28nos and Hammers

[Kmccord]

I am going to disassemble the few remaining loaded rounds and start over a grain or so lighter/next node down. it was really too hot for any weather, but it is very accurate. Not worth the hassle though, they will shoot just as well a little slower.
I shoot the 195 Elite Hunters with H1000. Also very accurate.

I had burnt about first 1/8" of my throat chasing speed using RL33 and 195 gr Berger, they were very warm loads. I decided to drop down to Hammer when Berger became scarce, with my 1:8 twist at our sea level, I dropped to 169gr. and a cooler powder.

 

[RockyMtnMT]

Have a 1-8 and plenty of n570, any idea on a starting point ?

I would start n570 at 81g and work up from there.

 

[sika64]

I would start n570 at 81g and work up from there.

Thank you

 

[Northkill]

Please let us know how you make out with it. I'd love to hear some reports on that bullet.

 

[sika64]

Please let us know how you make out with it. I'd love to hear some reports on that bullet.

Will do, I have to order some this week and getting ready for load development for the 195 berger and these

 

[Rich Coyle]

sika64,

I have a 7mm wildcat a little larger than your cartridge. I use HHT132. They run about 3,665 fps.

 

[Northkill]

sika64,

I have a 7mm wildcat a little larger than your cartridge. I use HHT132. They run about 3,665 fps.

Is yours the 7 Allen Mag?

 

[Rich Coyle]

Northkill,

Mine is a 338 Remington ultra mag neck down to 7mm. I use 7 ultra mag brass so I can get an extra .100" neck length. It holds 109 grains of water.

 

[Northkill]

Rich, that is a great design and a lot of performance. I do have a Kirby-built 7 Allen Mag. So far, it's been running the 150 BD2 at near 3,700 fps with 106 gr RL33. Going to try something new this year if I get the chance to get it together. The BD2 isn't built for that velocity and the terminal results are a bit erratic, though it is accurate. Hoping to run a mono with less engraving pressure and maybe move to Retumbo for less throat erosion. We'll see.