roger7252000
Inactive
Where can I find a good ballistics table with 155gr Sierra HPBT, in .308 with a velocity of 2759 with zero at 100m using Win Carts.?
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.308 Velocity tables, which clever chap knows where a good set are?
- Thread starter roger7252000
- Start date
JBM is a good one, but you need to know what your muzzle velocity is not what the manufacturers published speed is. Every rifle is different so you need to run your rilfe across a chronograph if you haven't already to get an accurate ballistics chart. Without doing that it is pretty much a shot in the dark as to how accurate the ballistics table will be.
roger7252000
Inactive
.308 Table
Many Thanks,
Not fired my .308 yet, only got it last week and have just finished making some Ammunition. How much would you pay for a Chrono?
Many Thanks,
Not fired my .308 yet, only got it last week and have just finished making some Ammunition. How much would you pay for a Chrono?
Depends on what model you buy I've got a Chrony Beta Master, and I bought it new in box for $75 US off of another forum it usually retails for around $135 new. I don't know what you have access to in the UK as far as chronographs. I'd see if your local gun club has one that you can use or if anyone there has one they will allow you to use.
I like this one. http://www.hornady.com/ballistics-resource/ballistics-calculator
But as JerryM says, unless you have a chronograph to actually measure velocity it is only an educated guess. It is very common for 2 different rifles to shoot ammo from the same box to different velocities, even with the same barrel length. Around 25-50 fps difference is quite common, but I've seen as much as 130 fps.
But as JerryM says, unless you have a chronograph to actually measure velocity it is only an educated guess. It is very common for 2 different rifles to shoot ammo from the same box to different velocities, even with the same barrel length. Around 25-50 fps difference is quite common, but I've seen as much as 130 fps.