StainLess Steel MediaRotoMetals2Inline FabricationADvertise here
MidSouth Shooters SupplyTitan ReloadingGraf & SonsLee Precision

Page 3 of 3 FirstFirst 123
Results 41 to 42 of 42

Thread: Cast bullet size

  1. #41
    Boolit Master Outpost75's Avatar
    Join Date
    May 2013
    Location
    over the hill, out in the woods and far away
    Posts
    5,812
    Quote Originally Posted by Black Jaque Janaviac View Post
    Outpost,
    I'm not sure I'm understanding everything properly, but not all chambers are the same. I have Rossi '92 lever actions chambered for the straight-case .357. Their "throat" is not like the diagrams posted in this thread. They have something more like a cone. So to size for throat diameter you'd need a .375 boolit or something like that which would not do. Basically it would be a like a big .22 longrifle with boolit and case the same diameter.
    In "black powder type" rifle chambers, typically in revolver "Cowboy" calibers such as the .38 Special, .44 Magnum, .45 Colt and .45-70, in which there is no "throat" or "ball seat," before the origin of rifling, load a lead bullet of the largest diameter which provides safe case release clearance, producing a loaded cartridge diameter which measures 0.0015"-0.0020" less than a chamber cast at the case mouth. This permits a loaded cartridge to be chambered easily and extracted without firing, doing so without difficulty. Light marking of an exposed front driving band or exposed bullet ogive which does not impede easy chambering or extraction of unfired rounds does no harm.

    In my Marlin Microgroove rifles I load .360" in .38/357, .433" in .44 Magnum, .455" in .45 Colt and .460" in .45-70. Your mileage may vary.
    The ENEMY is listening.
    HE wants to know what YOU know.
    Keep it to yourself.

  2. #42
    Boolit Buddy
    Join Date
    Dec 2017
    Posts
    51
    Quote Originally Posted by Outpost75 View Post
    In "black powder type" rifle chambers, typically in revolver "Cowboy" calibers such as the .38 Special, .44 Magnum, .45 Colt and .45-70, in which there is no "throat" or "ball seat," before the origin of rifling, load a lead bullet of the largest diameter which provides safe case release clearance, producing a loaded cartridge diameter which measures 0.0015"-0.0020" less than a chamber cast at the case mouth. This permits a loaded cartridge to be chambered easily and extracted without firing, doing so without difficulty. Light marking of an exposed front driving band or exposed bullet ogive which does not impede easy chambering or extraction of unfired rounds does no harm.

    In my Marlin Microgroove rifles I load .360" in .38/357, .433" in .44 Magnum, .455" in .45 Colt and .460" in .45-70. Your mileage may vary.
    Thanks for this. I was worried my Ruger 77/357 chamber was wrong. It measures 0.3615" just ahead of the case mouth. I'm planning to get a NOE mold since they claim a diameter of 0.360" for their 38/357 bullet molds using wheel weights. The 360-154-WFN-AN1 seems like it would work well.

Page 3 of 3 FirstFirst 123

Posting Permissions

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