Yeah , I had to run to the other side of the house to see the rest of the photo
Guys I’m really sorry about the pictures. [emoji22][emoji3064]
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Yeah , I had to run to the other side of the house to see the rest of the photo
To beat the dead horse, FMJ military ball ammo is made with a copper jacket cup that has an open base. The lead is inserted and the jacket is swaged.
Variation in jackets,cores,and manufacturing show up in the bullet base.
As Unclenick's photos show,the variation in bullet bases is considerable.
The base of the bullet plays a major role in bullet accuracy.
Match grade and hunting bullets have the jackets formed with a closed base. Te lead is inserted from the front,then the bullet is swaged.The bullet bases can be far more consistent this way.
It seems you bought a rifle in the interest of accuracy.. I don't know exactly how many rounds of peak accuracy your barrel will deliver, but a ballpark guess of 5000 rounds might not be far off.
You bought 500 rock blasting dust puffing go bang bullets.
Do you want to use up 10 % of your barrel life shooting them?
If you want accuracy for the sake of accuracy, start with a good match grade bullet. You get to have fun picking one.
One of the reasons ball powder is used for military powder is the machinery loading the ammo can be run at a higher speed as the powder flows like water.
The shape of a powder granule is part of what controls burn speed. The little balls would burn as fast as pistol powder if they were not heavily coated with inert retardants. Those tend to leave fouling which can compromise accuracy.
I'm not a match shooter. You have some on this thread helping you. I can say after informally testing several powders for 308 accuracy, Varget was our choice. Others have had great success with 4895, 4064, etc.
I don't know today's recipe, but for a time the Army loaded RE-15 behind a 175 gr match bullet for sniper ammo. I suggest RE-15 might be worthy of a try. Some say it might be Norma N-140 but I don't know that.
If what you are pursuing is tight little groups.....no put down here, but you might make some progress with your bag setup.
Stacking front bags on your rifle case and not having a rear bag at all seems like an opportunity for improvement. so long as you are evaluating the rifle and the load.
trigger45 said:Some are range between.308 and .309.
trigger45 said:This is my first .30 caliber. But have been reloading for 35 years. Never ran into bullets this out of spec.
UncleNick said:The military and SAAMI spec is 0.3090"-0.003" or 0.306-0.309" Yours are way tighter than that.