Better 6mm (not 243W) for hunting? Which one?

[budlight]

the 257 Roberts is a mighty fine round but handloading may be part of it seems ammo is not always available

I have a ER Shaw 257 Roberts AI with a 26 inch barrel and It can chrono near 25-06 with the the same length barrel. Brass or ammo are non existent. The parent case is 7mm Mauser. So I have bought 100's of them and just sent them through the die and do full load AI fire forming. Very accurate rifle

 

[diamonddave2]

Its defiantly in the same class of cartridges, different parent brass, a little bit of case capacity difference but either one is a fine little "big" cartridge that loaded with the right bullets punches above its weight class. It especially is performs well when throated for the 90-95gr bullets with the higher BC. And the little monos perform well also. With the right choice of bullet its a little hammer on deer and antelope. And they are so fun to shoot, very addicting.

Actually, both the 6 TCU and the 204 Ruger's parent case ideally is the 222Rem mag. You can make 6-7 TCU cases with 223 Rem. brass, but the necks will be shorter.

 

[muleystalker]

Actually, both the 6 TCU and the 204 Ruger's parent case ideally is the 222Rem mag. You can make 6-7 TCU cases with 223 Rem. brass, but the necks will be shorter.

Ok, I thought they were off a .223 case, I haven't looked at them for years. Back in the early 80's I was going to barrel one up for my Contender when I was into hunting with handguns. The nice thing about the .204R its like a 222Rem Mag that has been improved and taper blown out, yet it is a simple neck up, no real fire forming.

 

[budlight]

I owned the 7tcu and just fire formed the 223 cases. I just went out and shot 100's of 223 round through it. 120 gr 7mm were great for silhouette shooting and antelope

 

[diamonddave2]

I used to shoot IMHSA in the 80's with my Contender using 7 TCU. I just loaded up a 100 rounds of 6.5 TCU last night for the contender. The thing that's got me back on the Contender is Sharps brothers just came out with a new grip that will accept a folding pistol brace, making pistol length barrels a backpack hunting possibility. I have many barrels that would be perfect for that application.

 

[redneckdan]

I used to shoot IMHSA in the 80's with my Contender using 7 TCU. I just loaded up a 100 rounds of 6.5 TCU last night for the contender. The thing that's got me back on the Contender is Sharps brothers just came out with a new grip that will accept a folding pistol brace, making pistol length barrels a backpack hunting possibility. I have many barrels that would be perfect for that application.

Now THAT is an interesting idea! I have a contender frame gathering dust. Hmm....what chambering to get....7 Waters maybe? Wonder how fast a 6tcu can push a dtac.

 

[diamonddave2]

The problem with a stock 6 TCU is gonna be the twist rate which is 1 in 10". I can't even stabilize that round in my 6 mm Remington with at that twist. Just not enough twist rate or velocity. The best you could do is probably an 85-100 grain running around 2700 for the 85 and 2586 for the 100 grain. I did used to shoot the 154 grain SST out of my 7 TCU at 1900 fps and shot it out to 500 meters. I could hit 6 out of 10 rams shooting the rifle silhouette course with a scoped pistol.