Potential .327 single shot rifle solution: Chaszel .410 to .327 adaptor.

[Ugly Sauce]

Shooting a .410 shotshell out of a 12g with an adapter will be workable.

For some reason it seems to be very workable. I've been playing around with .410's in both 12 and 20 gauge for a while now. They perform very well. ? Kind of very "counter intuitive". That seems to be the case with others as well from what I hear/read or absorb from osmoses. !!! A real winner for me, because for subsistence hunting/survival purposes, I can carry way more .410's than 12 or even 20gauge shells, (weight for weight/bulk for bulk) and for real small game like squirrels, grouse and rabbits, they are perfectly adequate. At the same time, a few 12 or 20 gauge Brenekke slugs in the bag offers more protection than any .410 slug load.

I agree, for shooting pistol rounds out a shotgun, they do present accuracy problems, both for the points you mention, and also most shotguns not having a rear sight. Of course sights can be added to any shotgun, but it is another bridge to cross.

 

[Oninotaki]

Quick Update again on this project. I picked up a Stoeger .410 SxS Coach gun to use with the Chaszel .410 to .327 adaptor and it works like a dream so far. I only had enough time to try out the Stoeger with 4 rounds of .410 1/4oz slugs from ATI, and 4 rounds of American Eagle Handgun .327 Federal Magnum 100 Grain from offhand.

The Stoeger worked beautifully with the ATI slugs, which I have had extraction issues with in more complicated .410s. So that was a nice plus, as I have a fair amount of those I picked up since .410 is so hard to get.

In even more exciting news for me, the full power .327 rounds from American Eagle had a very light felt recoil out of the Stoeger, and all shot with out incident. The adaptor itself slides nicely into and out of both barrels of the Stoeger, and pops out a little bit with the Stoeger's ejector making shell extraction easy.

Now how accurate was any of these shots? No idea as I only had a backstop to shoot at, and I was in a rush, was shooting offhand, and only had a brass bead to aim with. I do have some rib mounted sights from Truglo (TRUGLO Pro-Series Magnum Gobble-Dot All-Metal Sights with Elevation Ramp for Ventilated Rib Guns, Full Windage and Elevation Adjustment) on the way, and once I get them I will try to actually hit an actual target and not just a wall of railroad ties.

​

 

[Ugly Sauce]

You done well. I hear tell that if you index the insert the same way every time, you can get a repeatable point of impact. (POI) Well good, I bet you'll do well on an actual target.

 

[Oninotaki]

You done well. I hear tell that if you index the insert the same way every time, you can get a repeatable point of impact. (POI) Well good, I bet you'll do well on an actual target.

I think I will be able to do that because of the way the ejector of the stoeger lines up with the ejector recess on the adaptor.

 

[NIGHTLORD40K]

You done well. I hear tell that if you index the insert the same way every time, you can get a repeatable point of impact. (POI) Well good, I bet you'll do well on an actual target.

Not to be Debby Downer, but I tried marking and indexing my adapters so I could find a consistent POI and it didn't make any difference. Impacts were still all over randomly. The youtubers Ive seen try them had similar results.
Not saying the OP won't get lucky just dont get your hopes up.

 

[Ohen Cepel]

Do you know, or did they say what the bore diameter is on the insert? That may help down the road if you do have accuracy issues.

 

[Ugly Sauce]

Not to be Debby Downer, but I tried marking and indexing my adapters so I could find a consistent POI and it didn't make any difference. Impacts were still all over randomly. The youtubers Ive seen try them had similar results.
Not saying the OP won't have better results, just dont get your hopes up.

Well, I just heard tell, didn't know. Not surprised, although it sounds logical.

 

[Ugly Sauce]

Do you know, or did they say what the bore diameter is on the insert? That may help down the road if you do have accuracy issues.

Don't some of the rifled inserts with the short barrels have an 0-ring on the end of it's barrel? Seems like that would help. If not, couldn't a guy wrap it with something for a snug fit?

