Anyone here into firearms?

synolimit · 03-12-2015, 01:04 PM

Quote:

Originally Posted by Rusty

My AR has a 16" SS bull barrel. I normally clover leaf my groups at 100m's. At 500m's, on a good day. I can shoot 2" groups. My buddy can shoot my AR out to 700m's no problem.

I use either the Sierra 69gr Match or the Hornady 68gr Match bullets, with Norma brass, CCI 400 primers. I want to try the Berger 70gr VLD bullets next.

But what are you looking for with your reloads? Just accuracy or speed also as you test so you know it's not only on point but can also knock something down.

Rusty · 03-12-2015, 10:01 PM

Quote:

Originally Posted by Scott@Synergy

But what are you looking for with your reloads? Just accuracy or speed also as you test so you know it's not only on point but can also knock something down.

Speed and accuracy kind of go hand in hand up to a point. Then you start to over-drive the bullet. Work you reloads up in .5gr increases. Load 10 up at what you think is the lowest amount of powder. Then load 10 more at .5 gr increase and so on up to the max load. Start shooting each load and take notes on the group size. You should notice the groups getting smaller. Once the groups start to open up. you know you have found the load for the rifle, brass, powder, bullet and primer. Change any one of those, and you will have to start over. Also keep an eye out for over-pressure. It helps if you have a chrono to measure your bullet velocity. Once you know your velocity. You can look up in your ballistic tables to see at what yardage the bullet goes sub-sonic. At that point, most bullets become unstable. A .22 cal with a BC of .305, and a velocity of 2,900 should be stable out to 700~800 yards. Another thing too. Is barrel break-in. You got to shoot about 200+ rounds through it before getting down to brass-tacks. If you can't put it on target, forget killin' it.

You punching paper, or killin' something?

If you want to knock something down on a regular basic. Get something bigger. A AR chambered for a .243 with a Hornady 105gr A-Max. Has a BC of .500. which is better then any .22 cal bullet.