After shooting 10 different Brands and Flavors I decided to Sort Federal Auto Match. From a brick of 325 I counted out 100 and weighted them. Results: 15 - .117 oz 69 - .118 16 - .119 Is this the reason I can shoot a 5 shoot group with 3 tight and 2 tight but as much as .25-.35" at a different POI ?? I then pulled out all 10 Brands/flavors. I counted out 25 of each and Results: Aquila Standard - My bullseye pistols like these. Rifle also shoots them pretty good. Groups are good. Weighed mostly .118 with a few .117 Aquila Super Extra - Rifle shoots em Great. Weighed .116, all of em. Eley Tenex Pistol Match - Shoot tight. Weighed .117, all of em. Eley Edge - Great Groups - Weighed almost all .117 with 1 at .118 CCI Standard Velocity - Another good grouped out of my rifle. Weighed .117 with a few .118 CCI Blazer - I would say shoots next level down from the above, still good. Weighed .117 and a few .118 Remington Sub Sonic - About same as Blazer, maybe a little better. Weighed .112 a few .111 Thunderbolts - Weights all over the place, .116 to .120 Lightning - Weighed .119 with about 1/3 at .120 Federal Hi-Power - I got these from my father-in-law. How Old .... price tag on them is $1.24. All weighed .120 All bullets were 40gr lead Round nose, with the exception of the Rem Subs, 40gr lead HPs. These all shot thru a Savage MK II Heavy barrel off the bench at 25 and 50 yards. I also have some CCI Tactical and Rem Golden bullets. They are plated bullets and don't do well. I didn't weigh them. From these results confirms the BEST SHOOTING rounds are consistant in weight. My gun seems to like the .117 best. I will take the 100 rounds of sorted Auto match and shoot them separate and see if I can get rid of the flyers in groups. I have about 3,000 rd of it and would like to be able to use it for matches.