Thread: 6.5 STW case and load development.

80 grains powder, wow !

Originally Posted by 257weatherby

7mm Mag has a short neck, doesn't burn out throats in short order. Neck length isn't a factor in throat degradation, fast loads, faster hot powders and strings that allow high continuous throat temperature are the main culprits. I think people make too much out of "short throat/barrel life". They are still making barrels. You are hereby invited to build a 6.5 300 Weatherby and race me to barrel life endex.

Maybe Kiwi Greg could comment on that.

Absolutely

Just say you have a hunting rifle that has a big case behind a small calibre burning 80-100 grains of powder

Just say it has a 500 round life which is really pretty short, most would be much longer if looked after.

If you use 100 to get it going that leaves you 400, if you fire 40 rounds per year hunting, (which is more than most would) that should be 20-30 animals a year & 10 years of hunting.

Most guys wouldn't keep a rifle for 10 years ????

A re-barrel is only costs about the same as filling the Hilux 12 times

What are you filling your hilux with?

Originally Posted by MSL

What are you filling your hilux with?

Smelly old Diesel

Cases all blown out and now the real work begins! 90gns of 50BMG gets just over 3400fps from the formed case, but the plan was always to use the 50 powder to form and ADI2225 to chase outright speed, once I get hard bolt lift, then back it off a fraction and start chasing grouping at 110 via bullet selection and seating depth, the 130 GK was only to form the cases and pressure test.

The first 2225 test got me better than 3500fps with the Sierra

Not a bad start.