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Thread: .355 Groove and sizing to .358 - OK?

  1. 09-03-2018, 02:34 PM #1
    Rizzo
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    .355 Groove and sizing to .358 - OK?

    My Henry 357 Mag rifle has a groove diameter of .355".
    I slugged the barrel twice and measured with a micrometer.
    I have a .358" sizing die.
    Is that OK or should I size to .357"?
    Thanks
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  2. 09-03-2018, 03:00 PM #2
    Outpost75
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    Load and shoot the largest diameter bullet which chambers without difficulty. Your .358 should be fine.
    The ENEMY is listening.
    HE wants to know what YOU know.
    Keep it to yourself.
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  3. 09-03-2018, 03:11 PM #3
    tazman
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    If they fit in the chamber, they will be fine.
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  4. 09-03-2018, 04:47 PM #4
    higgins
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    Not exactly the same situation, but Colt revolvers typically have a .355 groove diameter and chamber mouths somewhere around .358. Seems to work for them.
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  5. 09-03-2018, 06:00 PM #5
    Jniedbalski
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    I always mostly use as cast. If it fits it shoots .in my 38’s . 359 fits fine. my 3 9mm .357 works but some brass in my 9’s don’t like .3585 a little tight in high point but fine in my star bm..In my 308 axis I can go .312 but is very snug so I size my bullets from two .314 molds to .311 and they fit good also . I have about 8 lee sizing dies but I hardly ever use them any more. I mostly shoot as cast
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  6. 09-04-2018, 11:35 AM #6
    Rizzo
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    Thanks folks, I appreciate the input.
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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check