TAJ45
Silver $$ Contributor
I've posted this on Saubier but thought I may catch a few extra constructive comments here.
I just read everything in the "17 or 20 BR" thread on Saubier.......I did see a mention of the 47 Lapua necked to 20. This is why I asked for a decent print of the 6.5x47 y'day.
Overall idea is to increase powder capacity in the short,fat 20 BR but not to the extent of a full length 47L or say a 22-250. I guess with my general criteria, a 22-250 case will work as well in the parenting role. Yes, the small primer and Lapua brass will be a nice option for those "needing it".
OK, just a wildcat's newbie ruminations here so don't run me off the board on a rail (I know you guys won't, that's why I'm posting).
Parent case 6.5x47L or 22-250 but push the shoulder back substantially - say .200 or so - maybe more. Looking for another 3-5gr capacity over the 20BR AI.
Shoulder angle? Left up to shooter for his use: less for repeater/feed or more for single loading.
Leave a lot of neck length.....maybe .450" or better. Purpose: to be able to reach lands with ANY pill. Also this theory of the convergence point on the center line being behind the base of the bullet being more accurate and or increasing bbl life? Anything to it? I've thought about the .222 and that is a pretty shallow angle. Of course not much powder being burned either..........maybe just answered my own "hmmm".
For twist, I'm personally leaning toward 11 or maybe 10 hoping to find several someones actually producing some pills in the mid 40s. I thought I wanted to push those 55s FAST but from the thread mentioned above, it may be just one highly probable headache. Maybe the 12-15% redux in wgt and the easier twist would do the trick?
Whatcha guyz think?
I just read everything in the "17 or 20 BR" thread on Saubier.......I did see a mention of the 47 Lapua necked to 20. This is why I asked for a decent print of the 6.5x47 y'day.
Overall idea is to increase powder capacity in the short,fat 20 BR but not to the extent of a full length 47L or say a 22-250. I guess with my general criteria, a 22-250 case will work as well in the parenting role. Yes, the small primer and Lapua brass will be a nice option for those "needing it".
OK, just a wildcat's newbie ruminations here so don't run me off the board on a rail (I know you guys won't, that's why I'm posting).
Parent case 6.5x47L or 22-250 but push the shoulder back substantially - say .200 or so - maybe more. Looking for another 3-5gr capacity over the 20BR AI.
Shoulder angle? Left up to shooter for his use: less for repeater/feed or more for single loading.
Leave a lot of neck length.....maybe .450" or better. Purpose: to be able to reach lands with ANY pill. Also this theory of the convergence point on the center line being behind the base of the bullet being more accurate and or increasing bbl life? Anything to it? I've thought about the .222 and that is a pretty shallow angle. Of course not much powder being burned either..........maybe just answered my own "hmmm".
For twist, I'm personally leaning toward 11 or maybe 10 hoping to find several someones actually producing some pills in the mid 40s. I thought I wanted to push those 55s FAST but from the thread mentioned above, it may be just one highly probable headache. Maybe the 12-15% redux in wgt and the easier twist would do the trick?
Whatcha guyz think?
