High velocity chamberings known for having exceptional accuracy.

[elkaholic]

I trimmed them down to 2.494" last night after necking them down. Thanks for the info Rich.

I still wanna build me a 6.5 Sherman sometime soon.

I'm ready when you are

 

[MudRunner2005]

I'm ready when you are

My wallet ain't... But I'll let you know when I get all the components needed, short of the reamer and dies. 2 built in 1 month, and the adventure is beginning again...It never stops. LOL

 

[Max Heat]

What I seem to be buying into is, if there is a most accurate caliber, is that 6 rules up to 1000yd, with 7 [or higher] taking over at beyond 1000yd. Since I already have a 7RUM, looks like my next build will be a 6. I'm probably going to want the max chambering for the 6, regardless of finnickyness, just like I did with the 7.

If there IS indeed (I haven't really looked yet) a 6-284AI, and it IS a necked down 6.5-284AI, I think I'm already sold. Doesn't that cartridge hold close to 90 grains?

 

[AZShooter]

Not aware of a 6-284 AI but sure you could have a reamer made. 90 grains? Case not large enough. Regular 6mm-284 is using powder charges in the mid to high 50s at most. 105-107 gr up to 3500 fps with 30" barrel.

If you went to the 6mm-264 AKA Mach IV or 240 incinerator you could use more powder but still not 90 grains. A 105 gr bullet could approach 3800 fps with a 28-30" barrel.

 

[Max Heat]

Not aware of a 6-284 AI but sure you could have a reamer made. 90 grains? Case not large enough. Regular 6mm-284 is using powder charges in the mid to high 50s at most. 105-107 gr up to 3500 fps with 30" barrel.

If you went to the 6mm-264 AKA Mach IV or 240 incinerator you could use more powder but still not 90 grains. A 105 gr bullet could approach 3800 fps with a 28-30" barrel.

I did a little checking, and there is a 6A (ackley), aka the .243AI I believe. I think it is based on the W (winchester) cartridge though, which would be a direct competitor to the 6-284. So it not very likely that there would exist the 6-284AI, right?

3800 sounds great to me, for a 105VLD. A guy I saw shooting a 6.5-284AI said he was using 80-something grains of RL33, if I recall correctly.

 

[Deleted member 46119]

Now that you have provided more parameters, the 6-284 is very close to what you desire. As for an improved version, roll your own. Call PTG and tell them what you want.

I think you would go faster, accurately with a 6-270 wsm. There are published wildcat loads at 3380 for 6.5-270 wsm pushing 130 Swift.

3800 fps will take a long tube to Lett the powder do its thing.

Look at PAC-NOR Barreling, Inc. - Wildcat Chambers they offer lots of 6mm hot rod wildcats. They list the 6-300 wsm it's the same as a 6-270 wsm, it's easier to start with 270 brass.

Of course there is the 6 Mach IV.

You pays you money and you takes you choice.

 

[IdahoCTD]

I have a 6WSM and with Retumbo I got 3560fps using 105 Amax's. RL-33 would get you some more but not to 3800fps. Mine has a 30" barrel too.

 

[MudRunner2005]

I did a little checking, and there is a 6A (ackley), aka the .243AI I believe. I think it is based on the W (winchester) cartridge though, which would be a direct competitor to the 6-284. So it not very likely that there would exist the 6-284AI, right?

3800 sounds great to me, for a 105VLD. A guy I saw shooting a 6.5-284AI said he was using 80-something grains of RL33, if I recall correctly.

A .284 case will not hold that much powder, even with it spilling out of the case mouth...

Maximum H2O capacity for a 6.5-284 case is 68.33 grains. So, that guy was full of crap as a Christmas turkey...Or he didn't know his *** from a hole in the ground. I'm leaning towards the latter. There's alot of idiots out there with reloading equipment, playing with primers and powder...Scary thought, huh?

 

[Jud96]

A .284 case will not hold that much powder, even with it spilling out of the case mouth...

Maximum H2O capacity for a 6.5-284 case is 68.33 grains. So, that guy was full of crap as a Christmas turkey...Or he didn't know his *** from a hole in the ground. I'm leaning towards the latter. There's alot of idiots out there with reloading equipment, playing with primers and powder...Scary thought, huh?

HAHA! That's almost as funny as the time a kid, I use to go to school with, said he loaded 150grs of black powder in his '06 To say the least, he won't be writing the next addition to the Lyman loading manual. He didn't know that an '06 case only holds 68grs of H20! I also noted that his propellant wasn't up to date or very effective for the .30-06!

 

[MudRunner2005]

HAHA! That's almost as funny as the time a kid, I use to go to school with, said he loaded 150grs of black powder in his '06 To say the least, he won't be writing the next addition to the Lyman loading manual. He didn't know that an '06 case only holds 68grs of H20! I also noted that his propellant wasn't up to date or very effective for the .30-06!

I don't even own a 6.5-284...But Google can really help you prevent from making yourself look dumb.

My appologies to MAX, I was not directing my comments at you, but instead, at the idiot who told you he loaded 80 grs of powder into a 6.5-284 case.

 

[Jud96]

I don't even own a 6.5-284...But Google can really help you prevent from making yourself look dumb.

My appologies to MAX, I was not directing my comments at you, but instead, at the idiot who told you he loaded 80 grs of powder into a 6.5-284 case.

Same here, but when you look at a cartridge that is basically a fatter .308 Winchester there's no way it holds 80grs! I agree doing your homework will help you not to fall into the B.S. that some like to put out. It's a shame that people say dangerous things like that, it's a good way for someone to blow up a fine rifle, or themselves!

 

[MudRunner2005]

Same here, but when you look at a cartridge that is basically a fatter .308 Winchester there's no way it holds 80grs! I agree doing your homework will help you not to fall into the B.S. that some like to put out. It's a shame that people say dangerous things like that, it's a good way for someone to blow up a fine rifle, or themselves!

Exactly...I might be a little brash and some might call an a-hole, but when it comes to keeping people safe, they will think back to when they got told how stupid something was, and it might just save their life or gun.

 

[Jud96]

Exactly...I might be a little brash and some might call an a-hole, but when it comes to keeping people safe, they will think back to when they got told how stupid something was, and it might just save their life or gun.

+1 Very well said.

 

[Max Heat]

OK, what about this: I spotted something online a while back referring to 6.5RUM being a chamber option on something orderable. Can't remenber if it was a barrel or not

I AM willing to jump into wild cat territory on my next build, so long as brass and dies are available.

Is the 6.5RUM a WC that anyone actually does (or HAS done)?

Or does what I saw online HAVE to have been some sort of misprint?

Out of curiosity, can the 6.5-284AI case be wildcatted out beyond Ackley's improvement, to hold 80 grains? That may have been what the guy was saying, because he WAS talking about having custom dies. I can say that it was downright nasty, handling the cuncussion of being next to him at the range when he would fire, with the muzzle brake he was using. It was enough to convert me right into being an anti-fan of the MBs. Not likely that any builds of mine will sport them.