Re: 100yd load development for long range shooting?
Development at 100 is a starting point for longer range shooting. You can develop a load that will give the smallest grouping at 100. Having a chrono is big plus and they are essential for load development to do a Standard Deviation comparison as well as velocity.
Having rounds that shoot at in a single digit SD SHOULD shoot well at a distance. It is essential to find a place to shoot your developed loads over the distances you would expect to hunt in to verify this though. Iíve had loads shoot well at 100 only to have them start to open at 200 and go further apart from there.
I donít know where you live, but is there no farmland close by you where you could work a deal with the farmer to try some loads over a distance. This may mean after this hunting season though. This is when I do my verifications and drop charts for next year hunting season after this yearís season.
Yes you can start development at 100 but you need to verify bullet flight and POI at given ranges.