F Class X Ring Comparisons: 284 Win & 25x47L

Discussion in 'Main Message Board' started by 257Blackjack, Mar 9, 2019.

  1. rafale

    rafale

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    You are right but John Whidden was shooting a record at the 2017 Southwest Nationals with a 6mm . We all searching a perfect caliber but for me
    very good barrel and bullets are the key (most great part)of long range precision.

    Michel
     
  2. LGKLAS

    LGKLAS

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    Rardoin- (not to hijack thread) what barrel length and twist rate were you running shooting the 150 SMK/6.5 ? TIA, lg
     
  3. Medic505

    Medic505 Dean Wheeler Gold $$ Contributor

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    True, he was also shooting on target twice the size of a F Class target.
     
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  4. rafale

    rafale

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    Yes but it's more stable shooting with rest and bags!
     
  5. rardoin

    rardoin Silver $$ Contributor

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    PM sent
     
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  6. Medic505

    Medic505 Dean Wheeler Gold $$ Contributor

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    This thread is about bullet performance, not stability of a shooting platform.
     
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  7. urbanrifleman

    urbanrifleman Site $$ Sponsor

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    Dave doesn't shoot f class. Not seriously. Your dataset of one is just lame. Sorry, but it is...

    Dave is literally the most successful shooter in the history of competitive centerfire rifle shooting. So he's my hero. How many Nationals have you won?
     
    Last edited: Mar 13, 2019
  8. Medic505

    Medic505 Dean Wheeler Gold $$ Contributor

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    One more than you? 20190313_091327.jpg
     
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  9. urbanrifleman

    urbanrifleman Site $$ Sponsor

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  10. Nature Boy

    Nature Boy Gold $$ Contributor

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    I first heard of this “quarter bore” revival a month or so ago when I saw the rifle that Short Action Customs built.

    It’s been intriguing me ever since.
     
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  11. 257Blackjack

    257Blackjack Site $$ Sponsor

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    RARDOIN,

    I will be buying an F-Class rig from a former Team USA member and will be testing the 25x47L and 25 WSSM with RCC Brass at 1000 extensively in the next month. I'll update with pics of vertical results.

    I won't say too much at this time, but if we see issues with vertical dispersion we have an Ace in the Hole so to speak to remediate this, and this piece of tech has been on our To Do list for about six months. We have to play with it to get it right, but the process can make shot to shot vertical improve for any bullet and is likely the unseen reason why some projectiles outperform others in waterline.

    I have been waiting for the process to be integrated into the bulk mfg line equipment but it's not there just yet.

    This testing will be a little ahead of me receiving my Oehler 89 unit but will be good timing to carry out the testing from a pure accuracy standpoint and then check TOF / BC SD / Waterline when the Oehler 89 arrives.

    I have seen the actual results from a TOF / BC SD perspective, and a pure accuracy perspective and was quite impressed and for certain groups of shooters the minor tradeoff in BC could be worth the waterline results.

    This should be in late May or June.
     
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  12. Rushty

    Rushty Silver $$ Contributor

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    Look forward to seeing your results..
     
  13. rardoin

    rardoin Silver $$ Contributor

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    An example of the above performance of the very high B.C. 150 SMK in a 5 shot test at 300yds....albeit in some way less than ideal test conditions but not severe enough to account for the spoiler. This was repeating in matches at 600/1000 and cost me points. Although this load theoretically shoots a bit inside of a .284/184gr BH/2850 fps...if this turd shows up in a match...well...you get the idea:

    [​IMG]
     
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  14. MattPeetz

    MattPeetz Silver $$ Contributor

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    So your going to cut rings on the nose of bullets
     
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  15. dougridgeore

    dougridgeore

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    In my opinion after reading thru the whole thread and after trying the latest and greatest calibers,twist rates, and new bullet designs for over 30 years.

    The one thing can’t be argued....and especially with mid range match and e targets..... the biggest diameter bullet you can legally shoot is always the one that is closest to the line..... also after shooting 4 different calibers in f open competition for over a decade... I will always stick with the calibers that I can easily source very good quality brass, that will not shoot the pockets loose in three shots. For me that’s a straight 284 Win shooting 6.5x284 Lapua brass. I think in the end it’s about how much time do you want to spend shooting versus how much time do you want to spend on brass prep?
     
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