Thread: Making 25 rimfire reloadable brass

Originally Posted by AR7

Hi great job in making food for the ole girl
i am building a 25 acp single shot and wish to know how to change the 22 hornet brass to 25 acp
or find some empty 25 acp brass .
Have you thought of using 25 cal air gun slugs 25cal x 44 grains RN solid lead they can be bought from from Amerzon
Cheers AR7

@AR7 Making 22 hornet brass to 25 hornet is really easy.

But then I used a 25 ACP carbide sizer die to take the body taper down to the 25 RF diameter. This only partly works because the sizer doesn't go to the rim of the case due to the thickness of the shell holder

I have some 36 grain cast airgun pallets coming from within NZ. But I realistically expect them to be undersized because 25 air rifles seem to run about a .254" groove.
But you never know.

Well if I were doing a single shot rifle like you mentioned I would be using a case with a rim. The 25 ACP is going to be very tricky to make a rimless extractor for.
The 25 hornet or a wildcat based on Hornet brass that doesn't need a huge amount of modification would be nice.

The up side of a single shot rifle is once you have made 100 cases you are unlikely to loose them as you would with a repeater