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fastshooter03

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Posts posted by fastshooter03

    223 brass sizing problems

    in Rifle/Shotgun

    Posted

    I'm reloading .223 Remington for an AR. I've read multiple guides/posts that recommend that you full length resize (ok) and bump the shoulder back 0.003" to 0.004" or 0.003" to 0.005" from the fired case dimension. My 1st problem is my fired case dimensions can vary by 0.003" to 0.004" or 0.003" to 0.005". I'm using an RCBS Precision Mic to measure the cases. I've read at least one recommendation to take an average and another to use the longest dimension. In the world of thousands of an inch, does this make sense? I'm also wondering how a fired case can precisely represent the chamber in the 1st place since the case must shrink from the chamber walls to allow for extraction and as bidedp51 points out, wants to "spring back" to it's original dimension depending on it's hardness. Also, can gas system length affect the fired case dimension since a carbine length gas system begins the extraction process sooner than a rifle length gas system?

    Can you share what variance in fired case dimensions you're seeing? Thanks.

    Not that much...usually .001-2" at most.

    I don't know how the RCBS mic works but make sure the base of your cases are actually flat and not burred up or primer cratered.

    Nick

    Advice on lightnening a carbine buffer ?

    in Rifle - Technical

    Posted · Edited by fastshooter03

    IDK if you'd want to take out any more weight and replace it with something lighter.

    Remember the A2 buffer is 5.1 OZ so you're already lighter plus your lightened BCA.

    You're right to want the deadblow left intact.

    I've had bolt bounce back-open with a solid buffer and a super-lightened spring on a 300BLK so it can happen.

    You may not notice it on a heavier sprung setup unless you're pulling the trigger fast enough and get a misfire. Not good in any case.

    Nick

    Adams/Voodoo barrels

    in Rifle - Technical

    Posted

    I think Adams is using this LW barrel on their newest(I think?) piston upper.

    Mark Roth(XRAIL) is testing this upper out this year. He has a couple extra barrels that I inspected.

    If I were to use one of these barrels, I would recrown it and definitely not use a crush washer.

    You don't need lightweight anything(except spring) nor an adjustable gas block with uppers that are on the edge of working.

    Nick

    Make a Captured Buffer Spring?

    in Rifle - Technical

    Posted

    Well, I guess I wanted to reinvent the wheel. See Left model.

    Decided to make it heavier and added carrier alignment. 4.9 OZ.

    Aluminum body was getting beat up pretty bad so now it's 1018 steel and 41L40.

    A rubber washer can be added to front as well if wanted. Time will tell how it holds up but it's really smooth.

    Nick

    Captured.jpg

    New Versa Max not cycling

    in Shotgun - Technical

    Posted

    Thought Speedbead was a fiberoptic? I see now it is the receiver mounted fastfire.

    Although it's visually better getting the optic closer to your face, we've always mounted them on the vent rib.

    I am also using a Versamax this year. It seems a litter more robust than the Mossberg 930.

    Nick

    I'm done with it. These price increases are ridiculous going to mo

    in 9mm/38 Caliber

    Posted

    I've talked to some ^$$holes at the local gunshows that tell me they either buy up anything they can find to hoard or to resell whenever it can be found.

    They will even go into places multiple times to get around the 1-item per customer thing.

    I've talked to dummies that go into debt to backorder hundreds of thousands of primers cuz they think they can resell them at a profit but not knowing when they will arrive.

    When they do come and the price is slightly down they complain that they can't sell their huge stockpile.

    You can't fix STUPID. If morons are going to pay high prices then the prices are going to stay high.

    Nick

    Custom Rifle Comp by Computer Simulation

    in Rifle - Technical

    Posted · Edited by fastshooter03

    Here's the Masterblaster pics:

    masterblaster2.jpg

    masterblaster.jpg

    A little dirty but you can see how it's designed.

    IIRC it was around $150 around 15 years ago. Pricey but the only thing available that looked like it worked well.

    I think we had a Clark(AKA rolling thunder type...)but just didn't work well.

    I think the cost put out of business.

    Today's machinery should be able to produce this type of brake at a much more reasonable price.

    But that is up to the seller.....

    Nick

    Custom Rifle Comp by Computer Simulation

    in Rifle - Technical

    Posted

    That's the old "Master Blaster" that brownells used to sell. Only the MB had 3 ports and came in two sizes.

    I still have one and they are very effective and loud.

    Nick

    It may look like it by coincidence, do you have a picture of it? I would be interested to see the port design on it.

    I'll have to take a pic when I get the chance.

    The 3 ports aren't as tall and has two top holes.

    I think it was around an inch diameter.

    Nick

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