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Thread: Pressure with case size

  1. #1

    Pressure with case size

    So I picked up a S&W 627. Looking to load something between a Short Colt and a Long colt in length. Trying to make some loads with 0.900" brass. I I find load data for the Long Colt, I should assume higher pressure and thus reduce the charge in my shorter cases correct? I swear before I bought this gun I could find load data all over the place for these 0.900" cases. Buy the gun and the internet swallows them up!

    I am looking for a shorter cartridge to load for speed in competition as I only need to make minor PF.

    Kraken Fan #69

  2. #2

    Join Date
    Jul 2013
    The Pacific NorthWet
    Shorter cartridge is the same as a deeper seating depth so you are exactly right on higher pressure and reducing the charges in shorter cases, yes.

  3. #3
    Boolit Grand Master Outpost75's Avatar
    Join Date
    May 2013
    over the hill, out in the woods and far away
    In my Ruger India Model .380 Rimmed I use Starline .38 S&W brass and load 3.5 grains of Bullseye with the Accurate 36-159H

    This approximates .38 Special +P, about 900 fps in a 4" barrel using .38 S&W brass in a strong gun.

    ABSOLUTELY NOT for use in Webley & Scott, Enfield, Albion, Colt or S&W revolvers chambered for the .38 S&W cartridge!

    Attachment 228739Attachment 228740
    The ENEMY is listening.
    HE wants to know what YOU know.
    Keep it to yourself.

  4. #4
    Boolit Buddy
    Join Date
    Feb 2011
    SE Kentucky
    Not sure what bullet you are using, expect a RN for ease of loading. Wadcutter data would be a good start as it is fully in the case giving the 38 spcl case about the same powder capacity as your shorter cases with a RN bullet.

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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