December $487 prefit group buy, several barrels are a go

[IrkedCitizen]

Where does a 20' 6PRC put you at 1800 fps, and what's the estimated barrel life?

Probably 10 miles with a 20 foot barrel

 

[TimberHunter]

for 223 ai, 18” barrel. Loaded long. Middle of the road pressures should be close to:
80: 2800
88: 2725

That’s impressive… with the 88’s at 2725, it keeps above 1800 fps out to nearly 800 yards at 7800’ elevation 30 degrees. Here I was thinking I wanted to put together a 6cm/243 to shoot 95’s….


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[43.6N]

That’s impressive… with the 88’s at 2725, it keeps above 1800 fps out to nearly 800 yards at 7800’ elevation 30 degrees. Here I was thinking I wanted to put together a 6cm/243 to shoot 95’s….


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Take it with a healthy grain of salt. 88’s have proved very temperamental for most people trying to reload them. It will likely hit that velocity, but no guaranty that the groups will be tight enough to use. The 80’s and 75’s eldm have been very consistent and easy to load for in the barrel I got from LS with the 223 wylde throat.

 

[TimberHunter]

Take it with a healthy grain of salt. 88’s have proved very temperamental for most people trying to reload them. It will likely hit that velocity, but no guaranty that the groups will be tight enough to use. The 80’s and 75’s eldm have been very consistent and easy to load for in the barrel I got from LS with the 223 wylde throat.

Thanks for the heads up. Running the numbers on 80 at 2800, that puts it past 700 with 1800 fps. The wind bracket isn’t as good and it doesn’t lineup with quick drop too well. Still very tempting though…


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[The Guide]

Whats the advantage of UM 30 vs 40?

No fireforming with the 30⁰.

Jay

 

[wind gypsy]

For my own education/knowledge - are there other chamber/throat specs for the 6.5 prc?

Yeah. Alex wheeler (AW2) chamber is the most common one that is a couple thousandths wider at the web than saami min. There’s always various throat lengths but in general hornady throat specs align with what most guys were spec’ing for custom reamers on older cartridges they wanted to shoot heavies in anyway.

 

[Jaegerr]

For the guys doing 223 ai, I'm curious why not just go 22 ARC? I know theres +/- $100 in bolt work, but then you get better everything else save barrel life.

Also, no one else wants to try 300 super wsm?!?

View attachment 975115

I asked a few questions on here about going it and wanted to because I liked Barnes LRX’s but I’d check on from someone more knowledgeable than me because I think you’re gonna run into COAL issues in a Tikka action. If it feeds in the action then you’ll 100% need a longer mag if it’ll fit.

 

[wind gypsy]

Where does a 20' 6PRC put you at 1800 fps, and what's the estimated barrel life?

Depends on bullet, muzzle velocity, and density altitude. But roughly way the fook yards past where people should be shooting at animals.

 

[43.6N]

Thanks for the heads up. Running the numbers on 80 at 2800, that puts it past 700 with 1800 fps. The wind bracket isn’t as good and it doesn’t lineup with quick drop too well. Still very tempting though…


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You’re running your numbers off an 18” barrels estimated velocity. The benefit of the 223 ai is you can go shorter while preserving velocity.

I bet if you run your QD calcs for a 16” barrel you’d be spot on.