huntsman/sidekick breech plugs - Graybeard Outdoors
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post #1 of 11 (permalink) Old 01-29-2020, 01:33 PM Thread Starter
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Default huntsman/sidekick breech plugs

i have a huntsman 'project' barrel, and was wondering if anybody was still making carrier-less plugs for the 7/8 size. i realize the threads are a little strange (i read it was 7/8-20), so "off the shelf" solutions don't work, unless there's a cross-fit from another brand of in-line. adaptations don't appear to be available without going custom.
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post #2 of 11 (permalink) Old 01-29-2020, 02:17 PM
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There are a couple options, MU and PRB.

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post #3 of 11 (permalink) Old 01-29-2020, 02:26 PM
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I have made a couple numerious emails nothing answered.

I need to check the number I have.

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post #4 of 11 (permalink) Old 01-30-2020, 10:14 AM
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I was able to get thru to MU this AM.

They ONLY have 5/8 available. NO PLANS on making more.

Single person who made them retired.

Well that sux...

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post #5 of 11 (permalink) Old 01-30-2020, 02:40 PM Thread Starter
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does anyone know what the actual thread for that plug is? just curious.
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post #6 of 11 (permalink) Old 01-30-2020, 05:47 PM
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PRB still listed both the 5/8" and 7/8" carrierless BPs.

https://www.prbullet.com/shop/produc...hp?sSKU=nef5.8

https://www.prbullet.com/shop/produc....php?sSKU=0578

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Originally Posted by rkeltner View Post
does anyone know what the actual thread for that plug is? just curious.
My Starrett thread pitch gauge says the 7/8" plug is 20 tpi.

Tim

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post #7 of 11 (permalink) Old 01-31-2020, 01:39 PM Thread Starter
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thanks. for all the tools i have, for some reason, a pitch gauge has never been a priority item to obtain. well, i have spent an inordinate amount of time over the past 12 hours looking for specialty machine screws in that thread, which turns out to be classified as 7/8-20 unef, a standard, but virtually non existent bolt size. my next thought, being the frugal [translated-cheap!] person i am....i'm contemplating adapting/altering the existing breech plug to use any one of the shotgun primer adapter nipples on the market. i did a file test on the breech plug, and it is hard, but within the range of machine-ability. drilling slightly small for maximum thread engagement, it shouldn't be difficult to do. the biggest issue would be depth for actually seating the primer adapter, and that would be done slowly and carefully.
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post #8 of 11 (permalink) Old 01-31-2020, 03:16 PM
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I machined and threaded a 7/8" Huntsman BP to accept a musket nipple, have never shot a load, but it pops flangeless musket caps just fine. Since I did that, the state made 209 primers legal, but the ML seasons here are crap, so I never changed the BP. I would think you could make an adapter to accept 209 primers that could be used in a modified factory BP.

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post #9 of 11 (permalink) Old 01-31-2020, 04:00 PM
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On second thought, all you'd have to do is find a 209 adapter for another ML that can work in a modified H&R BP.

Tim

https://accessories.tcarms.com/produ...thunderhawk-2/

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post #10 of 11 (permalink) Old 03-04-2020, 10:17 PM
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Tim, I haven't been on here in years but finally decided I needed to pick up a new BP while I still could. Saw this thread and ordered a 7/8" plug from Precision Rifle. My kid is old enough to hunt with firearms now so I bought another make and want to run Blackhorn 209 in both rigs. The new BP should give me years of service out of my Huntsman and is cheaper than a new gun. Glad the sub forum is still up, thanks for keeping it going.
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