.303 Load

[kennyc]

Cast Bullet Basics For Military Surplus Rifles
By C.E. Harris Rev. 9-6-93

Cast bullet loads usually give a more useful zero at practical
field ranges with military battle sights than do full power
loads. Nothing is more frustrating than a military rifle that
shoots a foot high at a hundred yards with surplus ammo when the
sight is as low as it will go!

Do NOT use inert fillers (Dacron or kapok) to take up the excess
empty space in the case. This was once common practice, but it
raises chamber pressure and under certain conditions contributes
to chamber ringing. If a particular load will not work well
without a filler, the powder is not suitable for those conditions
of loading.

Four load classifications from Mattern (1932) cover all uses for
the cast bullet military rifle. I worked up equivalent charges
to obtain the desired velocity ranges with modern powders, which
provide a sound basis for loading cast bullets in any post-1898
military rifle from 7 mm to 8 mm:

1. 125-gr., plainbased "small game/gallery"
900-1000 f.p.s., 5 grains of Bullseye or equivalent.

2. 150-gr. plainbased "100-yd. target/small game",
1050-1250 f.p.s., 7 grs. of Bullseye or equivalent.

3. 150-180-gr. gaschecked "200-yard target"
1500-1600 f.p.s., 16 grs. of #2400 or equivalent.

4. 180-200-gr. gaschecked "deer/600-yard target"
1750-1850 f.p.s., 26 grs. of RL-7 or equivalent.

None of these loads are maximum when used in full-sized rifle
cases such as the .30-40 Krag, .303 British, 7.65 Argentine, 7.7
Jap, 7.62x54R or .30-'06. They can be used as basic load data in

[jedburgh]

Thanks for your help .
Regards .