What are they?

[bigduke6]

Anything with a .312-.314 bullet will do Jim, .32S&W, .32 ACP etc.... Good to see you back.

[green]

The ctg is basically a 32 S&W with a wider rim.

[browningautorifle]

32 S&W with a wider rim.

Makes sense, at first glance and without any scale it does look like maybe a .455 or a .38 S&W...but the rim does appear wide.

[mike1967]

Dimensions for the Mullineux Adaptor round are;
OAL; 1.112
Rim Dia; .448
Rim thickness; .036
Bullet Dia; .312

There is another almost identical called the 303 Simplex Adaptor.

[bigduke6]

The thing about the good-old rimmed .303 is that you can use, and re-use, the full-sized case for "gallery" loads as long as you take care and use a "bulk" powder that takes up a LOT of space for weight. If you are running a Mk1 Metford, you could even use REAL Black Powder or Pyrodex for some extra "authenticity". A "heeled" bullet as found in some of the "Rook" cartridges and having a max diameter of about .317 may be useful as well.

Dust off the pith helmet, ammunition boots and red tunic and have at it, as they say in the classics.

Gallery loads is what I started to do once I got fed up of knocking out the empty case of the adapter, I,ve tried a few here and there, 14 grns of Unique behind any combination of FMJ bullet works a treat, must admit any round that uses the the .30 (.308) bullet is an added bonus, use a .30 RN FMJ 110grn bullet.

For .303 I,ve used the lighter bullets that are used for the 7.62 x 39 was given thousands a few years ago, still using them but I've not noticed any major difference between these and 180grn.

[newcastle]

Sorry for sounding incompetent, but what are gallery loads exactly?

[mmppres]

From my knowledge which could be wrong is gallery loads are low powered ammo used inside at short ranges with full size firearms. If wrong some one will correct me.

[newcastle]

That sounds super fun. I guarantee it wouldn't wash with the wife though

[Sentryduty]

gallery loads

gallery loads are low powered ammo used inside at short ranges with full size firearms.

Exactly right,

Think of the old term "Shooting Gallery" an indoor miniature range with subsequently low power/velocity guns, the gallery load concept has been pretty much replaced with airguns in widespread use, however it seems even airgunning is on the backslide for popularity.

As a kid I used to fire thousands of BB's and pellets each year, indoor, outdoor, plinking, pest control, and formal target competition, I don't see that happening with the current generation of youth.

Honestly I can contribute a lot of my adult professional marksmanship to being allow to "free range" with an airgun since age 8, during those formative years early practice develops the skills so well.

[newcastle]

Yep. We'd go up in the woods with air rifles and stay out all day. Walking through the houses to get there with them slung over our backs. Today people would freak out at kids with rifles