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Thread: Problems with new Ruger 300 blkout

  1. #1
    Boolit Buddy 43PU's Avatar
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    Problems with new Ruger 300 blkout

    I have the new Ruger ranch rifle in 300 blackout I am noticing that whenever I pull my boat back on a loaded magazine is a greatly scarring the bullet and the brass is anybody have any idea what’s going onClick image for larger version. 

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  2. #2
    Boolit Master gpidaho's Avatar
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    Yup. The powder coating you're using is adding to the dimension of your bullets making them too large for the chamber of that particular rifle. Gp

  3. #3
    Boolit Master gpidaho's Avatar
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    43PU I have two 300 B.O.s a Handi rifle and an AR upper, neither will accept a bullet who's nose is larger than .301 and that's tight. I either shade the noses of the bullets when I powder coat them or nose size using the Noe system. Gp

  4. #4
    Boolit Buddy
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    Does this happen when you chamber a round or just pulling bolt back across magazine?

  5. #5
    Boolit Grand Master popper's Avatar
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    Chamber jam is evident, crimp is super much. Could be a chamber loading scrape/feed problem.
    Whatever!

  6. #6
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    Texas by God's Avatar
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    I'd seat them down to the crimp groove and use a lighter crimp. As for the brass, the third lug of the bolt riding over the rounds in the mag, perhaps.

  7. #7
    Boolit Master waco's Avatar
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    Quote Originally Posted by 43PU View Post
    I have the new Ruger ranch rifle in 300 blackout I am noticing that whenever I pull my boat back on a loaded magazine is a greatly scarring the bullet and the brass is anybody have any idea what’s going onClick image for larger version. 

Name:	8C73EB40-5C17-4DEA-B6AD-30C8C885DE53.jpg 
Views:	60 
Size:	64.0 KB 
ID:	229185Click image for larger version. 

Name:	10B711CB-77EE-42C1-9E78-98AFD196F471.jpg 
Views:	66 
Size:	51.7 KB 
ID:	229186
    I'm surprised you're not getting more damage after pulling your boat back across those things......
    The fear of the Lord is the beginning of knowledge: but fools despise wisdom and instruction.
    Proverbs 1:7

  8. #8
    Boolit Buddy
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    I would not worry about the bullets, look at the ring around the case in front of the web. Almost looks like a case head separation waiting to happen.

  9. #9
    Boolit Buddy 43PU's Avatar
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    Good for noticing, but these are made from blanks!! From one of our members here!! They are awesome for the price

    Quote Originally Posted by Steelshooter View Post
    I would not worry about the bullets, look at the ring around the case in front of the web. Almost looks like a case head separation waiting to happen.

  10. #10
    Boolit Master

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    AR or Ruger mag? Either way, I'd suspect too much follower pressure. Also check the bottom of the bolt for machining marks/burrs that need to be polished out.

  11. #11
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    is the PC being removed most of the way around the first band or only in the portion pictured .. If all/most of the way around PC'ed drive band is larger than chamber
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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