Best long range 6mm choice

[Hammer47]

This has probably been hacked to death but I would like to know opinions of WHAT IS THE BEST CHOICE OF 6MM CARTRIDGES USING THE 85 GRAIN SIERRA GK BTHP AT A MAX OF 600 YDS? I am looking for the max velocity, best bc, highest accuracy and USING THE LEAST POWDER to achieve this end. In other words, what is the best frugal driller available?

 

[watercam]

All you need? 6mm BR but I would use 105s personally.
Best BC, velocity, etc.? One of the .243 variants
Best overall balance? 6 Dasher or 6mm Creedmoor
No matter what you WILL have to read the wind at some point. No cartridge will over come a 25mph+ without correction. Embrace it!
All the above will work at 1000 yds. as well...

 

[Hammer47]

The reason I choose the 85 GK is that I have 23,000 of them.

 

[Richard Coody]

The reason I choose the 85 GK is that I have 23,000 of them.

hope your rifle likes them. not a long range accuracy bullet at all.

what is this rifle for? if hunting or varmints with that bullet i would just go standard .243. you will wear out many barrels before you shoot up all of those game kings.

 

[Hammer47]

Might not be "long range" but the acuracy of this bullet rivals many of my benchrest bullets in the 6PPC. I am currently using these in a 6BR and a 6x45 with 8 and 10 twist bbls but am interested in more cartridges hopefully using less powder however this may be an exercise in futility. Paper and steel punching only, no live critters.

 

[maxscm]

6mmPPC
6mmBR
6mmx45
6mmx6.8spc
6mmDasher
6mmx47Lapua
243 Winchester
243 SLR
6mm Creedmoor
243 Ackley
6mm Remington
6mm Remington Ackley
240 Weatherby

I'm sure I left out something.
So, Choose your Poison.
I've had most of these calibers and right now I'm really liking the small primer 6mm Creedmoor , bullet speeds are exceeding the 243 Win.

 

[MGYSGT]

A bolt gun in 6BR is kind of a pain. The cartridge is so short, that some, of the cartridges leave the extractor/ejector prior to clearing the receiver opening on Rem 700 short receivers. At least that is what mine did.

 

[urbanrifleman]

243 Sammi reamer. R15 powder or R16/R17 powder. 26" barrel 1-10 to 1-8 twist. Should be able to get 3300-3500 FPS.

That is some flat shooting. Don't pay attention to the nay sayers. I bet you could get a load that will shoot better than you can shoot at 600 yards. And you could take your rifle hunting and shoot a deer or a groundhog too!!!

Send me a couple thousands of those GKs and I will work up some loads in my new 243 barrels

 

[LHSmith]

243 Sammi reamer. R15 powder or R16. 26" barrel. Should be able to get 3300-3500 FPS.

That is some flat shooting.

Send me a couple thousands of those GKs and I will work up some loads in my new barrels

The problem with that choice is the OP would need 23+ barrels in order to consume his stock of bullets.

 

[urbanrifleman]

The problem with that choice is the OP would need 23+ barrels in order to consume his stock of bullets.

Ehhh... People have been shooting that weight of bullet in 243 for half a century... I think you can get a few rounds out of it before it stops shooting.

You could use N160 to keep the barrel cooler, but it would take more powder.

 

[R.Morehouse]

Would h-1000 be to slow out of a 243ai with those bullets? I know that powder with the 105's helped barrel life out quite with the 243ai.

 

[expiper]

would you sell some of those bullets,,,Roger

 

[urbanrifleman]

The "no brainer got to" powder would be H414/W760. Use a mag primer. Work up to max, runs very cool, and shoots bug holes at great velocities.

