6x45 versus 6x47 Rem. versus 6TCU

[Freestate101]

Anyone have any previous experience shooting two or all three of these cartridges? If so, how do they compare accuracy wise, what are their range limitations, and are they effective mid range varmint cartridges or should I just go with a 6PPC for light bullets out to 300-350 yds.?

Thanks, Jim Berry

 

[treeman]

i'd pick the 6ppc or 6br they'll be easier on your pocket book and easier to get the accuracy you are after. jmo

 

[alf]

From a economic view, I'd do either the 6x45 or 6 TCU,,identical twins) which are just the 223 Rem. necked up.
The 6x47 has the advantage of the longer neck for seating different length bullets if you run a quicker twist.
All are really three peas in a pod, with the advantage of more barrel life over the parent case.

I've been shooting a 6x47 improved with a 45 degree shoulder that has over 6100 rds. in the prairie dog towns, and just won't quit. 55 Ballistic Tips at 3300 fps.

You do realize that you don't have the option of a 223 or a ppc with the same bolt face? They are different.

Al

 

[crabbies3]

I too have a 6x47 imp on a contender custom barrel what powder have you found works well with the 55 nos or works well with 6x47 imp in general. tks ken

 

[Freestate101]

Al, are you using the 222 mag. brass for your improved 6x47 or are you using Lap. 6.5x47 brass? What powders, primers, and charge weights are you using with the 55 gr'ers, and what other bullets and load data do you have handy, if you don't mind sharing? I normally shoot the 6CM with 107 & 115's, but would like another 6mm in the +/- 30 gr. range to lower the cost per round as most of my shooting is 400 yds or under. I was also considering the 6x45 or 6TCU for the same reasons.

Thanks,

Jim

 

[CJ6]

The 6.5x47Lapua case is a .473base case.The 6x45-6x47 Rem, TCU are based on a .378 base case.Or the Lapua 6.5x47 uses the,308) bolt head.The 6x45Rem is a 6mm.223. the 6.5x47is 6mm.222Rem Mag. Hope this helps

 

[Freestate101]

Thanks CJ6, I am aware of the parent cartridge dimensions, I'm more interested in the ballistic differences between the three and comparing load data for a best of both worlds compromise between accuracy, range, and cost per reloadable round for short to midrange varmint shooting, with a max range of 350 yds.

Jim

 

[GrocMax]

For me, 55g bullets, 6BR 4000 FPS, 6TCU 3700, 6x45 3500, 6TCU fireforming load 3550. 58g 100FPS slower all cases.

 

[snert]

Thanks CJ6, I am aware of the parent cartridge dimensions, I'm more interested in the ballistic differences between the three and comparing load data for a best of both worlds compromise between accuracy, range, and cost per reloadable round for short to midrange varmint shooting, with a max range of 350 yds.

Jim

'If you can find a used BR rifle, grab it up and go to it. Fine for 350 yard shooting.

 

[th82457]

I have a 6x45 in an original Kimber of Oregon sporter, and I also have a heavy barrel Sako A1 6MM PPC. I enjoy both, but the PPC is match target accurate, while the 6x45 though accurate is not in the same league with 55-70 grain bullets.

 

[Catfish]

Forget the inherent accuracy of one round over another, there are so many other things that are so much more important. I load for the 6-45 and the 6-47 and rather will do that range, but the 6 BR will do it a lot better.

 

[Cold Bore]

I shot a 6x45 and liked it fine. Was going to build one, but then stumbled into a 500 count lot of 222 Rem Mag brass, and switched build plans to the 6x47 instead with no regrets.

Also had a 6BR built for those slightly longer and/or windier days in the groundhog fields.

No experience with the 6TCU, though can't imagine there is a lot of real world difference in your three choices.

Of those, I'd go 6x47.... IF... you can find a good supply of brass (yeah, I know, it's Remington, and "inferior", but it works fine for killing groundhogs ).

 

[AWS]

I've been shooting a 6mm-204(6x47 Imp. 30 degree). for 9 years. I like it as it is easy to load for, no custom dies needed. I load it with a 204 Ruger Redding Type S FL Bushing die slightly modified to let the neck get to the bushing and the bushing and expander ball changed out to 6mm. I use the same die to load my 22-204 and 25-204.

I use it mainly for coyote hunting and shoot 58gr V-Max and 55gr NBT Lead Frees, both are fur friendly on our northern winter pelts but tough on the smaller southern coyotes. When I head south I leave it home.