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Thread: SPEER 90grains poor grouping help required

  1. #1

    Question SPEER 90grains poor grouping help required

    hello all my rifle is a 243 sako 75 with 18 1/2" barrel and it won't shoot any of the 90 gr speer homeloads i've tried with various powders any better than about 1.1" groups at 100yds?
    using 85 gr sierra hpbt gamekings ,70gr nosler bt's and 65 gr v-max all produce sub 1/2groups at 100yds but the speers just won't play? i used to use 100gr fed powershok factory loads and they shot great.
    what i've tried upto now
    H414 - 41grains - 1.3" group
    H414 - 42grains - 1.8" group
    varget - 36gr - 1.4"
    varget- 35gr -1.2"
    varget - 34gr - 1.5"
    H4895 - 34gr- 1.2"
    H4895 - 35gr- 1.1"
    H4895 - 36gr - 1.6"
    RE15 - 34gr- 2"
    RE15- 35gr - 2"+
    all the above were 5 shot groups using fed brass,cci primers .i tried them at different seating depths min to max but still poor results. any help or advice would be greatly appreciated.

  2. #2
    Quote Originally Posted by reelme View Post
    hello all my rifle is a 243 sako 75 with 18 1/2" barrel and it won't shoot any of the 90 gr speer homeloads i've tried with various powders any better than about 1.1" groups at 100yds?
    using 85 gr sierra hpbt gamekings ,70gr nosler bt's and 65 gr v-max all produce sub 1/2groups at 100yds but the speers just won't play? i used to use 100gr fed powershok factory loads and they shot great.
    what i've tried upto now
    H414 - 41grains - 1.3" group
    H414 - 42grains - 1.8" group
    varget - 36gr - 1.4"
    varget- 35gr -1.2"
    varget - 34gr - 1.5"
    H4895 - 34gr- 1.2"
    H4895 - 35gr- 1.1"
    H4895 - 36gr - 1.6"
    RE15 - 34gr- 2"
    RE15- 35gr - 2"+
    all the above were 5 shot groups using fed brass,cci primers .i tried them at different seating depths min to max but still poor results. any help or advice would be greatly appreciated.
    Try H4831 or H4350, my Sako 75 likes them both with 90 grain noslers bt's, 1/2 inch or less on the day. you will need to work up the load.

    atb blue.

  3. #3
    I think it's fair to say your rifle doesn't like 90g speers! LOL.

  4. #4
    I run speer 90g sp's through my ruger M77 243 and have no probs with them, but my barrel is 22" plus I had a mate run the details through his Sierra Infinity prog and my max load is 39gr of varget, with the bullet seated 5 thou off the lands. When loaded the round looks more like a 6.5/55 because of the depth the heads are seated at. Been using this load for the past 5 years with no problems. Excellent fox round but I don't use them on deer as they fragment too much, produces similar results on foxes as 87gr V-max.

    The other thing I do is not to measure the overall length from tip to the base of the case, I use a comparator to measure base to ogive


    Ade

    P.S
    As PKL said it could just be a case of that particular head not suiting your rifle as no two rifles, even same make and model will shoot the same.
    Last edited by British Shooting Services; 18-03-2012 at 23:50. Reason: extra comment

  5. #5
    cheers blue will try them out,
    PKL i don't think she does, but i've tried so many powders its now a challenge to beat the gun

  6. #6
    Quote Originally Posted by 270wsm View Post
    I run speer 90g sp's through my ruger M77 243 and have no probs with them, but my barrel is 22" plus I had a mate run the details through his Sierra Infinity prog and my max load is 39gr of varget, with the bullet seated 5 thou off the lands. When loaded the round looks more like a 6.5/55 because of the depth the heads are seated at. Been using this load for the past 5 years with no problems. Excellent fox round but I don't use them on deer as they fragment too much, produces similar results on foxes as 87gr V-max.

    The other thing I do is not to measure the overall length from tip to the base of the case, I use a comparator to measure base to ogive


    Ade
    cheers for that i'll try a little bit more varget but don't really want to go to hot with the loads

  7. #7
    i have exactly the same gun, i use 100grain speer, reloader 19, 40.4 grains never had a problem with groupings.
    cheers
    richard

  8. #8
    get closer to the target

  9. #9
    I had a Sako 75 in 243 until about a week ago. During the time I reloaded for it, I failed to get the following bullet powder combinations to work:

    95 gr SST s with RL-19 without success.
    105 gr Speer with N165 without success.
    108 gr Bergers with N165 without success.

    I was using the powders and the knowledge I had at the time. Sometimes I had reasonable results, but was unable to repeat them consistently. I might try other powders if I was trying again tomorrow.

    Regards JCS

  10. #10
    Quote Originally Posted by PKL View Post
    I think it's fair to say your rifle doesn't like 90g speers! LOL.
    +1 i think its time to find another bullet! My rifle hates 139gn SSTs.. took me a whole box to figure it out! :doh!

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