Ok, Most of you fellas know i have only been shooting rifles for a little over one year. I am not stranger to shooting sports, as i had a nice semi successful shotgunning adventure, before i developed this rifle sickness. LOL! What i am wanting to know is how one action has the POTENTIAL accuracy gain over another, just because its a couple thou tighter? Ill try and brake this down. I am wanting to have one 600 yard comp rifle. I want it to be a real nice one, so i want to do this correctly. I am going to sell all others to build this one rifle. I am looking at a stiller P-1000 action. This action is a dual port action spin off of the stiller predator action. After talking with Curtis at stiller i learned that this action isnt quite as tight as there dedicated Bench rest action. I dont know were they measure the tightness of these action ( i assume in the lock-up) but the P-1000 is somewhere between 3-5 thou loose or slop or whatever term you want to use. I was told that there regular mag feed predator actions are between 4 and 6. This p-1000 action is a big action and it looks like it would be a dandy action. I just purchased a BAT SV RB LP action with a new HV Krieger 6.5x47L barrel, and i cant decide if i should use this action or sell it? I dont know how tight these BAT actions are but i would think that it may be closer to 2 or 3 thou of slop. Thats what i was told by a fella anyway, i dont know this. The BAT SV is a smaller action but i think it would be fine for this 600 yard rifle project i want to do. So what i would like to know is if all else is equal ( lets just say it is) will the stiller action that has 3-5 thou of play be as accurate as a BAT SV with closer to 2 thou of play, if in fact thats the truth? How important is the tightness of an action when we are talking numbers that are already pretty darn tight. IS a thou or two that much difference on down range performance? I could probably sell this little BAT action for the same money it would take to buy the new stiller dual port P-1000, but is that not a smart move, thats what i dont know. I know BAT is an outstanding action, but the stiller actions are no so bad either. I dont think the 6.5x47L is the chambering i want to stick with, but if i keep or use this BAT SV action i will just have to see how it shoots. I was wanting to do a Plain old 6BR but thats another subject. So keep the little action or go with the much bigger MAYBE a little looser stiller dual port action, thats my question i guess. I have a couple nice rifle that would work for 600 yard shooting but i want to play with just one rifle for this discipline. I want it to be right, so i dont have to second guess my equipment. My little BAT may need a new firing pin as it doesnt sound as strong as my new BAT SV action thats on my ppc, so i am already second guessing it. I know it can be fixed if there is an issue, so i shouldnt let that bother me. I also think because its so small i second guess it. Like i said i want one gun and i want it right. I know i talk to much but i dont have anyone to confide in around here that shoots the 600 yard game, so i have to turn to you fellas. Heck I even thought about just buying a big BAT action and be done with it! I just wish they weren't so expensive! LOL!! Thanks fellas I really enjoy hanging around with you fellas! Lee