303 bullet size

[enfield2band]

the two bands that stick out on the slug measure .318
it fired the ppu .311 fmj ok,

My friends rifle shoots the .311" copper jacketed bullet alright, but lead is not accurate with the standard size bullet which is why he had a mould made with a bigger diameter bullet. The SMLE he has got had been rebarrelled at some point and the rifling is square. The gun had been in storage somewhere and was packed in grease which had to be cleaned off.
Because of the age of the rifle he only shoots lead bullets to preserve the barrel life and downloads the cartridges.

If I remember correctly a gas check is needed on lead bulets for velocities over 1200fps otherwise the bullet will strip the rifling. (Ride over it).

[lightning22]

NOE moulds do moulds off the shelf in most sizes, I've got three for the Enfield and he'll usually get them to you in less than a couple of weeks from the States.

[gtpkeeper]

measure the inside of a fired ppu case it mic at .313 so thinking ill need aleast that size in lead ??

[MikB]

measure the inside of a fired ppu case it mic at .313 so thinking ill need aleast that size in lead ??

That has little or no bearing on the bullet size needed. The casemouth will have been blown wider as the bullet was driven out and up the bore, then sprung back part of the way - practically impossible to know how much, unless you know the chamber neck i/d and the exact case wall thickness.

[gtpkeeper]

That has little or no bearing on the bullet size needed. The casemouth will have been blown wider as the bullet was driven out and up the bore, then sprung back part of the way - practically impossible to know how much, unless you know the chamber neck i/d and the exact case wall thickness.

Ok so what size do you think

[lightning22]

When you say you've slugged the bore, what method have you used?

[gtpkeeper]

When you say you've slugged the bore, what method have you used?

hi
first tap lead ball down the muzzle ,
second one from chamber side

[loiner1965]

Ok so what size do you think

.314 gas checked and lee alox lubed

[waterford103]

I'm done with casting lead bullets , done way too much , I buy bullets for my 303 from dodgyrog sized exactly to my bore , my bore is 313" and in good condition so I buy .314 bullets . Don't shoot lead bullets after jacketed without de-coppering the bore scrupulously , if you fail to do this any groups you achieve will be of the shotgun variety.