 

[urbanrifleman]

80 Grain IMR 4350 39.0 2888 43.8 3231
80 Grain H4350 40.5 2836 45.6 3200
80 Grain NORMA 204 40.5 2825 44.5 3111
80 Grain AA 3100 43.0 2849 46.0 3065
80 Grain RE-19 41.5 2856 46.8 3229
80 Grain VIHT N160 44.5 2962 46.8 3119
80 Grain WW 760 40.0 2903 44.0 3236
80 Grain Ramshot Hunter 40.5 2908 45.0 3221
80 Grain H4831 SC 41.0 2898 45.8 3231
80 Grain IMR 7828 SSC 44.5 2927 49.3 3293
80 Grain IMR 4064 35.5 2886 39.7 3174
80 Grain IMR 4895 36.0 2979 39.8 3237
80 Grain VECTAN SP11 38.5 2919 43.0 3222


88 Grain IMR 7828 ssc 42.0 2826 47.1 3138
88 Grain H4831 sc 42.5 2785 47.6 3089
88 Grain NORMA MRP 42.0 2756 46.3 3066
88 Grain AA MAG PRO 44.0 2795 49.5 3128
88 Grain RE-22 42.0 2839 47.1 3136
88 Grain VIHT N165 42.0 2763 47.0 3039
88 Grain WW WXR 42.0 2823 47.3 3133
88 Grain Ramshot Magnum 45.5 2781 51.0 3137
88 Grain IMR 4064 33.5 2717 37.5 2985
88 Grain IMR 4350 37.5 2772 41.9 3078
88 Grain H414 38.0 2740 42.5 3048
88 Grain RE 19 40.0 2751 44.7 3075
88 Grain VIHT N140 35.5 2737 39.5 2986
88 Grain NIHT N160 41.0 2722 45.4 3016

 

[urbanrifleman]

From an old thread:

"H414 provided excellent accuracy w/BERGER 80gr in 243Ackley, 1:10 PacNor, BAT action.
46.0 with sticky bolt lift @ avg. 3581 fps ES14.3 SD6.55
45.2 avg. 3534 fps ES10.33 SD5.00, slightly cratered primers with NO stiff bolt lift
Very well suited powder for 80 gr. bullets with lots of velocity potential."

Now that is an Ackley but, like I said, you should be able to get 3300 pretty easy with an 85.

 

[urbanrifleman]

It appears that 47 gr of H1000 with the 87 Berger is a honey load

 

[tmwinds]

A bolt gun in 6BR is kind of a pain. The cartridge is so short, that some, of the cartridges leave the extractor/ejector prior to clearing the receiver opening on Rem 700 short receivers. At least that is what mine did.

You are right, Remingtons do have a bad habit of dropping the short fired brass before it clears the ejection port. It can usually be rectified by installing a Sako or mini 16 extractor in the bolt.

 

[urbanrifleman]

From an older thread:

Tried and tested loads. Speer 85 grain SPBT BULLET.
Varget 38.5 grains 3118 fps with a spread of 27 fps over five rounds.
Viht. N160 44.5 grains 3190 fps with a spread of 37 fps over five rounds.
46 grains of N160 gave 3217 fps with a spread of 75 fps.
47 grains of N160 gave 3337 fps but with early signs of pressure, so too hot.
I use the 44.5 grains of N160 exclusively now simply as I had shot off all the Varget loaded rounds.
All fired in a Sako 75 with a 20 inch barrel and T4 moderator. Federal brass, CCI standard primers.

 

[LHSmith]

This has probably been hacked to death but I would like to know opinions of WHAT IS THE BEST CHOICE OF 6MM CARTRIDGES USING THE 85 GRAIN SIERRA GK BTHP AT A MAX OF 600 YDS? I am looking for the max velocity, best bc, highest accuracy and USING THE LEAST POWDER to achieve this end. In other words, what is the best frugal driller available?

http://www.accurateshooter.com/technical-articles/overbore-cartridges-defined-by-formula/
Pick something from the "green" section of this chart. Nothing frugal about overbore cartridges.

 

[dantiff2]

The cool kids shoot the 6XC