 

[NIGHTLORD40K]

Don't some of the rifled inserts with the short barrels have an 0-ring on the end of it's barrel? Seems like that would help. If not, couldn't a guy wrap it with something for a snug fit?

Some do, but only if they have sufficient thickness in the adapter, most of the .410 inserts are too thin.
My .410 to .380 adapter was so thin that it was totalled after falling off the kitchen table.
The .22 inserts are thick enough, but the one I have has issues with extractor clearances and you still don't want it geting ejected onto the floor every time you open the action.

 

[Oninotaki]

Some do, but only if they have sufficient thickness in the adapter, most of the .410 inserts are too thin.
My .410 to .380 adapter was so thin that it was totalled after falling off the kitchen table.
The .22 inserts are thick enough, but the one I have has issues with extractor clearances and you still don't want it geting ejected onto the floor every time you open the action.

The adaptor I have is thin, but not as thin as I expected. It also feels hard to the touch. When I get off work tonight I will get a measurement of the adaptor wall thickness.

On the Chaszel website they recommend plumbers tape at the end of the tube since the adaptor is too thin for an o ring. I am probably going to go through a process of testing how accurate it is with the sights I bought, then with plumbers tape, then I will investigate thin rubber materials as a more robust alternative to the plumbers tape, if I see an improvement with the tape.

 

[Danaidh]

I installed the .22 long rifle to .410 18" (i think) adaptor in an old 1916 Enfield .410 musket bolt action chambered for 3" .410 shells. I had to pull the bolt to carefully slide it in. It fit fine and if indexed correctly would eject spent shells. I had to make some small indexing adjustments to get Point of aim with the existing sights. It converted my .410 Enfield to .22 LR and I love it. I mostly just play at the range with it but it would be accurate enough for small game if I chose. It is quiet with no recoil!!!

 

[TTv2]

That is the problem with them, they may not shoot to where the sights are looking. Or the bead.

Yup, the lighter the projectile the further the elevation will be off in a shotgun with a rifled chamber adapter.

OP best get a scope.

 

[TTv2]

Possibly, but why not one .38 barrel and one 410? Combination gun. For a close up follow up shot put a Brenekke slug in the 410 barrel. Just regulate the sights for the .38 adapter barrel. ?

The .32 is a better small game caliber than .38 and will have a flatter trajectory, however for use in an adapter in a shotgun with stock sights or the bead the reality is you use whatever has a POI that best matches the POA. That can, and likely will, be different for each gun.

I have a .32 adapter that shot far off the POA that it's nearly useless, but the .45 adapter I bought and loaded with 250gr bullets hit within an inch of the bullseye at 25 yards and grouped great too.

That was in a 12ga, .410 may be different.

 

[TTv2]

Not to be Debby Downer, but I tried marking and indexing my adapters so I could find a consistent POI and it didn't make any difference. Impacts were still all over randomly. The youtubers Ive seen try them had similar results.
Not saying the OP won't get lucky just dont get your hopes up.

Have you tried the adapter in different guns and have u tried different ammo?

 

[TTv2]

Some do, but only if they have sufficient thickness in the adapter, most of the .410 inserts are too thin.
My .410 to .380 adapter was so thin that it was totalled after falling off the kitchen table.
The .22 inserts are thick enough, but the one I have has issues with extractor clearances and you still don't want it geting ejected onto the floor every time you open the action.

.32 adapter for .410 is going to be thicker and more robust.

But, good to know that the .36 calibers have this issue. I will avoid them in the future with .410

 

[NIGHTLORD40K]

Have you tried the adapter in different guns and have u tried different ammo?

Just the one .410 gun, adapters in .22, .380. and 9mm. Couldn't get a consistent POI on any of them, even with indexing.
At one point, Chaszels website said they had suspended production of the .410/9mm adapters due to "design issues." I suspect it had something to do with how thin the material was.

