loading 308 bullets for 303 enfield

neotekz

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can i use 308 bullets for a 303 cartridge? i want to look into this cause i can get bulk 308 for half the price of 303.
 
Short answer is no.
The .303 uses .311/.312 bullets not .308.
Exact chamber dimensions of surplus gun varies a great deal though and once in a while I have heard of people using them with o.k. results.
 
The 50% longer answer is 'Yes'

Sure.

It won't hurt anything at all and the rifle may or may not be accurate with them.

My Jungle Carbine shoots .308 bullets just as well as it shoots 'proper' sized bullets.

You need to either substitute a .308 expander from some other die in your .303 British die or remove the expander all together and go without one, just seat the bullets in the sized down neck.

Have fun, if your rifle likes them you will have all kinds of things to try.
 
Slug the barrel first. Lee-Enfield barrels can measure from .311" to .315" and still be considered ok. An undersized bullet out of a .312" barrel will have no accuracy. Worse with a larger diameter.
 
so if the bullet chambers fine it should be ok, i just might not get the best accuracy?

what's slug the barrel mean?
 
Slugging the barrel means pushing a lead slug through the barrel then measuring the diameter of the slug with a micrometer, to see what size the barrel is.
In your case it is a waste of time. The 308 bullets will either shoot satisfactory, or they will not. Shooting them is the only way you will know.
 
Slugging the barrel means pushing a lead slug through the barrel then measuring the diameter of the slug with a micrometer, to see what size the barrel is.
In your case it is a waste of time. The 308 bullets will either shoot satisfactory, or they will not. Shooting them is the only way you will know.

I hope they inderstand to use a LEAD SLUG and not a jacketed bullet.
 
Slugging the barrel means pushing a lead slug through the barrel then measuring the diameter of the slug with a micrometer, to see what size the barrel is.
In your case it is a waste of time. The 308 bullets will either shoot satisfactory, or they will not. Shooting them is the only way you will know.

There you go, getting all practical again!!! :D

Great advice. No fooling around, just load a few and go to the range and give it a try.

Just for the record, EVERY 303 Br I have tried 308 bullets in, has shot them plenty well enough to use for hunting out to 200 yd. Some shot even better.

Ted
 
H4831 and Why Not? got it right in my opinion. I've fussed and fuddled with slugging bores a handful of times and personally think it's a total waste for this scenario.

Load some .308 dia bullets in your 303 brass and just try the darn things.

I've tried in two rifles I own and the groups at 100 yards are just as good as with .311 bullets.

I don't switch expanders in my dies to do the job either - here's a simpler way - use a .308 win, or 30-06 or any other .308 dia set of dies to just neck size. No fussing with taking apart dies or anything. I use the proper shell holder for .303 british and my .308 win die to neck size/deprime (a few screws of the depriming pin adjusts the die to deprime and neck size), then throw in some powder and a .308 dia bullet and done is done.
 
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thanks for the help guys i will try some 308s next weekend, i already already load 308s for my stevens so i already have everything i need.
 
H4831 and Why Not? got it right in my opinion. I've fussed and fuddled with slugging bores a handful of times and personally think it's a total waste for this scenario.

Load some .308 dia bullets in your 303 brass and just try the darn things.

I've tried in two rifles I own and the groups at 100 yards are just as good as with .311 bullets.

I don't switch expanders in my dies to do the job either - here's a simpler way - use a .308 win, or 30-06 or any other .308 dia set of dies to just neck size. No fussing with taking apart dies or anything. I use the proper shell holder for .303 british and my .308 win die to neck size/deprime (a few screws of the depriming pin adjusts the die to deprime and neck size), then throw in some powder and a .308 dia bullet and done is done.

Good idea.
 
H4831 and Why Not? got it right in my opinion. I've fussed and fuddled with slugging bores a handful of times and personally think it's a total waste for this scenario.

Load some .308 dia bullets in your 303 brass and just try the darn things.

I've tried in two rifles I own and the groups at 100 yards are just as good as with .311 bullets.

I don't switch expanders in my dies to do the job either - here's a simpler way - use a .308 win, or 30-06 or any other .308 dia set of dies to just neck size. No fussing with taking apart dies or anything. I use the proper shell holder for .303 british and my .308 win die to neck size/deprime (a few screws of the depriming pin adjusts the die to deprime and neck size), then throw in some powder and a .308 dia bullet and done is done.

Tried the 30-06 die but it only gets maybe 3/16 down the neck and doesnt make much difference in tension. Still can slip the 308 bullets in by hand. 308 die is shorter so of course works fine.
 
I had some .283 dia. 150 gr bullets and tried a couple over a chronograph in a 7x57 1900 to 1950 fps . Same powder charge with .284 dia 150 gr bullet around 2500
 
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