5 rounds will give you an idea but I like to do around 10 rounds to get a decent idea of velocity for my ballistic program and ES/SD. I have my Magnetospeed on a mount so I can just leave it on when shooting if I like but if testing I load up 5 and then find what looks good and then load up more. For factory ammo I'd just shoot 10 rounds and use that. Different lots of factory ammo will give different velocities. I am sure you will get people in here that will tell you to shoot 50 or 100 rounds but never saw that need.
First go around when I'm still developing a load five rounds, once I'm getting close to an ideal load and am going to use fps in a ballistic program I do ten rounds.
America is at that awkward stage, it’s too late to work within the system, but too early to shoot the bastards....Claire Booth
Originally Posted By 50-140: First go around when I'm still developing a load five rounds, once I'm getting close to an ideal load and am going to use fps in a ballistic program I do ten rounds.
When I shoot metallic cartridges, 5 minimum and prefer 10.
When I shoot a muzzle loader or my buddy is shooting his smokeless muzzle loader (yeah, you read that right) it is 3 or 5 rounds.
'Thorry, thur, but Igorth do not “tetht the printhiple”. Thtrap it to the bench and put a good thick bolt of lightning through it, thatth our motto. Thatth how you tetht thomething.'
I use a Lab Radar. Factory Hornady Match 6MM Creed 108 eld ( all the same lot). Five shot average allows me to shoot five inch groups at 1000. Good enough for a 70 year old.
I am going to try 10 rds next time but I think I am okay with the 5 rd sample for now.
I have a "long range" shooting class coming up. It is part of the process to certification for use of my club's 600 yard range. I know that is really medium range but it is still twice as far as I have ever shot.
Originally Posted By BustinCaps:
Shooting and riding snowmobiles isn’t as fun when your property is sporting a 70’s porno bush.
I agree ten rounds is sufficient. But I do five rounds at three different temperatures usually 85,60 and around 35 degrees. That way I don’t have any powder sensitive surprises. It has taught me that certain powders can be temperature sensitive especially ball powder.
Chicken Farmer by choice hunter of shade tree's and hiding spots by nature.