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Old 08-12-2017, 07:17 AM   #1
Earthquake
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Default Changing barrel on High Standard sentinel

Any body out there ever change a barrel on a High Standard Sentinel, Its pined in and the frame is aluminum.
The gun has a 6" barrel and I would like to put a 4" barrel on it, I have one I bought off of Ebay and it looks pretty straight forwards but any help would be great.
I thought what I would do would be strip it down and heat the frame with a heat gun and drive the pin out and remove the old barrel while it is hot, get every thing cleaned up and do the reverse with the new barrel that I keep cold.
Does that make sense?

Casey
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Old 08-12-2017, 01:49 PM   #2
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Never heard of this being done.

The High Standards are great little guns, but were mass produced and sold at a very low price as "plinkers". Pretty sure they are all, or mostly, aluminum construction.

I would be concerned you will just end up destroying the gun by attempting this. Is there anything wrong with the current barrel?

You might be better off looking for the model you want on GunBroker, and once you buy it, sell your current one here or on Backpage. If it is working and in nice condition you should be able to get back most of what you will have to spend to buy one on GB.
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Old 08-12-2017, 10:18 PM   #3
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Ditto Joes remarks ^^^.

Once you got the barrel off and slid the new barrel in place (and you might find that very hard to do without turning down the stub on the new barrel, or making a bushing to make it fit the frame, you would most likely find that the hold through the barrel for the pin, and the hole in the frame don't line up.


The manufacturing process for these was not all that precise, and most parts require a lot of hand fitting, and rarely in my experience have the holes on two different barrels lined up so that the pin went in and stayed tight.
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Old 08-18-2017, 05:43 AM   #4
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OK so I am hard headed and went and did it, I drove the pin out, it came out pretty easy, I tried to see if the barrel would turn with out the pin, it was solid as if it was screwed in so I heated the frame with a heat gun, the barrel come out very easy. I measured both barrels and they were with in a thou of one another so I heated the frame again and slid the 4'' barrel in with no problems, I had to heat it again to aline the front sight notch.
I let it cool and taped the pin in and it fit perfect, I re-assembled it and checked the gap, a .005" feeler gauge barely fits so I think it should be ok, I did not have a front sight and have not ordered one yet because I made one from 1/8" copper I had on hand, I want to shoot it and see if it will stay in place, I made it .010" taller then the one on the 6" barrel so I can file it to POA.
Here are the before and after pictures, next I want to paint the frame and grip frame with Alumihyde black paint and touch up the bluing.

Casey
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Old 08-18-2017, 06:37 AM   #5
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Proportion wise, I think a 5" would have been better...but then I am a pretty symmetrical kinda guy...
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Old 08-18-2017, 08:54 PM   #6
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Nice work Casey.

When I posted my comments, I completely forgot about your machinist background, had I remembered that, I would have told you to go ahead and try your idea for barrel removal, and added comments to caution folks with less machining or gunsmithing experience to think two or three times before trying this barrel swap.

A machinist or gunsmith can generally get him or herself out of what ever trouble they get themselves into with this sort of thing, even if it is the first time they are trying it.

With a swap like this, most novices don't realize the need to support the work piece, and provide some place for the pin being driven out to go into the support, nor do they often check to see if the pin is a taper pin needing to be driven out from only one particular side.

Also they rarely ever use the correct starter punch, and then the correct size pin punch (how many have I seen scarred up because they used a nail!) to finish driving out the pin. All things a machinist or gunsmith does without even thinking about it, using the support block, right punches, etc. that is!

I would estimate about 90% of all other folks trying things like this end up with a disaster and then either scrapping it, or taking it to a gunsmith to be repaired and then modified. The ones who do think it through and do it right should consider becoming machinists or gunsmiths!

I apologize for my over sight, and once again, nicely done Sir!
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Old 08-18-2017, 09:33 PM   #7
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Thank you Steve,
I am a closet machinist/gunsmith, I am primarily a Brake and Shear/Fabricator/ welder with a bit of machinist on the side.
I was going to use a dollar gaming token for the front sight but they are too thin, I like to use coins for front sights on old firearms, I made a front sight for a .58 Caliber black powder rifle I have out of a Susan B. Anthony dollar that turned out really cool.
I should be able to sell the 6" barrel and get my money back.

Casey
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Old 08-18-2017, 09:37 PM   #8
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Quote:
Originally Posted by NYECOGunsmith View Post

I would estimate about 90% of all other folks trying things like this end up with a disaster and then either scrapping it, or taking it to a gunsmith to be repaired and then modified. The ones who do think it through and do it right should consider becoming machinists or gunsmiths!
That would've been me, lol.

On other gun forums I've seen many a thread where people try to do something they THINK will be simple, and screw up their firearm, then make it even worse trying to undo what they did in a panic......




Nice work, Earthquake, and I agree the pistol looks better with a 4" barrel.

I've got one in pristine condition with a 6" barrel, but as it is really a slim/dainty/petite revolver, it looks better in the shorter lengths.
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Old 08-18-2017, 09:52 PM   #9
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Quote:
Originally Posted by Just an Average Joe View Post
Nice work, Earthquake, and I agree the pistol looks better with a 4" barrel.

I've got one in pristine condition with a 6" barrel, but as it is really a slim/dainty/petite revolver, it looks better in the shorter lengths.
Thanks Joe
I am thinking about putting a bird's head grip on it, the pop up on Ebay all the time, The barrel I used is actually a "Sentinel Deluxe" which had a different grip frame and used two piece grips. I may look for one of those frames for it so I can put a set of J. Scott grips on it.
I would like to find out if I can retro fit a later ejector star to it so it will spring back into the cylinder and not scratch the frame, the early guns did not have it.

Casey
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