We shot the .25cal.sumatra 500cc air rifle today,using the 50gr.LBT flat nose airgun bullets 3000psi. fill.Groups at 50yrds.on low&med.power,less than 1in.High power was the best 1/2in.or less."Almost"pure lead,no lube.The sumatra will now perform like the 22lr.out beyond 70+yrds.But gives better penetration.Just playing around,we shot a 2x4 at 50yrds.These bullets shot through on low,med.&high power.As the 22lr.will kill anything,with a well placed shot,this bullet and rifle can put a lot of meat in the freezer.A lot of people in this nation and abroad,cannot own firearms,these weapons can feed&protect them.