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6mm Cartridge

Before I got into competition I was an ardent Prairie Dog fan and loved shooting woodchucks too. Prairie dogs are less than 1/2 the size of a good woodchuck. "Generally" prairie dogs are shot at longer ranges than woodchucks. I hunted woodchucks in western New York and I saw some "OUT THERE" but not near as many as prairie dogs out at long ranges. Having said that, flat trajectories really make it easier to hit out yonder, prairie dog, woodchuck or otherwise.

I have had numerous 6BRs, Dashers, and Creedmoors. Now admittedly, they were all used in F-Class competition. They used 105-115 weight bullets. ALL very accurate and could EASILY fill the bill for most varmint hunting. All the aforementioned are great, BUT (there always seems to be a but) if you want flat trajectories along with a big enough bullet to fight wind, at least to some degree, you will need powder. I have had 2 6mm Rem Ackleys. One I used for varmints and 1 for big game. The one for varmints shot 85 gr bullets. Back then, I shot IMR 4831>>NOT H4831. Those 85gr bullets were sailing out over 3400f.p.s. I had "UNtrued" Remington actions with the varmint one had a "Dan Lilja" barrel. I can not remember exactly what size groups I was getting BUT I do remember it was amazing accuracy. I also remember that next to my 22-250 and .220 Swift it was just as flat past 300 or so yards BUT it bucked wind noticeably better. It was a phenomenal round indeed! As the proverbial "they" state, "there is no free lunch". All that powder buring thru a 6mm hole ate that throat up like a kid eating Halloween candy!
 
Jeez Guys, long range, flat shooting, Varmint rifle

Question, what is long range? Many of the bullets do not even expand at all on a Rock Chuck, must less a p. dog!

Couple of suggestions if you want to kill stuff.

Again, what range are you shooting and what are you killing?
By long range to me, I'm wanting a 6mm cartridge that is capable of reaching out to 600-yards minimum with complete accuracy and entertaining terminal ballistics on rock chuck and coyotes.
 
By long range to me, I'm wanting a 6mm cartridge that is capable of reaching out to 600-yards with complete accuracy and entertaining terminal ballistics!
@ Mike,..
And THAT's "what", the 6 XC, does Best ! ( Designed By Tubb for, 1,000 Yards, w/ the 115 DTAC Bullet )
Great for 600 to 1,000 yds,.. w/ the Right Bullet !
For Large sized Varmints, I Shoot, the 95 grain Classic Hunter BERGERS ( 80 gr. F B Bergers for, Sage Rats )
For Steel Plates and awesome Accuracy, on Paper Targets, the 107 gr. SMK's
Haven't shot, the 110 gr. SMK's,.. Yet.
Feeds Well, in a Rem 700 Short action and Barrel Life, is Way Better than,.. a 6 Creed or, .243 Win.
BONUS,..the 6 XC's Long Neck, Keep's the Bullet, OUT of,.. the Doughnut Area !
 
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Which one is the most accurate, fastest, straight forward, that can be tied into long range varmint hunting?
Depending on the ranges, a assuming a custom rifle and shorter shot strings, the parameters are a heavy for caliber projectiles and at least a 243 AI or a 6mm Remington with a custom build.

I've been shooting a factory 6MM Remington for over 30 years but newer low drag projectiles would improve it but that would require rebuilding the rifle.
 
By long range to me, I'm wanting a 6mm cartridge that is capable of reaching out to 600-yards minimum with complete accuracy and entertaining terminal ballistics on rock chuck and coyotes.
Do keep in mind that as the powder charge and bullet weight increase, so does muzzle flip and recoil. It’s not about recoil pain or getting flinchy. When the gun moves back your eye is outside the sight box. By the time you recover and your eye is back in the scope, the hit/miss has already happened.
 
I use a 6BR for prairie dogs and have made hits out to 700 yards. The 6BR in a standard no neck turn case is easy to load and tune, and it will reach out there. I shoot an 88 gr Berger flat based varmint (.38 G1 bc) over 32 gr of Varget. For longer range, I would use a Berger 105 (.545 G1 bc) with 30 gr of Varget.
The longer the range, the more important the ballistic coefficient.
 
Before I got into competition I was an ardent Prairie Dog fan and loved shooting woodchucks too. Prairie dogs are less than 1/2 the size of a good woodchuck. "Generally" prairie dogs are shot at longer ranges than woodchucks. I hunted woodchucks in western New York and I saw some "OUT THERE" but not near as many as prairie dogs out at long ranges. Having said that, flat trajectories really make it easier to hit out yonder, prairie dog, woodchuck or otherwise.

