Barnes 140 grain tsx in 270 win and vectan tubal 7000. I have 4 lb of tubal 7000 and would like to know a starting point for loading.

[Bartman]

Would like to know safe starting point for vectan tubal 7000 using Barnes 140 grain tsx for 270 win

 

[Heavy Barrel]

The Vectan Tubal 7000 sits between Alliant Reloder 17 and A4350 per the burn rate chart.

 

[Bartman]

The Vectan Tubal 7000 sits between Alliant Reloder 17 and A4350 per the burn rate chart.

View attachment 28125

Thanks for the Info. I was able to find vectan data on Graf and sons. But not for 140 grain specifically. I did however start cautiously low at 48.6 grains which is the starting load for their 135 grain data. I worked up in .5 grain increments till I got to 51.1 at which time my groups opened to 1.25 and case head increased size by .001”. But at 50.6 grains I had a .75” group and no head expansion. I have no chronograph or reloading software and am shooting a left handed abolt ii with 22” barreled boss and have not tuned the barrel to the round. If someone with software could tell me my approximate velocity I would appreciate it. I hope this info help folks that have this little known powder.

 

[Bartman]

Thanks for the Info. I was able to find vectan data on Graf and sons. But not for 140 grain specifically. I did however start cautiously low at 48.6 grains which is the starting load for their 135 grain data. I worked up in .5 grain increments till I got to 51.1 at which time my groups opened to 1.25 and case head increased size by .001”. But at 50.6 grains I had a .75” group and no head expansion. I have no chronograph or reloading software and am shooting a left handed abolt ii with 22” barreled boss and have not tuned the barrel to the round. If someone with software could tell me my approximate velocity I would appreciate it. I hope this info help folks that have this little known powder.

Thanks Heavy Barrel