My POF 14.5" p415 was shooting 1-11/4" groups with about every load I tried in 40 gr NBT and 60 gr vmax. I had one load..25 gr of benchmark with the vmax that shot .4". I removed the 4.5 lb POF trigger and installed a 3 lb timney. The same group cloverleaved and shot a .3" group with my first three shots at 200 yards. Triggers make all the difference in the world. I almost bought a 308 oracle. I watched some guy shoot a fist size group or smaller on YouTube at 500 yards. I believe along with a light trigger, the right load, a solid rest, and enough of magnification will get you under a half inch group. You just have to put in the time to tinker. I've shrunk loads just buy changing to higher magnication. I know I'm going to start an argument with "that guy" but When your trying to shoot for groups that all go in the same little hole consistently at a 100 yards 9x and under just doesn't cut it IMO. Don't get me wrong, I've shot .4" groups with my 3x9 leupold on my Remington 7600 at a 100 yards with my reloads but it's the cross hairs are like barn boards covering up the target at 100 yards. You can always Switch to a lower magnication optic for hunting after load testing if needed. My favorite cheap optic is a Nikon 4.5x14 40mm prostaff 5. It's been my go to optic for testing the last couple years. pick your bullet and load it up and down in .2gr increments with about 3/4 powders from min to max load. I will guarantee you will find at least one load that will shoot quarter MOA or less with a three shot group. I don't shoot 5,10 plus groups because I will never have the opportunity to shoot that many times at animal in most hunting senarios. You'll always get a poster or two that has to justify his $1000/2000 barrel saying you need to...no you don't...you need to just shoot three and test. The first three are going to tell you if you have a good load or not. If you do you can always waste more ammo to satisfy not yourelf but other posters needs. My cheap bushmaster targeter varminter will put 5 shots all in one hole you can cover up with a dime at a 109 yards with 40 NBT that will measure high.3's I put a 2 lb trigger in it at the time. The biggest issue is the gun gets blamed most the time because the shooter is incapable of doing their part. Always get a kick out of the phrase...every one in a while you get a shooter...or you must have got a shooter...when someone shoots a light group with a production off the shelf rifle. I believe there are are a lot of duds out there but aLot more shoots in the wright hands. You could let 12 people shoot your gun and I bet there would be 12 different results with the same load.