I have had numerous 6BRs, Dashers, and Creedmoors. Now admittedly, they were all used in F-Class competition. They used 105-115 weight bullets. ALL very accurate and could EASILY fill the bill for most varmint hunting. All the aforementioned are great, BUT (there always seems to be a but) if you want flat trajectories along with a big enough bullet to fight wind, at least to some degree, you will need powder. I have had 2 6mm Rem Ackleys. One I used for varmints and 1 for big game. The one for varmints shot 85 gr bullets. Back then, I shot IMR 4831>>NOT H4831. Those 85gr bullets were sailing out over 3400f.p.s. I had "UNtrued" Remington actions with the varmint one had a "Dan Lilja" barrel. I can not remember exactly what size groups I was getting BUT I do remember it was amazing accuracy. I also remember that next to my 22-250 and .220 Swift it was just as flat past 300 or so yards BUT it bucked wind noticeably better. It was a phenomenal round indeed! As the proverbial "they" state, "there is no free lunch". All that powder buring thru a 6mm hole ate that throat up like a kid eating Halloween candy!
If you do it over again, using Hbn coated bullets
You may be surprised how much infinitely longer your throat will last.
Think .010" throat erosion vs 0.300" over time
(My experience anyway)
-------------
a very fast high BC 6mm, is a thing of wonder in the wind as you said
 
If you do it over again, using Hbn coated bullets
You may be surprised how much infinitely longer your throat will last.
Think .010" throat erosion vs 0.300" over time
(My experience anyway)
-------------
a very fast high BC 6mm, is a thing of wonder in the wind as you said
Oh I am quite sure you are correct. However, my foray into flat shooting, high performance varmint rounds is long since over. I now shoot basically just F-Open and even there, my list of cartridges is getting milder. I do believe though that you may very well be correct. Thanks for your input.
 
Oh I am quite sure you are correct. However, my foray into flat shooting, high performance varmint rounds is long since over. I now shoot basically just F-Open and even there, my list of cartridges is getting milder. I do believe though that you may very well be correct. Thanks for your input.
No problem man,
Just sharing, I understand your viewpoint, just saying there's hope again is all.
I shoot a 6x284 for ELR, and I almost gave up on that caliber
Even though it performs extremely well for what I do.
Retained energy of a 115 beats even a 7 mag from 600 yds all the way out and stays supersonic longer than most big 7mm's
So it's perfectly built for ELR
Except for barrel life
But hey, thats the price you pay for a hot rod right?
Until I solely used Hbn bullets
My mind changed and am sticking with the 6x284
 
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6 BRA just won the 600 yard f class nationals and a Dasher was 4th that is shooting against at least 100 7MM variants. It was windy at Lodi as well…. I have a 6 BRA that shoots great, is easy to tune, not bad on barrel life etc etc. I like my 6MM Creedmore but it eats barrels… but has factory ammo available.
 
6 BRA just won the 600 yard f class nationals and a Dasher was 4th that is shooting against at least 100 7MM variants. It was windy at Lodi as well…. I have a 6 BRA that shoots great, is easy to tune, not bad on barrel life etc etc. I like my 6MM Creedmore but it eats barrels… but has factory ammo available.
Just did some research on the BRA. I like it. I'm now comparing the BRA, CM and 243AI.
 
I would like to hear from those shooting the BRA, CM and 243AI and get some numbers on barrel life.
Mike -

Howdy !

Whatever 6mm case you might end up deciding on, a common demonitor on the barrel life ultimately obtainable; is that the(se) cases have a long enough neck.

When the case’ neck length is sufficiently long enough, the powder combustion
“ turbulence point “ is positioned inside the neck… and not out in the barrel throat or
“ leade “. That aids obtainable barrel life, along with case capacity you choose.

Here’s a pic of my wildcat “ DEEP 6 “, as an example. Shown w/ 95/T-MK seated.


With regards,
357Mag
 

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What is the parent case for your Deep6
357mag?
Dgd6mm -

Howdy !

I only just now saw your question posted on Sat. I apologize for my tardiness in responding back !

“ DEEP 6 “ has a chamber cut by running a 6mm Remington reamer in “ short “, for a
nominal .466” base diameter. *** I use 7 X 64 Brenneke as the parent brass. ***
While 7 X 64 is a Euro-spec case, it is still .308 bolt face compatible, “ rimless “.
I use Norma brass, but there are also other brands that manufacture these cases, like
Lapua and RWS just to name 2; and…other manufacturers that make loaded 7 X 64 ammo.

I have previously submitted a 4-part post on my “ DEEP 6 “wildcat, dated 04 May 2022. I included some pics with the posts, too ! Please take a look if you get a chance.
I’d be happy to answer any additional questions you might have.


With regards,
357Mag
 
Another 6BRAi fan here. my prone sling rifle I run 105 -107's Varget at first but on H4895 currently since my Varget ran dry.
Love me some 6BRAi Not really fast load but i am about 2894 with the 107 SMK 30.6 H4895 several times fired Lapua brass jumping 20thou
PS I am sling shooter at Midrange and Longrange.

I have shot a 6XC, man that thing was a laser in a Elisio
 
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