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Thread: .303Brit - 205gr load ?

  1. #1
    Boolit Master



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    .303Brit - 205gr load ?

    does anyone have a load recommendation for a .303 Brit with a 205 gr cast bullet which will give me a velocity of
    2000 fps....I have IMR 3031 and 4895

    thanks
    atr
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  2. #2
    Boolit Grand Master Outpost75's Avatar
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    I use 30 grains of either 4895, 4064, RL15 or Varget with 1 grain Dacron fill tucked loosely into the case neck with either Accurate 31-215B or NOE #316299 sized .316" for my Long Branch No.4 Mk1*
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  3. #3
    Boolit Master


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    I have been meaning to ask how that 215 has been working Ed. I have not seen you post anything on it.

  4. #4
    Boolit Master
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    The service velocity of the 215gn Mk6 was 2000f/s driven by around 30 to 31 gn of cordite....H4895 is pretty good approximation,IMR3031 is I think,an equivalent for the early cordite,grain for grain.Pressure was 19 tons/in2.

  5. #5
    Boolit Grand Master Outpost75's Avatar
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    Quote Originally Posted by tomme boy View Post
    I have been meaning to ask how that 215 has been working Ed. I have not seen you post anything on it.
    I've been working mostly with a bevel-based version of it, which has a 7-1/2 degree bevel 0.09" long where the GC heel would be.

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    Got promising results with 20 grains of 4064, 18 grs. of 3031, or 16 grs. of 4198, essentially a half-charge for a jacketed bullet, using 1 grain Dacron fill.

    Now have the gun apart tinkering with the bedding, then reassemble and assess grouping with WRA42 and HXP Ball to confirm that groups are no longer stringing vertically, then task is to nail down the best cast loads and post some data.
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  6. #6
    Boolit Grand Master Outpost75's Avatar
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    Quote Originally Posted by tomme boy View Post
    I have been meaning to ask how that 215 has been working Ed. I have not seen you post anything on it.
    Larry Gibson told me this was your design and that it shot well for him, which prompted me to get it. None of my shooting is past 200 yards, so I wanted to work without GCs as my Hornady GCs won't seal a throat of .316", so I didn't see the point.

    I also plan on trying your bullet in the 7.62x54R in my Tikka M39, as it seems a perfect fit for it. Plan is to find the best .303 load at 200 yards and then simply load the same charge as starting load in the M39 and adjust. I REALLY like the full throat diameter nose north of the crimp groove, it seems that the most accurate shooting cast bullets in all rifle calibers have this feature.

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    Great job on the design!
    Last edited by Outpost75; 10-20-2018 at 12:18 PM.
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  7. #7
    Boolit Master northmn's Avatar
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    A Canadian site had a tip for shooting through the larger throats of a 303. I tried it. A that time I first tried a Cream o Wheat filler but have moved on to shotgun buffer which is very light and does not form a plug like COW. It shot well with a Lee bullet that weighted 208 grains. Well enough to take a deer. You need to slightly compress the load.


    DEP

  8. #8
    Boolit Master

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    Sounds like we're running parallel .303 experiments. I just got the 314299GC and 316299GC options from NOE, but have yet to break in the molds thanks to deer season.

    I had GREAT success with the 311299 version in a .30-06 using 4064. For that bigger case, 37.9 grains generated 2040 fps. I agree with Outpost75 on the 30-grain ballpark for that bullet and general burn rate in the .303 case, and I will be breaking out either it, Varget, or 5744 for this occasion.

    I'm taking some note of the Dacron or other buffer fill concepts being put down here. My MKIII and No.4 barrels are both essentially new and tight, but the P14 may be a tad more cavernous. . .
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  9. #9
    Boolit Buddy
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    25 grains of 3031 seems to work well with my plain based 205's in my Enfields (and the Mosin)
    No chrono so no idea of velocity numbers

  10. #10
    Boolit Master RogerDat's Avatar
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    You might check out the ADI web site. They have some load data for heavy .303 British. ADI makes powder for sale under US brands so you have to look up the powder equivalent to find which US powder matches the ADI powder named in the load data.

    Rifle Load Data
    http://www.adi-powders.com.au/rifle/303-british/

    ADI powder US equivalents
    http://www.adi-powders.com.au/powder-equivalents/

    During the shortage the equivalents chart was useful to find alternative powders. Several times a popular powder was listed as equivalent to a less well know powder that would meet the same need.
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  11. #11
    Boolit Master



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    Yesterday, I tried 34 grains of IMR4895....no filler....
    mixed results at 50 yds so I am going to try again
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  12. #12
    Boolit Grand Master


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    I'd suggest 29 gr 4895 with a Dacron filler. It's what I use under a 314299 in both my Canadian 303s; Ross M10 and a C1950 Mk4 No2*.
    Larry Gibson

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  13. #13
    Any suggestions to use Imr 4064 in the 303?

  14. #14
    Boolit Grand Master Outpost75's Avatar
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    Quote Originally Posted by Kegcaissy View Post
    Any suggestions to use Imr 4064 in the 303?
    17 grains with NOE #316299PB, and 30 grs. with #31-215B with GC.
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  15. #15
    Boolit Master



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    Some very interesting ideas here!

  16. #16
    Boolit Master DonMountain's Avatar
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    Quote Originally Posted by Larry Gibson View Post
    I'd suggest 29 gr 4895 with a Dacron filler. It's what I use under a 314299 in both my Canadian 303s; Ross M10 and a C1950 Mk4 No2*.
    My grandson has killed at least a dozen deer over the years with exactly this load in a 303 British No. 4 Mk 2 rifle from 50 yards out to 140 yards. Good, accurate load for this rifle and good sights on this rifle for these 100+ yard shots. I have killed a few with it also.

  17. #17
    Quote Originally Posted by Outpost75 View Post
    17 grains with NOE #316299PB, and 30 grs. with #31-215B with GC.

    Thank you

  18. #18
    Boolit Master
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    I have a number 1 bsa with the parker hail peep sight. got it cheap. I used 311299 13 gr. unique. it has taken a few deer. I would lend it to two brothers every deer season with 4 stripper clips and orders to bring back the empty cases. end of each season the rifle and loaded and empty cases came back. along with some deer steaks.
    Last edited by bob208; Yesterday at 06:56 PM.

  19. #19
    Boolit Grand Master 303Guy's Avatar
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    Quote Originally Posted by RogerDat View Post
    You might check out the ADI web site. They have some load data for heavy .303 British. ADI makes powder for sale under US brands so you have to look up the powder equivalent to find which US powder matches the ADI powder named in the load data.

    Rifle Load Data
    http://www.adi-powders.com.au/rifle/303-british/

    ADI powder US equivalents
    http://www.adi-powders.com.au/powder-equivalents/

    During the shortage the equivalents chart was useful to find alternative powders. Several times a popular powder was listed as equivalent to a less well know powder that would meet the same need.
    In the powder equivalents, the ADI powders shown are the Hodgdon powders (not H414, H110 or BLC-2). Trailboss is made by ADI too.
    Last edited by 303Guy; 11-10-2018 at 03:13 AM.
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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check