BountyHunter
Well-Known Member
Re: What is a \"Ladder Test\"?
Recommend that you keep the jump in powder increments to no more than .3 gr. If you use .5 you can skip over a node completely.
You are looking for 3-4 bullets to group together AND have similar MV. Both will group together normally to indicate the node.
I use either .2 or .3 grain increments over that 4 grain range and normally find about 3-4 nodes.
You will find that the groups normally match similar grouping of MV. That is your node normally. A chrono is an absolute must.
You can fine tune from there and I normally try to pick a powder weight in the middle of the node with the target MV that I am looking for. That way I am not subject to groups deteriorating on a hot day etc.
BH
Recommend that you keep the jump in powder increments to no more than .3 gr. If you use .5 you can skip over a node completely.
You are looking for 3-4 bullets to group together AND have similar MV. Both will group together normally to indicate the node.
I use either .2 or .3 grain increments over that 4 grain range and normally find about 3-4 nodes.
You will find that the groups normally match similar grouping of MV. That is your node normally. A chrono is an absolute must.
You can fine tune from there and I normally try to pick a powder weight in the middle of the node with the target MV that I am looking for. That way I am not subject to groups deteriorating on a hot day etc.
BH