Thoughts on 7 PRC case vs 6 UM

[GoatPackr]

I'm looking at a 6mm biuld. Have talked to UM and am undecided.

I have wild cat experience so everything that goes along with the 6 UM doesn't scare me.

It's my understanding they are also building a 6-7 PRC.
Is that case something that would be worth improving such as an AI. I'm not familiar with the particular design of the 7 PRC case. I'm pretty sure they are using the case as is to keep it simple. I'd have no problem asking for an improved version if it has room in the shoulder and case taper.

Planning to biuld on a Tikka and RokStock.

Kris

 

[Formidilosus]

I'm looking at a 6mm biuld. Have talked to UM and am undecided.

I have wild cat experience so everything that goes along with the 6 UM doesn't scare me.

It's my understanding they are also building a 6-7 PRC.
Is that case something that would be worth improving such as an AI. I'm not familiar with the particular design of the 7 PRC case. I'm pretty sure they are using the case as is to keep it simple. I'd have no problem asking for an improved version if it has room in the shoulder and case taper.

Planning to biuld on a Tikka and RokStock.

Kris

Improving the 6-7PRC won’t get you much at all. Thats already pretty close to the limit for any current 6mm bullet. If there were a proper 115gr to 120gr tipped bullet, it would be different.

 

[Odd1out]

Improving should help with slowing brass growth. Also some say the steeper shoulder helps with throat erosion. Should feed smoother also

Sent from my SM-G986W using Tapatalk

 

[Formidilosus]

Improving should help with slowing brass growth. Also some say the steeper shoulder helps with throat erosion. Should feed smoother also

Sent from my SM-G986W using Tapatalk

The PRC’s already have that.

 

[Sadler]

The PRC’s already have that.

Would there be much of a performance difference between the 6UM and a 6/7 PRC?

 

[Formidilosus]

Would there be much of a performance difference between the 6UM and a 6/7 PRC?

I would bet 50’ish FPS MV.

 

[GoatPackr]

So the PRC pretty much has all the high performance mods right from the get go?

The reason I'm leaning on it is cheaper dies and brass. Just drop a 6mm bushing in a 7mm PRC bushing die and off you go.

I'm not worried about about speed limits. I don't limit myself to jacketed bullets that have speed and twist limits. More speed the better.

Kris

 

[wind gypsy]

6-26 nosler or bust.

 

[robtattoo]

6-26 nosler or bust.

I'll see your Nosler & raise you a 6-3000 Wby.

 

[wind gypsy]

I'll see your Nosler & raise you a 6-3000 Wby.

That's not a raise!

 

[robtattoo]

3300 vs 3400fps (as 6.5s) with factory pills?

 

[Machingeaneer]

Eff it 6-.378 wby. Some psycho out there wants to.

 

[wind gypsy]

3300 vs 3400fps (as 6.5s) with factory pills?

The 26 nosler and 6.5-300 weatherby case have the same h20 capacity. Weatherby just put a longer throat in it so it can burn more powder at the same pressure. Can put whatever throat you want in a wildcat.

So in that case, i'd choose the one that uses the shorter case without the goofy shoulders and a belt.

 

[robtattoo]

The 26 nosler and 6.5-300 weatherby case have the same h20 capacity. Weatherby just put a longer throat in it so it can burn more powder at the same pressure. Can put whatever throat you want in a wildcat.

So in that case, i'd choose the one that uses the shorter case without the goofy shoulders and a belt.

Ahhhhh...... then I stand corrected. I thought the -3000 case was bigger.

 

[wind gypsy]

Ahhhhh...... then I stand corrected. I thought the -3000 case was bigger.

I totally might be misremembering.. I see 93 grains h20 listed for the 26 and 98 for the bee but nosler always lists their shit by "useable".. Thought the nosler cases hovered around 100 grains h20 capacity as well because a 300wm can get up to 95 grains.

 

[Formidilosus]

6-26 nosler or bust.

That was tried first. The necks didn’t like being necked down.