can i shoot 38 special 158 grain from a .356 win - Page 2
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Thread: can i shoot 38 special 158 grain from a .356 win



  1. #11
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    A little OT, but at one time I had a Winchester M88 in 358 Win. I made Squibb loads using a 158 gr revolver bullet and Unique. Velocity was supposed to be about 700 fps. This load was accurate at 25 yards and was very quiet.

    The 356 Win. should work nicely with this type of loading.
    Last edited by ironhead7544; 04-17-2019 at 06:06 AM.
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    Quote Originally Posted by ironhead7544 View Post
    A little OT, but at one time I had a Winchester M88 in 358 Win. I made Squibb loads using a 158 gr revolver bullet and Unique. Velocity was supposed to be about 700 fps. This load was accurate at 25 yards and was very quiet.

    The 356 Win. should work nicely with this type of loading.
    Important Safety Tip:
    When developing low speed loads like this make sure every bullet exits the barrel before chambering another round.
    ..

  3. #13
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    Quote Originally Posted by JACKTW View Post
    I understand the OP's question being in regards to bullet/projectile diameter.

    The 356WIN projectiles are common .358 projectiles (bullets).

    38SPC jacketed bullets are .357 diameter while 38SPC lead bullets are .358. Therefore, .357 diameter jacketed bullets would not be advisable.

    For plinking with the 356 cartridge, you can have Jess recommend a good diameter HCL bootlit which are cheap. He can also slug the barrel but he more than likely will know what oversize diameter would work well in your re-bored bbl, more than likely a .359 diameter bootlit.

    NOTE: A reduced load with a HCL bootlit would be better for plinking.

    Helpful?

    Jack
    According to the SAMMI standards, the 356 bore is .350 and the grooves are .358, so what I want to do is use the 38 special bullet (.375 diameter) so it seems to me it shouldn't be a problem. No?
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    Quote Originally Posted by lovin336guy View Post
    According to the SAMMI standards, the 356 bore is .350 and the grooves are .358, so what I want to do is use the 38 special bullet (.375 diameter) so it seems to me it shouldn't be a problem. No?

    The short answer is YES, if a bullet can be safely loaded in the 38 Special it can also be loaded in a .356 Winchester cartridge.

    However, you would need a totally different firearm to load with .375" bullets.
    ..

  6. #15
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    Quote Originally Posted by lovin336guy View Post
    According to the SAMMI standards, the 356 bore is .350 and the grooves are .358, so what I want to do is use the 38 special bullet (.375 diameter) so it seems to me it shouldn't be a problem. No?

    the 38 spec 357 are both 357/358 dia bullets can be used in any 35 cal rifle. I use 158 hornady in 350 mag

  7. #16
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    Yes I agree, I have two 375 win rifles created by Jesse, which is an entirely different animal, I meant to type 357 which seems to be the actual diameter of the 38 special bullet.

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    Attached are a couple of lightweights fired from a JES rebore 35X30-30. I own it now and it is an incredible shooter. It also loves cast bullets. Will run low velocities or shoot the moon over 2000fps like you wouldn't believe.
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    Quote Originally Posted by lovin336guy View Post
    According to the SAMMI standards, the 356 bore is .350 and the grooves are .358, so what I want to do is use the 38 special bullet (.375 diameter) so it seems to me it shouldn't be a problem. No?
    Certainly can give them a shot and see if their accuracy is acceptable. According to SAMMI 35 Whelen, 35 Remington and 35 Winchester is 0.349 bore and 0.357 groove. 358 diameter bullets will obturate the barrel more fully increasing accuracy.

    Many competitive shooters that shoot .308 will have custom bullets made to .309 diameter and reduce powder charge avoiding pressure spikes but they get increased accuracy.

    Keep in mind that mass produced barrels can vary between a tight to loose bore/groove. Hence manufacturers bullets being .358 diameter. For plinking, no reason to not give the .357's a shot as the accuracy may be just fine.


    Jack
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  10. #19
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    Quote Originally Posted by JACKTW View Post
    Certainly can give them a shot and see if their accuracy is acceptable. According to SAMMI 35 Whelen, 35 Remington and 35 Winchester is 0.349 bore and 0.357 groove. 358 diameter bullets will obturate the barrel more fully increasing accuracy.

    Many competitive shooters that shoot .308 will have custom bullets made to .309 diameter and reduce powder charge avoiding pressure spikes but they get increased accuracy.

    Keep in mind that mass produced barrels can vary between a tight to loose bore/groove. Hence manufacturers bullets being .358 diameter. For plinking, no reason to not give the .357's a shot as the accuracy may be just fine.


    Jack
    I can't seem to get a good read on what type of powder and how much. Would 15gr (or so) of Unique be adequate or should I use 30gr of a slower rifle powder like 4895? I just got the gun rebored by JES and don't want to damage it first time out. Or ever for that matter.

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    Quote Originally Posted by lovin336guy View Post
    I can't seem to get a good read on what type of powder and how much. Would 15gr (or so) of Unique be adequate or should I use 30gr of a slower rifle powder like 4895? I just got the gun rebored by JES and don't want to damage it first time out. Or ever for that matter.
    I checked loaddata.com and could find no loads for Unique. There was one load for a 158 gr cast gas checked bullet using 800X for about 1350 fps.

    It is well worth the money to join loaddata.com.


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