8mm Gasser in a Mle 1892 revolver?

Zak7572

Zak7572

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Just curious if anyone has done it, as Canada Ammo has this stuff on sale for 35$/box and 8mm French Ordnance is pretty expensive. For comparison:

8mm French
  • Bullet Diameter: 8.35mm (0.329")
  • Neck Diameter: 8.83mm (0.348")
  • Base Diameter: 8.96mm (0.353")
  • Rim diameter: 10.43mm (0.411")
  • Case length: 27.5mm (1.08")
  • Overall length: 36.7mm (1.44")
  • 129 gr @ 740 fps for 145 lb-lbf

8mm Gasser
  • Bullet Diameter: 8.11mm (0.319")
  • Neck Diameter: 8.56mm (0.337")
  • Base Diameter: 8.60mm (0.339")
  • Rim diameter: 9.68mm (0.381")
  • Case length: 27.0mm (1.06")
  • Overall length: 36.0mm (1.42")
  • 126 gr @ 820 fps for 188 lb-lbf

Difference
  • Bullet Diameter: -0.01"
  • Neck Diameter: -0.011"
  • Base Diameter: -0.014"
  • Rim diameter: -0.03"
  • Case length: -0.02"
  • Overall length: -0.02"
  • Energy: +43 lb-lbf

Think this would work with minimal modification?
 
I have no experience with these rounds but it looks like they would fireform.
Then you could load with appropriate bullets
 
I wouldnt spend a lot on an antique revolver and try to save a buck on ammo using a cheaper incorrect type. Just buy the factory 8 mm stuff or load your own, components are easily available I understand what you're thinking as the factory 8 mm stuff is really expensive but after a box or two you can start reloading with the empty brass and your cost should go down a lot a lot.
 
I wouldn’t. You’re already lucky that the 1892 is one of the only antiques you can use smokeless in without feeling guilty.
It didn’t travel this far in time just to be fed questionable ammo.
 
It would probably work similarly to 32 S&w in the 7.5 Swiss. Maybe worse for tumbling and leading. You don't have rim thickness measurements and that could be a trip-up if too thick. It's a good price and I see why you might want to try it out.

As mentioned, it might give you brass for reloading but it's easy stuff to make from 32-20 anyway.
If give it a shot let us know how it works.
 
You best take a look at that sale price again, I see it up for $40 not $35, if you are interested in cutting corners on the ammo and not just reloading it then you can get .32 S&W Long for closer to $25-30/box on a good day. These revolvers are not big fans of undersized bullets either way.

Bloke on the Range tests .32 S&W Long in the 1892 Mle around the 10 minute mark in this video here: https://www.youtube.com/watch?v=q_ttcE0mxkw
 
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