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Fastest 6mm
- Thread starter orkan
- Start date
The work on the 6mm and 270WSM hybrid has started. Action, stock, and barrels are ordered. The reamer is on order as well. This will be a really cool rifle when its done. Think we are going to call it the 6mmC4.
It gets costly when you do not do with work. I use only Krieger or Shilen Select match and a local well known and a not so cheap local gunsmith (one of his more famous rifles 600-Yard World Record Light Gun ). But you get what you pay for in the end. Longest kill is so far is 683.5 yards on a ground hog (it took to shots, misjudged the wind that far out). We are looking at building me another 6.5wsm or a dedicated 125gr BT 300wsm, what can I say I have a slight need for speed.
I love this high velocity 6mm talk. A 105 berger somewhere in the mid 3000's, if they would hold together, would be so awesome on just about everything.
Im thinking about a 6mmRemAI or a 6mm-284, Id think they would get about the same FPS with 70-80 grainers (3700-3800?). 284 would be easier to get brass/less work to get it going. 6WSM would scream some 80 grain BT!
Just helped a friend work up a load for his .243Catbird with 70Nbtips. They are running just over 4000fps. That is some big medicine from a 6mm...
I would think a 6mm-06 Ackley Improved would be very close to your design requirements.
I have a .25-06 Ackley with a 28" barrel and shoot a 100 gr. SMK at 3660fps. I also had a pet load of 75gr Sierra Varminter at 3900+/-. Just for grins though. Accuracy was less than desirable (about 1.5MOA) , but dang they screamed.
Check this out...
Load 10972 detail in caliber 6mm-06
I have a .25-06 Ackley with a 28" barrel and shoot a 100 gr. SMK at 3660fps. I also had a pet load of 75gr Sierra Varminter at 3900+/-. Just for grins though. Accuracy was less than desirable (about 1.5MOA) , but dang they screamed.
Check this out...
Load 10972 detail in caliber 6mm-06
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Years ago Rick Jamison of Shooting Times developed his own 6mm wildcat that was a 7mm Remington Mag necked down to 6mm for coyote hunting. I dont recall the velocities that it was producing but it was pretty impressive. Naturally the barrel life was limited but so is anthing pushed that hard.
I have one also, have shot most of the lighter bullets (12" twist) 3400 to 3600 is enough for me.
A 280 is just a 30-06 necked to 7mm. That wildcat already exists, in the 6mm-06. It is a ballistic twin to the 240 Weatherby which is reasonably fast, but certainly not in the arena being discussed here.
A 280 is almost a 30-06 but not exactly. It's about .050" longer. I had a 6mm-280 built about 20 years ago. I got rid of it about 10 years ago and was going to have a new one built with a 26° shoulder instead of the 17.5° one. I bought a new chamber reamer and a new case form die and have never used it. I still have my original, once used, reamer, case form/trim die, and loading dies. If anyone is interested in them, I'd sell them for a reasonable price.
I don't think there is any reason to put a 6mm bullet in a larger case than this.
There is a way to get 5500+FPS out of a 22cal 55gr with good barrel life. Check out Remington Accelerator and JD Components are producing .30 cal Sabots to fire a .223 bullet from a 30cal bore of your choice. 300RUM would get it over 6000FPS, but I heard it tends to tear itself apart from too high of velocity. J4 jackets would be a must for the RUM.
They are working on a 6mm/243 for a 270 case, or something like that.
J and D Components - Products
They are working on a 6mm/243 for a 270 case, or something like that.
J and D Components - Products
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For all intents and purposes, the 280 is a 30-06. The 0.050" amounts to no meaningful difference. Obviously there are those here who disagree with your assertion as to how much case should be assigned to a 6mm bullet, otherwise, this thread wouldnt exist.
I'd be interested in knowing how many of those that disagree have actually owned one. The only reason I used a case that big was because I had a long action and thought it would be a waste of the long action to use a 6mm Remington AI.
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LR, I could care less about the 280 and 06 stuff. But I do agree with your signature. Glocks do suck. I never leave home without my 1911!
6mm \ 06 easy to do and should be 4300 t0 4400 with the 55 grainers. I shoot the 70 grainers at 4K. Would let you carry 5 in the mag.
We actually changed the design and went back to the SAUM case. So this will basically be a 6mm4S. The little brother to the 6.5 4S that GAP developed. This was a collaboration with GAP and Copper Creek to come up with this speed demon. We are hoping for 3700-3800 with moderate pressures. We will see what happens. The stock is done, barrels are here, action is ready to go. Just waiting on the reamer to arrive!
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LR, I could care less about the 280 and 06 stuff. But I do agree with your signature. Glocks do suck. I never leave home without my 1911!
Just like American Express, "Dont leave home without it!"
Orkan, did you end up deciding on a fast 6mm?
I shoot the 55gr NBT's out of my 6mm Remington. Never chrono'd the round but the Hodgdons load data says it should be over 4k fps. I know it's accurate and smokes the shit out of yotes, and that's what matters to me.
If you are looking to get 5 in the Mag, you may not want to go with a magnum based case. The smaller dia cases can easily get you over 4k.
6mm Rem
6mm Rem AI
6mm-06
6mm-06 AI
I shoot the 55gr NBT's out of my 6mm Remington. Never chrono'd the round but the Hodgdons load data says it should be over 4k fps. I know it's accurate and smokes the shit out of yotes, and that's what matters to me.
If you are looking to get 5 in the Mag, you may not want to go with a magnum based case. The smaller dia cases can easily get you over 4k.
6mm Rem
6mm Rem AI
6mm-06
6mm-06 AI
.244 H&H. H&H still chambers a rifle in it, iirc it's a .375 necked down to .243. I know you "don't care" about bbl life, but either way it's less than 400. I don't care what your intentions are, but less than 400 rounds won't last you a summer of shooting.
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Yeah wouldn't have lasted me long on my last few trips. I think last trip I put 3,000 rounds through four barrels.
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