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Thread: Tight group in 6.5x55 Swedish Mauser?

  1. #1

    Tight group in 6.5x55 Swedish Mauser?

    Can anyone tell me if it's possible to load cast bullets behind tight group powder? If so can you give me a min and max powder weight to use?

    Thanks!

  2. #2
    Boolit Master




    Scharfschuetze's Avatar
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    Welcome aboard David.

    My use of Tite Group in squib rifle loads has not included the Swede round. That said, Tite Group acts very much like Bullseye powder when used in the very light (squib) rifle loads with cast bullets. I'd proceed from that standpoint.

    I've used it in very light 30 calibre rounds like the 7.5 Swiss and the 308 Winchester with velocity goals of about 1,100 fps using plain base cast bullets up to 130 grains. While case capacities on these rounds are similar to the Swede, the expansion ration is completely different due to bore size, so I won't guess as to a starting load for you.

    Don't try and get much more velocity than the sound barrier from it. It will, like Bullseye, spike your pressures pretty fast if overloaded in a rifle round and that small 6.5mm bore of the Swede may exacerbate that propensity. As you know, much care must be exercised in loading very fast pistol powders in rifle cases in order to preclude a double charge. On the positive side, ballistic uniformity and accuracy are usually very good with Tight Group in these squib applications and there is no need for a filler.

    Case shrinkage (case head to datum line) may result from any very low pressure load in rimless-bottleneck cartridges after a few firings. I segregate my squib load cases and drill the flash hole out slightly to prevent this. It helps to equalize the high pressure in the primer pocket with the lower pressure in the case hull on firing. Ballistic uniformity is often enhanced with squib loads by this also.

    Plan on raising your Swede's rear sight to 400 or 500 meters to zero with these very light loads.
    Last edited by Scharfschuetze; 03-19-2017 at 11:55 AM.
    Keep your powder dry,

    Scharf

  3. #3
    Boolit Master


    Larry Gibson's Avatar
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    What cast bullet ?

  4. #4
    Boolit Man
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    I use Titegroup with my cut down Lee cruise missile boolit (150g) in my Swede M96. Works well for my plinking needs.

  5. #5
    Boolit Master
    leebuilder's Avatar
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    Hi. So far 6.5 to 10 grains.

    163gr Noe 7gr best accuracy in M38 and shortened M38
    Traditional lube only, stilled showed yaw on paper hits.

    54gr Noe 7.3gr awesomest, like a 22 on steriods. M38, short M38 and M96.
    Traditionall lubed and PCED
    Traditional lube had the tightest groups.

    Both sized to .268

    Lower than 6.5gr, loads started to soot the necks up and blowback.

    Range 66m.

    Be safe
    Last edited by leebuilder; 03-19-2017 at 02:45 PM. Reason: Fonics
    When you read the fine print you get an education
    when you ignore the fine print you get experience

  6. #6
    Thanks! What do you drill out your primer holes too? I will separate out a number of my cases for use as squib loads. Love these Swede rifles! I have two, one sporterized and one stock. They are a lot of fun to shoot.

  7. #7
    Quote Originally Posted by leebuilder View Post
    Hi. So far 6.5 to 10 grains.

    163gr Noe 7gr best accuracy in M38 and shortened M38
    Traditional lube only, stilled showed yaw on paper hits.

    54gr Noe 7.3gr awesomest, like a 22 on steriods. M38, short M38 and M96.
    Traditionall lubed and PCED
    Traditional lube had the tightest groups.

    Both sized to .268

    Lower than 6.5gr, loads started to soot the necks up and blowback.

    Range 66m.

    Be safe
    Thanks for the data! I have a ton of titegroup so this will be the powder I will be using.

  8. #8
    Boolit Master




    Scharfschuetze's Avatar
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    What do you drill out your primer holes too?
    A number 29 drill bit works well.
    Last edited by Scharfschuetze; 03-19-2017 at 07:35 PM.
    Keep your powder dry,

    Scharf

  9. #9
    Boolit Master
    leebuilder's Avatar
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    I drilled out 20 rounds, found no gain in accuracy or blowback.
    I had no choice but to use titegroup, all we could get up here.
    They are lots of fun, well made and with hand rolled ammo they can be insanely accurate.
    Be well

    PS, most rounds after firing had enough neck tension to be reloaded without resizing.
    Last edited by leebuilder; 03-20-2017 at 07:58 PM.
    When you read the fine print you get an education
    when you ignore the fine print you get experience

  10. #10
    Thanks! I will try this out and see what I can get from these old war horses! I will have to separate half of my cases for each of my two swedes for reloading purposes and give the tight group a try in each rifle.

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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