I have used two partner presses, have for years. It would be hard to imagine not reloading at the rifle range while shooting, making changes to the load as needed. Not using a wind flag is like shooting blind.
When I lived out West, I had a camper shell that extended 6-8" over the top of the cab in height. I had cabinets made inside and a small bench on one side of the camper. A rock chucker was attached to an extension that came out of the Hitch on the back of the bumper. RCBS 10/10 scale was set up in side with Partner presses mounted with C clamps on the bench top.
Jackie's suggestion on the RCBS Charge Master Lite is pure GOLD! This little scale solves most of the problems of getting set up to load at the range.
RCBS, the world leader in powder dispensing is proud to announce the ChargeMaster Link. The Link is built off the rock-solid load cell and electronics...
www.midwayusa.com
I was in a predator calling club that had up to 120 members. When we did not have a club hunt going on, guys were at the range shooting, maybe as many as 20 of us at a time. Several other guys set the camper shell on their trucks, similar to mine or better. When a guy would get a new rifle, one /two of us would load for him while he shot. IF he was new and wet behind the ears on loading and shooting, we did all work for him, then taught him the ropes, but the goal on a predator rifle was 1/2" at 200, which was no problem at all with a custom barrel in 22/250,22/250 AI, and 243 Win. Several of us shot Benchrest when there was not a Club Hunt going on. We had a rifle cleaning station set up also, went through the procedures of cleaning, which few if any knew anything about.
The time and effort spent to get set up to reload at the rifle range is well worth all effort.
If you do not have out a wind flag, it is like shooting blind...trust me on this, even for varmint and deer hunters. Bullets move in the wind, no getting around that fact.