Adjusting tune from one shooting club to another

[Northridge]

My question for those competitors that are shooting many shooting clubs over the course of a season. For those that are chronograph users or implement it's info in there tuning regiment from club to club, say shooting club one is 4500 ft above sea level and club two is 2000 ft above sea level and you have a tune for each club. Do those two tunes seam to line up in relation to velocity, meaning when you find your adjusted tune for a new club is the velocity even close or completely in a different spot. Is your seating depth close or out in the north forty? Considering air temp is close club to club was your charge weight adjusted some or a lot? As a season progresses and barrel wears in tune will adjust to achieve optimum accuracy I'm just interested in geographic affects on the topic.

Shawn williams

 

[DBailey]

Excuse me for asking, but what kind of shooting competition are we talking about?

 

[Northridge]

600yds to 1000yds benchrest & f-class

 

[DBailey]

I don't shoot benchrest so I can't help you there.
I have shot a little F-Class, and I can tell you that if your load requires tuning to shoot the same with a 2,500 ft altitude change you've picked the wrong load.
Instead of shooting the hottest load you can, shoot the node with the widest charge weight window available and it will work no mater where or when you shoot. Occasionally adjusting the seating depth as the barrel wears is usually all that is required.

 

[Scott Harris]

I don't shoot benchrest so I can't help you there.
I have shot a little F-Class, and I can tell you that if your load requires tuning to shoot the same with a 2,500 ft altitude change you've picked the wrong load.
Instead of shooting the hottest load you can, shoot the node with the widest charge weight window available and it will work no mater where or when you shoot. Occasionally adjusting the seating depth as the barrel wears is usually all that is required.

+1 I look to maintain consistent velocity across different locations and that is mainly a temperature discussion. For example, if going from hot Phoenix (100+ temps) to an area with 50 degree temps, I might put a little more powder in the case. More importantly, as David says, be careful taking a hot load from a cool climate to a warm climate. This causes the most problems. That's all the "tuning" I do.