Bullet weight

[ed35w]

Hi.
I've been developing a 303 cast bullet load. My bullets are sorted and wieghed to between 194.4 grains and 194.8 gr's. My question is, is this much effort going to make any real differance in my group size? Right now I'm holding a 1 3/4" group at 100 yards. Anybody have some results to share.
Thanks. Ed.

[leftiye]

Probly not.

[dubber123]

Weigh some factory boolits/bullets sometime. I bet you will find alot more tha 4/10th of a grain variance. I sort my boolits by appearance, base and fill out. If super serious, weighing is a good idea. I highly doubt a couple grain difference will be noticeable by most shooters. A square base I believe to be the first consideration in a good boolit.

[StrawHat]

On a 200 grain bullet, 1 grain is .5 per cent of the weight.

You are dealing with +/- .2 grains. I doubt you or I could hold good enough to tell a difference.

The target certainly won't know!

[dromia]

Shouldn't worry about that variation.

You could put up some loads with the lower weight and some with the higher and compare the group size/footprint to POI see if you notice any difference.

Consistent, you can do that every time out, 1 3/4" groups are good going for a miliary rifle if thats what your shooting, the speccy was to hold 4" groups with J word issue ammunition.

I can usually get them down to 2" in my enfields so long as every thing else is right and the barrel isn't shot.

In a few I can get the magical 1" but they have new barrels.

Have you done a chamber cast/slug as boolit fit is the key.

[HORNET]

IIRC, the first Sierra manual said that they held weights on their matchking bullets to +/- 0.3 grain. Lots of records set with Sierra's.