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Thread: 308 Paper Patch

  1. #121
    Boolit Grand Master 303Guy's Avatar
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    Oct 2008
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    Quote Originally Posted by geargnasher View Post
    Here's a pic of some of my paper rings. No lead whatsoever anywhere on the cases or in the barrel.



    snipped

    Gear
    Gear has basically covered the paper ring. That is exactly what I was referring to. What I have concluded is that if the patched boolit has nose resistance entering the bore, the boolit base will tend to bump up. I have experimented with reducing the nose section diameter and also shortening the boolit so as to allow the boolit to start moving before encountering the resistance. This nose resistance is I think, also responsible for boolit canting in the bore.

    My little carbine with its really worn and eroded bore, especially the throat area, shot well with a softer alloy with a two-diameter sizing of the boolit core. Unfortunately, I don't remember exactly what I was doing at the time and my notes are unclear. It won't be too difficult to figure it out since I still have some of the same boolits left, including patched ones and photos so I can see what paper I was using. It may take me a little time to figure all this out due to circumstances. I do remember that the boolit in question was a 208gr round nose with a small hollow point. I have a photo of a fired one using a light charge. The curious thing is that the patch stayed on right into the catch medium.



    Then the bore rusted and that didn't happen anymore. But now after some polishing and firing, it is smooth again.

    I'm compelled to post a picture of it. It's a great little rifle! Fun to shoot.


    Anyway, Initially, I developed a load for it by stepping up the powder charge until the patch was fully coming off at the muzzle. But only just.



    After a while, the accuracy dropped off and I found that the bore had polished up and was no longer cutting the patch through, so I had to increase the powder charge.
    Last edited by 303Guy; 08-10-2022 at 01:36 AM.
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  2. #122
    Boolit Master
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    Apr 2005
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    303Guy. Thanks for pics of the boolit and the rifle you are using. So the polished bore prevents the patch from being separated and requires a higher velocity to allow this to occur. This is an interesting concept; I have a .375 that I want to try some relatively light pp loads in using a 330 grain plain base Lyman. If they will stabilize at low velocity I will check to see if patch has separated. I sure like the blunt nose on your boolit.
    The one who hears MY word and believe’s HIM who sent ME does not enter judgment; but has passed from death (spiritual) to life (spiritual). John 5:24

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  3. #123
    Boolit Master Good Cheer's Avatar
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    Jul 2010
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    Picked up one of the.300 diameter NEI molds a while back.
    Maybe will get to try it out.

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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