|Originally Posted By JimJones:
Well right now Im concerned with getting my iron sights set up. The rifle is my M1A and I am currently zeroed at 25 yards. I would like to know where at down range that intersects with? Because the last time I took the M1A out shooting I was shooting at what I would estimate probably around 250-350 yards and it seemed like I was shooting 1-2 feet low.
Rather than messing around with my rear sight knob I was just practicing on estimating hold over.
I don’t currently have a scope Im on the waiting list for a LRB Arms M25 receiver that should be ready in the next couple of months once I get the receiver the scope that I am planning on using is the Swarovski Z6 1.7 – 10 x 42 with the ballistic turret. Swaro Z6
What I like about this scope is you can easily switch your zero to 3 different ranges by adjusting the turrets on top of the scope. This is why I am wondering what the rainbow curve of the 308 is. I was planning on setting the first one for whatever the 308 equivalent to the 223 IBSZ and then using the other 2 settings for 400 and 500 yards.
What ammo? What velocity? What height over bore?
If you have those, you can plug it into the JBM ballistics calculator and it will show you the drop, which is pretty darned close.