Thread: What happens when your case has lots of room left?

Ive had loads of win 760 that were done for me by sports shop..110grn projectiles and I asked for about 3000fps....if I didnt tip rifle to sky before squeazing trigger they went BA...BOOM it was VERY off putting and did terrible things to accuracy and flinchyness.... Ive remade same loads with a little more powder in them and they are lazer beams without issue...either the powder he used was ???damp/old n stuffed....or the lack of powder was causing it....that they would work if muzzle pointed skywards first suggests the second...