RepackboxLee PrecisionTitan ReloadingMidSouth Shooters Supply
Reloading UKADvertise hereInline FabricationRotoMetals2

Results 1 to 8 of 8

Thread: Bullet Diameter for 450 bore

  1. #1
    Boolit Buddy
    Join Date
    Nov 2014
    Location
    IL
    Posts
    189

    Bullet Diameter for 450 bore

    The bore on my C sharp slugs out at .4495/.450. I have a supply of Seth Cole 55 which mics at .0016 to .0018. depending on humidity I guess. I want to try a .443 slick but only seem to find .442/.444 at BACO. I will get a custom mold once I find a good candidate. It's a 34" BBL 1x18 twist 45-2 7/8. The other I'm concerned with, since its a heavy 550gr slug, is alloy. would 20-1 be better than pure lead as far as bullet distortion.
    Last edited by echo154; 10-09-2021 at 01:43 AM. Reason: spelling
    Do I have a knife....Ive got my pants on don't I.

  2. #2
    Boolit Buddy
    Join Date
    May 2012
    Location
    West central Illinois
    Posts
    314
    Depends on nose shape, 16-1 would be better, get a mould from Accurate molds to try before buying a expensive mould. I use 55y wrapping my .446 diameter money and it finishes up at .4505

  3. #3
    Boolit Grand Master Don McDowell's Avatar
    Join Date
    Jan 2008
    Location
    Hell Gap Wy
    Posts
    5,733
    Depending on how far you plan to shoot the bullet, you may want to give serious consideration to keeping the bullet length to 1.45 or a bit shorter for that 18 twist.
    Also what are you planning to do with it hunt, plink or sillhouette/target rifle matches. .444 will cover most of it ok, altho you can get more dirt diggers at 1000 yards with that diameter. .446 is a good diameter for target/silhoutte matches, but wiping between shots is the only way you'll maintain any useful accuracy.
    20-1 will work , but you may find 16-1 to give a bit better long range accuracy, as Hiwall said depending a lot on the nose profile.
    Long range rules, the rest drool.

  4. #4
    Boolit Master


    rfd's Avatar
    Join Date
    Feb 2013
    Location
    NJ via TX
    Posts
    3,876
    Perhaps a .444 slick of the appropriate length and weight for a 1:18 twist like a BACO JIM444530E, 16:1 alloy, and wrapped in Seth Cole 7# paper ... ?

    The only government I trust is the .45-70 ....

  5. #5
    Boolit Buddy
    Join Date
    Nov 2014
    Location
    IL
    Posts
    189
    Well I could only find pure lead swaged .444/550 slicks at BACO. I ordered a 100 to see. If it shoot fairly well I might get a mold a try 20-1/16-1! Nice lookin bore stuffers RFD I've got the Seth Cole just waiting on the bullets.
    Do I have a knife....Ive got my pants on don't I.

  6. #6
    Boolit Master


    rfd's Avatar
    Join Date
    Feb 2013
    Location
    NJ via TX
    Posts
    3,876
    Quote Originally Posted by echo154 View Post
    Well I could only find pure lead swaged .444/550 slicks at BACO. I ordered a 100 to see. If it shoot fairly well I might get a mold a try 20-1/16-1! Nice lookin bore stuffers RFD I've got the Seth Cole just waiting on the bullets.
    Pure lead is not the way to go, IMHO. It will also cast and size differently than if it was cast with a tin alloy. You want 1:16, trust me.

    PM me with yer shipping address and I'll send ya some of my 1:16 JIM444530E slicks and PPBs. This way you'll know if that BACO mold will work for yer rifle and if so, then you can confidently spend the $200 or so mold bucks and not be gambling.

    This is the hardest part (well, maybe) of getting into the PPB game - what mold, what diameter, what paper and thickness. It may seem daunting, but it really ain't that bad, but it might lighten yer piggy bank for no good reason.
    The only government I trust is the .45-70 ....

  7. #7
    Boolit Bub
    Join Date
    Dec 2020
    Location
    Northwestern Wisconsin
    Posts
    51
    I have to agree with those who say 16:1 is the way to go.
    I’ve been working up a long range load for a new C Sharps 45-70. I started with a well proven bullet from a borrowed Distant Thunder mold that shot very well in my Shiloh rifle. That bullet was a bit loose in the C Sharps barrel. I asked Steve Brooks to make me a mold to duplicate it in .445. He made me a beautiful mold that took only two weeks to deliver.
    The resulting bullet is 1.44” and weighs 525 when cast at 16:1. Wrapped in my KC 9# paper, it’s a nice snug fit in the C Sharps bore. I shot it pretty well in a 600 yard gong match with this past weekend but 1000 yard performance will tell the real story.
    Take rfd up on his generous offer to send you some bullets. I’m pretty sure you’ll see better results.
    JKR

  8. #8
    Boolit Buddy
    Join Date
    May 2012
    Location
    West central Illinois
    Posts
    314
    I put 10 bullets in the brass you wanted, .444 Accurate mold.try these and see if your paper works.

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