Recent content by HNDLDR

7828ssc is one of my favorite overlooked powders. It may be a little Temp sensitive. I use it in my 25-06 under the 90gr Absolute hammer bullets. It should do well under the Barnes.

Welcome to the forum. What caliber are you building?

Love the 25 caliber! Congrats to the hunter!

Still have a few one pounders of it.

Absolutely nothing.

As was mentioned Butte is a mining town with a lot of Irish decent. The drunk Irish miners have manage to keep a lot of the out of state leftist ideas out. Most other bigger Montana cities are not so lucky. Kalispell, Helena, Missoula, Bozeman have all gotten pretty bad. Billings isn’t terrible...

For any of you who are still wondering about the 6mm Arc in a gas gun, I stand corrected. The Arc has a larger case head then a 5.56. The bolt has to be machined out to fit the larger case head. The reduced material coupled with the higher bolt thrust from the larger surface area has broken the...

Was it Superformance ammo or Superformance powder in hand loads? Quigley257’s link in post 29 does an excellent job of explaining issues with Superformance in gas guns.

It’s not that the bolt gun architecture will safely handle more pressure. If you completely closed an adjustable gas block on an AR and ran it like a bolt gun it would handle the same pressure as a bolt gun. Where you run into problems is the gas gun is taking pressure at a certain point of the...

And yes changes in ammunition like bullets taking up more space in the case. (Reduction of case capacity) will increase pressure to unsafe levels just the same as it will in a bolt gun.

The AR platforms have steel locking lugs locking directly into a steel barrel and can handle the same pressures as a bolt gun. They do however have to be timed properly so the bolt is not opening too soon. If not timed correctly this is what beats up brass and can damage rifles, especially...

I agree with all that have mentioned over gassing. The Hornady article explained this well. The AR10 style guns with smaller bores (243s my 7mm-08) tend to amplify this issue, especially with slower powders. The only thing I might add is if the adjustable gas block adjustment is too coarse maybe...

So no one has information for a study or something that has plotted this with pressure equipment. I’m not saying it’s wrong as I have no way to test it. I was just trying to understand why my brass seemed to show less pressure sign the second time.

On the subject of brass being formed to the chamber. Most cartridges I’ve payed attention to (7mm-08, 25-06 and such) gain about 50fps, with the same load, going from virgin brass to once fired. I would think in your case there would be even less of a change going from once fired to twice fired...

I share this every time one of these bear discussions come up.