This topic contains 5 replies, has 3 voices, and was last updated by  todd 9 months, 2 weeks ago.

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  • #69171
     todd 
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    i got this from another website. he is a excellent gunsmith.

     

    #3

    My sincerest apologies for the deletion of all the posts that were already here…

    Reason being is that I just spent a couple of hours on the phone with guys from Winchester, and with all of the new things that I have learned today, misinformation was given, and some to the point that is would open up liabilities that I would not want to be responsible for…

    So, with information that is now fact, and straight from the company who designed and developed the new 350 Legend cartridge, let’s try this again…

    Key Features of the 350 Legend Cartridge, as listed by Winchester –

    More ENERGY than 30-30 Win, 300 Blackout and 223 Remington…

    World’s fastest straight-walled cartridge…

    Approximately 20% LESS RECOIL than the 243 Winchester…

    20% more PENETRATION…

    LESS RECOIL than the 450 Bushmaster…

    Effective deer hunting ranges up to 250 yards, plus it delivers more energy than the 5.56mm, 300 Blackout or 30-30 Winchester…

    This is a new case design and is NOT made from straight walled 223 Remington brass…

    Compliant in states that allow straight wall cartridges for deer hunting…

    2019 – 350 Legend Ammunition Offerings From Winchester:

    350 Deer Season XP® 150 grain Extreme Point / 2,325 fps…

    350 Super X® 180 grain Power-Point / 2,100 fps…

    350 Hog Special 180 grain Power-Point / 2,100 fps…

    350 USA White Box 145 grain FMJ Flat Nose / 2,350 fps…

    350 Power Max Bonded® 160 grain Bonded JHP / 2,225 fps…

    350 Super Suppressed™ 265 grain Open Tip / 1,060 fps…

    The 350 Legend is rated at a s.a.a.m.i. maximum average pressure of 55,000 psi…

    BORE/GROOVE is .346/.355……….. Now knowing this information, I would NOT use .358 diameter bullets in a factory chambered rifle! Reason being is that the factory chamber is cut with a .357 diameter throat, then it tapers down to .355 (which is 9mm)…

    Factory barrel’s are 9mm and are NOT .357 or .358, but with the throating that Winchester is using, and using bullets of softer construction, those bullets can and do squeeze down in diameter to pass through the bore without issue!

    New rifles or barrels offered through me, will have the correct 9mm bore and groove diameter and will be throated specifically for. 357 diameter bullets…

    I should be able to tweak a few dimensions on the reamer to make it BETTER, since it is now s.a.a.m.i. spec’d reamer and the final dimensions have already been made…

    Again, my apologies for the deletion of the other posts. Any questions, I will take them straight to the source and make sure that any and all answers are correct before posting…

  • #69172
     Glenn 
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    IMHO, a .355 groove is/was a terrible mistake.  Why not just go with .357 or .358?

  • #69173
     Rattlesnake Charlie 
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    What Glen said.

    The world uses .358 for rifles.

    I wonder if this is using the .351 Winchester case at a higher pressure.

  • #69174
     Glenn 
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    It’s supposed to be slightly larger at the base than a 223, but I think the case head is the same.

    I have read that the throats are .357″.  I read that they are using .355″ bullets, and other places are claiming .357″ bullets.

  • #69175
     Glenn 
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    https://saami.org/wp-content/uploads/2019/01/350-Legend-Public-Introduction.pdf

    The print shows the 350 Legend with a base diameter of .390″, I believe that  the 351WSL has a base diameter of .380″

     

     

  • #69176
     todd 
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    i agree.  the .355″ is a mistake!!!!

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