303 British SMLE Cases

Discussions covering the components and techniques of reloading for your long gun.

When shot from your SMLE, do your cases look like those in the image?

Yes
5
83%
No
1
17%
 
Total votes : 6

Re: 303 British SMLE Cases

Postby Ranch Dog » 10 Sep 2018 14

Should add that with the 300 Sav, 308 Win, 7.62x39 and 35 Rem; I never return to the full-length die before the case necks need to be retired (tossed). I use the Collet with all those cartridges.
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Re: 303 British SMLE Cases

Postby Macd » 11 Sep 2018 07

As promised another picture with cases compared. I have included some measurements. Wish I had time to figure out tables in this forum. The loaded case is a factory Winchester as are the others except the noted PPU case.

Measurements (Left to Right)
1. .450 .455 .450 .450
2. .427 .426 .430 .425
3. .401 .404 .405 .401

Case Length (left to Right)
2.218 2.209 2.210 2.222

It is hard to make comparisons on such a small sample. The difference in the taper and length of the PPU case to the unfired Winchester is striking. The long length of the neck on the sized case understandable as the brass has to go somewhere when the neck is sized down. The case length is right at the maximum shown in my Lee manual. These cases will get a trim before being cleaned and reloaded.

303 Cases Comparison.jpg
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Re: 303 British SMLE Cases

Postby Ranch Dog » 11 Sep 2018 19

I've always wondered what a fired case from a Ruger #1 looks like.
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Re: 303 British SMLE Cases

Postby Macd » 12 Sep 2018 08

Ranch Dog wrote:I've always wondered what a fired case from a Ruger #1 looks like.


I wouldn't mind seeing one too. These are from a Parker Hale #4 Mk 1/2 made in Maltby in 1944 that was FTR'd in 1955. I believe it was given a brand new barrel as it is bright and shiny with really sharp rifling. The bolt head is a #0 and it has one of the tightest actions in a LE I have every experienced. I keep on meaning to do a chamber cast on it and several other surplus rifles I have but getting Cerrosafe isn't easy up here.

PH 303.jpg


PH 303 Recevier.jpg
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Re: 303 British SMLE Cases

Postby orerancher » 12 Sep 2018 11

Really like the Stock on Your Rifle!
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Re: 303 British SMLE Cases

Postby Fat Albert » 18 Oct 2018 13

Macd: you are just "peeing in dark" if you are trimming your cases and don't know what the actual chamber lenght (bolt face to end of the chamber neck) is. 303 Brit were battle rifle and chambered so you could firer dirty ammo all day without cleaning them. If you are worried about case lenght get a "chamber button" to find the lenght. NOE casting Moulds and Sinclair sell them and Sinclair has a video on how to uses them. I got one when I had a #1mk3 and we tested 10 303B at my gun club and the shortest was 35/1000" over max. and the longest was 1/4". PS: when I bought my rifle, I bought 100new Rem cases(only port in the storm at the time) and a 2 Die Lee set. After firing the cases I saw what the full lenght die did to the first 5 cases I stopped sizing. I ordered a Redding neck sizer (Lee didn't make a collet neck sizer then) and never used the FL sizer again and fired all the cases about 20 each. My best load was with Speer .311 150gr and IMR 4320 .
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Re: 303 British SMLE Cases

Postby Macd » 19 Oct 2018 11

Quite right I do not know the actual maximum neck length that is safe in this rifle hence staying to published maximum. If you must "Pee in the dark" then at least do it safely eh? I also trim to length any case where I am roll crimping into a cannelure.
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Re: 303 British SMLE Cases

Postby Ranch Dog » 19 Oct 2018 13

Macd wrote:Quite right I do not know the actual maximum neck length that is safe in this rifle hence staying to published maximum. If you must "Pee in the dark" then at least do it safely eh? I also trim to length any case where I am roll crimping into a cannelure.

I agree, especial when the chamber length is beyond the confines of the magazine.
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Re: 303 British SMLE Cases

Postby GasGuzzler » 19 Oct 2018 17

Yep
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Re: 303 British SMLE Cases

Postby reloader762 » 26 Oct 2018 18

RD you might find this thread of interest. It's pretty long but there is some good info on reloading for the 303 British and ways to prep your brass to extend the case life, the O ring trick is especially useful.

https://www.milsurps.com/showthread.php?t=24699
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