.303 blanks

[Attilla]

Bought a #1 with grenade can and want to launch tennis balls at the neighbors car, dog, etc. I know somebody out there has figured out how much powder to load and what works best to cap the casing with.
I intend to start with standard .303 brass
Whats the load and what range are you getting with sand filled tennis balls?

[Attilla]

I know somebody out there has this info in their head.

[Schuetzenman]

Not me man, I don't have the grenade launcher models. All I can tell you about blanks is that you can find them at Navy Arms. But I think I remember they are corrosive. Otherwise you're on your own to blaze the trail to knowledge.

Give us a report after you find out!:D

[elkydriver]

this is out there, but maybe try a fireforming type charge with it. ie, a really light charge topped by cream of wheat to fill the case. i cant guarantee results, but it would be worth a try