Results 1 to 8 of 8

Thread: 284 winchester on a Saiga

  1. #1
    No Hope For Me 1biggun's Avatar
    Join Date
    Oct 2005
    Posts
    13,734
    Feedback Score
    14 (100%)

    Default 284 winchester on a Saiga

    the 284 (7mm) winchester has a rebated case and shares the bolt face with the 308 Win, it basicaly a unbelted short action magnum the case is 2.170" and the OAL is 2.800 that fits nicely in a 308win length mag well bolt thrust calculations need to be taken off the .500 od casehead. it basicaly a 7mm unbelted short mag that can be used on a 308 action. there numerious wildcats on it the most famious being the 6.5-284 that has been kicking ass at many long distance shoots. the 6.5 is said to be a barrel burrner how ever. the case can be necked up as well and a 30-284 is pretty close to a
    300 wsm.

    the loads for this round are not as hot as some of the magnum loads however and this might be doable on a 308 sagia action here are some loads that are interesting min and max loads shown. this would be a really flat shooting calibure and there are 7mm win mag barrels all over gun broker cheap that can be rechambered


    120 GR. HDY V-MAX Hodgdon Hybrid 100V .284" 2.825" 51.0 2909 39,400 CUP
    55.0C 3050
    44,700 CUP



    139 GR. HDY SST Hodgdon H414 .284" 2.915" 50.0 2792 39,800 CUP 55.0 3075 51,200 CUP

  2. #2
    Happy Camper hcpookie's Avatar
    Join Date
    Feb 2004
    Location
    Colorado Springs
    Posts
    7,702
    Feedback Score
    3 (100%)

    Default

    This is the parent case for the .450 Bushmaster and another one I can't recall offhand... possibly the .30 Remington. Chosen over .308 due to slightly larger case capacity.
    Gunco Member #10

    http://pookieweb.net


    The "original" Boltcutter Rivet Squeezers:
    http://pookieweb.net/AK/rivet/boltcutters/boltcutter.htm


    Project Pink - the Pink and Blue AK-74:
    http://pookieweb.net/pink/pink.htm

  3. #3
    No Hope For Me 1biggun's Avatar
    Join Date
    Oct 2005
    Posts
    13,734
    Feedback Score
    14 (100%)

    Default

    the new 30RAR is based of it. the is a lot more case capacity its closer to a 270 WSM than a 308 in capacity. If I can do a switch barrel deal on my Saiga I may give it a try. the the brass fits pretty good in a G3 mag if the lips are trimmed slightly.

    Im not sure what I need it for but it can be done I think. a 30 cal version would out do a 30-06 with out all the mods needed

  4. #4
    No Hope For Me 1biggun's Avatar
    Join Date
    Oct 2005
    Posts
    13,734
    Feedback Score
    14 (100%)

    Default

    284 Winchester - 56,000 PSI SAMMI

    I wonder how that compares to the 308 at 62,000PSI in bolt thrust, the the 284 has a bigger case head

  5. #5
    No Hope For Me 1biggun's Avatar
    Join Date
    Oct 2005
    Posts
    13,734
    Feedback Score
    14 (100%)

    Default

    interesting info the 6.5 rem mag is likely doable on the 308 Saiga as well. the 6.5-284 is likley the ultimat long range round that can be done a AK variant with sane pressures

    6.5mm-284 Norma and 6.5mm Remington Magnum

  6. #6
    Gunco Regular mrtank's Avatar
    Join Date
    Jan 2008
    Posts
    336
    Feedback Score
    0

    Default

    I was running some numbers, factoring in a case head separation. The 284 has close to 11% more area than the 308. So to keep the bolt thrust the same the 284 would have to be running at 11% lower pressure than the 308. I did the calculations off of brass dimensions and not chamber dimensions so that number is lower than what it should be.

    The 6.5-06 looks interesting and keeps the same bolt thrust vs chamber pressure as the .308. http://www.accuratepowder.com/data/P...Page%20232.pdf

    Would make me feel a lot better if a guy like this Stolle Panda Bolt Stress and Deflection Analysis did a stress analysis of the trunnion and bolt....

  7. #7
    No Hope For Me 1biggun's Avatar
    Join Date
    Oct 2005
    Posts
    13,734
    Feedback Score
    14 (100%)

    Default

    Well bolt thrust is bolt thrust there is a formula to compare a fully loaded SAMMI 56,000 PSI 284 win with a larger case head ID VS the 308 win 62,000 PSI bolt thrust.

    we know that the Saiga 308 will handel the 308 win at SAMMI specs. With that in mind a 284 or any other round loaded to the same bolt thrust on this action would be safe.

    I cant do the math ( some one needs to tell me what buttions to push or find a link were I can enter the numbers.) but the formula is in the my 308 conversion thread and needs to be a damm sticky. HOW COME THERE ARE NO STICKYS FOR THE AK CALIBUR CONVERSON AREA?????????????????????????????????????????????? ??????????????????

    the 6.5-06 is a good round but the shorter rounds are more effeciant and accurate. not to mention the shorter action and the easier to get to work in a AK.

    the 6.5 REM MAG is another one that is doable.

    my goal is a 1000 yards kill on a praire dog with a AK varaiant. I can do it with the 223 i have but its going to be really tough. I need more HP to make it easier besides who else has a 1000+ yard AK????? I have a 308 saiga that I will build some thing on I wont mod the bolt so Im stuck with a .470 bolt face. I can rebate brass so the WSM and Remington short mags are Options but I will not grossly excede the pressures/bolt thrust of the action. There is saftey built into every fire arm so Id consider 65,000 PSI on the Saiga about it. That allows the 22-250 BTW as well as the 6mm remington witht he same size case head. IMOO the 6.5-284, 6-284, and some of the WSM and other short mags loaded lighter are the best options for a 1000 yard shot. I like the softer recoil of the lighter bullets as well

  8. #8
    No Hope For Me 1biggun's Avatar
    Join Date
    Oct 2005
    Posts
    13,734
    Feedback Score
    14 (100%)

    Default

    I was running some numbers, factoring in a case head separation. The 284 has close to 11% more area than the 308. So to keep the bolt thrust the same the 284 would have to be running at 11% lower pressure than the 308. I did the calculations off of brass dimensions and not chamber dimensions so that number is lower than what it should be.

    The 6.5-06 looks interesting and keeps the same bolt thrust vs chamber pressure as the .308. http://www.accuratepowder.com/data/P...Page%20232.pdf

    The 260 remington is a lot easier to get to work in a AK. I looked at the 6.5-06 as a option In a long action reminton 700 I have and it would be easy to do. the 30-06 and its wild cats dont seem to have the inherited accuracy that the 308 and sibelings have for some reason.

    I like the 284 case because its a short action round and thus easly made to work on a AK ( well at least a 308 Saiga) the 6.5-285, 6.5-06. 6.5 rem mag are all over bore and all hard on barrels but its likely the cost your going to have to pay for 1000 yard performance witha light bullet.

    Personlay the 6.5-06 is likely a better deer round than the 270 but it will never likely be a factory round as the 270 is so popular.

Search tags for this page

There are currently no search engine referrals.
Click on a term to search our site for related topics.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •