smdub

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    smdub replied to the thread 510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length).

    Ok, * buying the barrel blank from jacklikesbigbore * ordered 400pcs of 338 Norma from AR (already have a bunch of pulled M33...

    Yesterday at 10:27 PM
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    smdub reacted to 45-90's post in the thread 510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length) with Like.

    I used 300 Norma and 338 Lapua brass, the 338 Norma will work. I had no trouble sizing it.

    Monday at 8:41 AM
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    smdub reacted to 45-90's post in the thread 510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length) with Like.

    I'm getting ready to go shooting the 375 Raptor... But this is about the 510 Whisper. Some pictures to help ya out. Step 1 I cut them...

    Monday at 8:41 AM
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    smdub replied to the thread 510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length).

    Thank you. Your posts in this thread have been invaluable. That is exactly the reason I'm considering 338 Norma as the donor -...

    Monday at 8:41 AM
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    smdub reacted to Flexible Tangerine Sprite's post in the thread Suppressors 338 Arc / 338 Spectre Sound Testing (Decibel results)?? with Like.

    I have a 338 ARC and a 300 BO and an 8.6 BO and the one thing I can weigh in on is the sound level difference between what powders you...

    Jul 23, 2025
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    smdub replied to the thread 510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length).

    Can 338 Norma donor brass be used? It has very slightly less body taper than Lapua. Not sure if the resizing die would take care of...

    Jul 22, 2025
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    smdub reacted to 45-90's post in the thread 510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length) with Like.

    This is what I used a new Rem 700 mag action with a new Lapua bolt... which has to be machined a bit to fit the action. The barrel is...

    Jul 22, 2025
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    smdub reacted to 45-90's post in the thread 510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length) with Like.

    I have found the best subsonic round to be the 338 Spectre in the AR 15 platform with a 16" barrel. It comes with a 6.5 twist almost...

    Jul 22, 2025

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