I've had the same accuracy results with my 16GA, using the Shooters Box and Little Skeeters adapters in .410 smoothbore and 357, and 9mm rifled. No consistent POI.

 

[Oninotaki]

Ok here are the promised measurements:

Chaszel Adaptor:
-OD: .402
-Wall Thickness: .059

Stoeger Coach SxS:
-ID at end of Barrel (Full Choke): .390

 

[Ugly Sauce]

It is quiet with no recoil!!!

Like an air rifle I bet. ! I have a .22 Hornet, that loaded with something like 1 grain of Unique, and a .22 air rifle pellet, is as quiet as a....air rifle.

 

[Ugly Sauce]

The .32 is a better small game caliber than .38 and will have a flatter trajectory, however for use in an adapter in a shotgun with stock sights or the bead the reality is you use whatever has a POI that best matches the POA. That can, and likely will, be different for each gun.

I have a .32 adapter that shot far off the POA that it's nearly useless, but the .45 adapter I bought and loaded with 250gr bullets hit within an inch of the bullseye at 25 yards and grouped great too.

That was in a 12ga, .410 may be different.

Oooops my bad, I meant .327, which the op is talking about, not .38.

 

[TTv2]

Just the one .410 gun, adapters in .22, .380. and 9mm. Couldn't get a consistent POI on any of them, even with indexing.
At one point, Chaszels website said they had suspended production of the .410/9mm adapters due to "design issues." I suspect it had something to do with how thin the material was.

I've had the same accuracy results with my 16GA, using the Shooters Box and Little Skeeters adapters in .410 smoothbore and 357, and 9mm rifled. No consistent POI.

All with bead sights?

 

[NIGHTLORD40K]

All with bead sights?

My .410 Enfield musket has the original rifle sights, but the elevation wheel is pinned in place so no adjustments are possible.

The 16GA Berretta has a bead front and a gutter-style groove along the top of the receiver to aid in aiming, so its possible to get a decent sight picture with both guns.

 

[Danaidh]

NIGHTLORD40K said: "My .410 Enfield musket has the original rifle sights, but the elevation wheel is pinned in place so no adjustments are possible."

@NIGHTLORD40K the pin can be removed or the sights replaced if you can find a suitable replacement part.

 

[NIGHTLORD40K]

NIGHTLORD40K said: "My .410 Enfield musket has the original rifle sights, but the elevation wheel is pinned in place so no adjustments are possible."

@NIGHTLORD40K the pin can be removed or the sights replaced if you can find a suitable replacement part.

Could be, but no reason too, really, lol. Grouping with buckshot is acceptable at 25yds and it shoots slugs close enough to POA at 50.

 

[Oninotaki]

So I dove all the way in on this and I got some Truglo sights and a second .410 to .327 16 inch adaptor so I would have one for both barrels giving me the option to make this a double barrel. 327 SxS rifle.

I wrapped both barrels with 2 layers of teflon tape a half inch down from the top of the adaptor. Then I placed both adaptors in the the shot gun indexed with the rim recess to the top of the barrel so that it would be easy to extract the spent casings without the shotguns extractors getting in the way.

The Truglo sights mounted quickly and securely. Both stayed on through all the man handling and shooting without so much as a wobble.

I shot 4 rounds of .327 from the bench in a mount. Followed by 6 rounds of .327 off hand, and then 7 rounds of .32 h&r magnum I had with me.

What I discovered is that the right barrel is dead on, it hits right where I aim using the sights mounted to the rib. The left barrel hits to the right of the of where the right barrel hit by about 4-7" at 20 yards. This is hilarious to me, and I am not sure if I should try to correct for that by adjusting how the adaptor is indexed in the left barrel, adjust the windage of the the rear sight, or just load the left barrel with .410 shot of some kind and keep it as a combination gun.

No matter how this turns out, since at least one of the barrels is dead on I am very happy with the experiment.

 

[NIGHTLORD40K]

Thats a pretty neat setup.