Suppressed 1900 .32 H&R Mag

[S.E.G]

For a first post I'm guessing an introduction is in order, but I haven't much to tell other than I'm from New Zealand and enjoy tinkering with rifles and reloading.

Of more interest is my latest 32 conversion based on a H&R 1900. The barrel has a 6" insert and the remaining 10" is an internal suppressor with freeze plugs as baffles. The wood work was cleaned up before being finished with Danish Oil. With an overall length of 31" it real handy and topped of with the Tasco ProPoint it's a fun little rifle to shoot. It's hearing safe with standard loads and shooting 32 S&W (short) with flush seated 45gr round balls behind 1.5gr of AS50N (Green Dot equivalent) is so quiet it makes you want to giggle.
http://uploads.tapatalk-cdn.com/20161222/a3ad1faf0762c1f3291065025fe8c646.jpghttp://uploads.tapatalk-cdn.com/20161222/3754000ee1b9f9e0bd283cfbffa3e464.jpghttp://uploads.tapatalk-cdn.com/20161222/b51af91847d2f9e3a7d7661abd0cb887.jpghttp://uploads.tapatalk-cdn.com/20161222/6858ec40933ef066585f1ae5bd3cb446.jpg

[Artful]

Oh, Great Project rifle - excellent pictures
that sounds very nice did you rebore fit your freeze plugs or fit each plug to the bore?
- do you have video?

[jmorris]

I like it and would like more build photos, if you have them.

[Ballistics in Scotland]

It looks like an extremely practical firearm. Some full power loads will be supersonic, but that is still more difficult for an animal to locate. Does it have the unaltered shotgun firing-pin? The primers on the full-power .32H&R will bear watching, but they are likely to be perfectly OK.

The only snag about the length is that it would fit under your chin or perhaps even armpit if you have a fall. It practically says "Use me in dense undergrowth", and as there isn't much reason not to drill or solder on top of the barrel, about halfway along its length, there is a bit to be said for having a sling attach there and on top of the stock comb. That way it would hang upright across your chest, to be raised with the minimum of movement.

[Outpost75]

Not suppressed, but conventional barrels in .32 ACP and .32 S&W Long.

I have since rechambered the short .32 ACP barrel to .32 S&W Long, and the 25" barrel to .32 H&R Magnum.

183268The 25" barrel is nearly silent with factory Fiocchi wadcutters.

[EMC45]

Getting one of these tiny and handy rifles is not a want for me......It is a need. I have a 1909 Arg barrel that slugs at .312 that would be perfect for a similar project. I need to find a cheapy .410 and stub it.

[Black Beard]

I'd try a faster powder and a heavier bullet. I found 2.2 grains of N310 behind a unhardened 120 grain bullet is really nice in a full size 310 Cadet (similar capacity to a 32 H&R).If you can get the bullet to upset in to the bore you'll get more initial pressure without using extra powder and making extra gas. The heavier bullet and faster powder will do the same thing and get more energy out of the powder, so the gas energy (pressure) as the bullet leaves the barrel will be lower. This reduces noise while the energy of the bullet goes up.BB

[oneofsix]

Very, very cool. I'm waiting on a recently purchased Remington #6 to arrive so I can evaluate if it's worth modifying.

[DanishM1Garand]

My goodness!!

what a nice little woods gun.

[Mica_Hiebert]

That looks like a ton of fun!

[Ballistics in Scotland]

Fast powder would indeed reduce terminal pressure for a given velocity, but that is hardly critical for effective suppression with such ample provision of baffles. It would, however, reduce the amount of solid matter deposited between the baffles.

[Hamish]

S.E.G,

Thats quite an intro and has been said, more info on the build would be much appreciated.

Outpost, very classy!

[Blackwater]

Very neat little rifle! I bet it'd be the beez kneez on frogs and squirrels!

[funnyjim014]

I have a win 37 with a chopped barrel begging to be made into a 38spl pop gun

[Outpost75]

I have a win 37 with a chopped barrel begging to be made into a 38spl pop gun

I have a .38 Special barrel for mine which John Taylor built. VERY satisfying!

183501

[izzyjoe]

I've been wanting to build one myself, I have an old 20ga topper Jr. That is begging for a make over, 38spl should do it! Very nice builds fellas.

[seppos]

I once repaired a inner barrel that was made to a single barrel shotgun. It had a short barrel that was threaded from the mouth. From the other end one put in the baffle module that had a thread in one end. One tightened it together and had a supressed barrel. The cartridge was a short pistol cartrtridge.. Might have been .32 ACP if I remember right.
In the chamber end the outer dimentions where made according to the 12 gauge so that it fitted to the original shotgun chamber. The shotgun barrel itself acted as a tube to the supressor.

S

[Outpost75]

I once repaired a inner barrel that was made to a single barrel shotgun. It had a short barrel that was threaded from the mouth. From the other end one put in the baffle module that had a thread in one end. One tightened it together and had a supressed barrel. The cartridge was a short pistol cartrtridge.. Might have been .32 ACP if I remember right.
In the chamber end the outer dimentions where made according to the 12 gauge so that it fitted to the original shotgun chamber. The shotgun barrel itself acted as a tube to the suppressor. S

Now THAT sounds fiendishly clever! Any clue as to origin or date of manufacture?

[Artful]

If in the NFA branch - would they consider the shotgun the NFA item or just the insert and monocore? - I wonder

[rondog]

Interesting - who does these conversions? I have a 16ga single that's been sawed off to 1/2" over legal (18.5"?) that might be a good candidate. I've never even fired it.

Not suppressed, just converted to something else, like .38/.357/.44mag/.45 Colt/etc.

[seppos]

Now THAT sounds fiendishly clever! Any clue as to origin or date of manufacture?

Can not say, but despite its rudness it was a good design and would work even with aluminium parts.

S

[mcdaniel.mac]

If in the NFA branch - would they consider the shotgun the NFA item or just the insert and monocore? - I wonder
With removable barrels, the entire barrel (with the baffles and core) is considered the suppressor. I have a 10/22 done that way. The suppressor has the same serial as the rifle it's on, but it could be fitted to a different 10/22 if needed.

Contact your representatives in the house about the Hearing Protection Act, and you might never have to find out!

[Artful]

With removable barrels, the entire barrel (with the baffles and core) is considered the suppressor. I have a 10/22 done that way. The suppressor has the same serial as the rifle it's on, but it could be fitted to a different 10/22 if needed.

Contact your representatives in the house about the Hearing Protection Act, and you might never have to find out!

But your barrel is modified to be a suppressor - if you make parts that insert into any 12 or 20 gauge barrel with no modifications to the existing barrel, I don't know if you would have to "marry" it to a barrel or if it would be like the oil filter adapter and be NFA Item on it's own.

[mcdaniel.mac]

But your barrel is modified to be a suppressor - if you make parts that insert into any 12 or 20 gauge barrel with no modifications to the existing barrel, I don't know if you would have to "marry" it to a barrel or if it would be like the oil filter adapter and be NFA Item on it's own.
The barrel would be the suppressor body, I suspect, in the same way that the oil filter is considered a suppressor part for the oil filter adaptors.