 2008
    I would keep the accuracy and not worry about the velocity. If you had not cronographed that load you would be very happy with it. Just work up your drop chart using 3075 fps and be happy with .5MOA
     

  3. phorwath

    phorwath Well-Known Member

    Messages:
    4,902
    Joined:
    Apr 4, 2005
    Try the Nosler Accubonds and IMR 7828. I bet it will group them well and on top of that, you'll get the velocity you're hoping for.

    My recommendation is based on mostly poor luck with Hornady bullets, and mostly good results with Nosler BTs and Accubonds.
     
  4. Delta Hunter

    Delta Hunter Well-Known Member

    Messages:
    161
    Joined:
    Feb 18, 2002
    If you're getting close to 3100 fps with a 180 gr. bullet AND 1/2 MOA accuracy you should be very happy.

    I used to have a load for my .300 Wby Sako using H1000 that shot 165 gr. SST's into tiny little groups with regularity. Velocity was only running around 3050 fps, but it was so accurate I knew I could always count on it to shoot where I wanted it to.
     
  5. 30-06 boy

    30-06 boy Well-Known Member

    Messages:
    215
    Joined:
    Nov 17, 2005
    i had a 300 wby benchrest rifle with a 29"hart barrell..950 at muzzle,i shot 200 smk's at 3250 fps in dead of winter without pressure signs.great velocity!but shot 4"groups at 300 yards.not quite what i was looking for.78 grains of rl 22/ 200smk=1.5"groups at 300 yards=3000 fps.not as good as 3250,but i'll take the accuracy over the speed anyday.
     
  6. phorwath

    phorwath Well-Known Member

    Messages:
    4,902
    Joined:
    Apr 4, 2005
    Try the Noslers. You might as well have the speed along with the accuracy.
     
  7. .280Rem

    .280Rem Well-Known Member

    Messages:
    66
    Joined:
    Mar 25, 2008
    A novel concept I know...but add powder!
     
  8. P KUNDA

    P KUNDA Well-Known Member

    Messages:
    121
    Joined:
    Feb 2, 2008
    Be happy with what you have

    Peter
     
  9. alaska

    alaska Well-Known Member

    Messages:
    619
    Joined:
    Feb 1, 2010
    To get the most from the 300 WBY u need a 26" barrel

    Here is my load in my MK5 WBY 300 with 26"

    IMR 7828 @ 85.0
    180 Sierra Pro Hunter
    CCI 250 Mag Primer
    Hornady Brass
    3290 FPS

    86.0 gave 3300+ FPS but better groups at 85.0
     
  10. 65WSM

    65WSM Well-Known Member

    Messages:
    331
    Joined:
    Nov 24, 2007
    My experience is with a .300 Weatherby in a 1929 Model 70 that was originally a .300 H&H but was reamed to .300 Weatherby.

    I liked Reloader 22 and 200 gr Accubonds to 3030 fps (26 inch barrel) with F215 primers for elk.

    My 10 twist barrel shot better with 200gr than it did with any 180 that I tried. I could get an inch and half at 100 yards with a straight 6X Redfield. Lots of recoil. Strategically place sandbags. I took one hero to the hospital from the range with an eye damaged with a Mark V in .300 Weatherby. Even worse with a short barrel.
     
  11. alaska

    alaska Well-Known Member

    Messages:
    619
    Joined:
    Feb 1, 2010
    Ouch,,,,,
     
  12. lloydsmale

    lloydsmale Well-Known Member

    Messages:
    991
    Joined:
    Feb 5, 2012
    its a rare 300win mag that will do 3100 with a 180 using safe pressures. More like 2900 to maybe 3000. I have a vaguard with a 24 inch barrel and a mark v with a 26. Using the same loads there about 75 fps different. Maybe i have a fast 24 inch barrel or a slow 26 but i know that no animal is going to know the differnce in which one of those guns shot them. If i were you and truely got 1/2 groups id put the dies back on the shelf and go hunting.
     
  13. MontanaRifleman

    MontanaRifleman Well-Known Member

    Messages:
    6,068
    Joined:
    May 21, 2008
    180 gr factory loads for a 300 WSM range from 2950 - 3000 which I have confirmed over a chrono. No doubt the average 300 WM is going to be about 100 fps faster. A few years back I was at the range shooting 180's over RL17 in my 300 WSM and chrono was showing them about 3196 fps average. A guy next to me had a 300 WM and asked me if I would shoot his rilfe over my chrono so he could get an idea of his loads velocity. He was shooting 180's over RL22 or RL25, cant remember which but it was one of those. I shot two rounds which averaged almost exactly what my load averaged. No pressure signs from either rifle other than some somewhat flattened primers. I had a 24 3/8ths barrel and he had a 26" barrel.
     
  14. alaska

    alaska Well-Known Member

    Messages:
    619
    Joined:
    Feb 1, 2010
    The 300 WBY at 3150 FPS with 180's is the factory load that was reduced many years ago by the manufactories. My 1965 German/ JP Sauer made WBY ,has since been rebarrel by WBY a few years ago. Norma MRP is what I used back in the 70's but then was hard to get, went to H4831 for many years then IMR let the public have IMR 7828 some 15 years ago and that's been the only powder I have used since.

    I suggest get a old Speer Manual that dates back to mid 60's and you get some realistic vel numbers for handloads.

    The 300 WBY with 180's in the 26" can safely get 3300 FPS with IMR 7828 @ 86.0 with the right combination of brass and primers.

    Back in the 60's the powder of choice was IMR 4350 for the 300 WBY with the 180's loaded to 3300 FPS the pressures PSI should have been very high at that levels.......almost in danger zone! IMR 4350 still a good powder for the 300 WBY as referenced in old Speer Manual.

    The 300 Win a great cartridge have one, a Rem 700 5R tact , I shoot H1000 @ 3000 FPS with 180's.

    The 300 WSM a very efficient cart........especially with RL 17 and good accuracy.

    When you get a 300 Weatherby up to its Potential it's a very flat shooting round.....if I remember a 15" drop at 500 yards with a 4" zero at 100 yards.

    Like to fine a Win 70 Pre 64 in 300 HH that's not wore out?
     
    Last edited: Dec 14, 2013