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View Full Version : 6mm, 257, 6.5mm, 277, 7mm which caliber cartridge and why



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tammons
05-26-2011, 04:27 PM
No problem and will send it along. Quickload does not do well with that cartridge and chamber due to the
extreme freebore. Runs about 250-300 fps low and a lot lower pressure.

PM coming with load data.



Hey Tammons,

I ended up buying that 458 setup from the gentleman you sold it to.

If you don't mind, can I get some of your load data for it. If not I understand.

I have a feeling this thing is going to be a butt-kicker, hopefully my brake will help tame it.

Thanks

Boots

Tracer
06-22-2011, 01:05 AM
I have hunted and shot game with the 6mm Remmy, .243 win, 270 win, 7mm Rem mag and now have a new rifle in 6.5/06 caliber. They all are very good calibers but one needs to know his or her limitations and those calibers too on certain size game etc. A hunter must also select the proper bullet and weight for the animal to hunt.

Apache
06-22-2011, 10:03 PM
25-06AI with 80grn TTSX......nearly 4k fps. Got a post on it somewhere. See what that does in your ballistic calculator compared to the others. ;)

moe2
06-27-2011, 07:35 PM
i also like the 25-06 this is what i set up for my son, shoots1/2"at 100 with 100grn sgk,killed every he has shot at, i shoot the 257wm with 110 ab also very accurate have not killed with it yet but hit bowling pins at 400 yds easy.put up my 7rm when i bought 257wm it shot under 3/4" at 100 with 120 nosler b/t very deadly an flat shooting.it was a hard choice hope i dont regret it

Tracer
07-06-2011, 08:09 AM
Tammons my experience with the .458 Win mag is to use those 450 grain bullets, keeps the velocity up higher and it still penetrates deep. A 600 grain bullet just pulls the velocity way down and you lose a lot of energy etc. The .458-LOTT is good with 500 grain bullets but once again the 600 takes up to much powder space.

lomfs24
07-07-2011, 09:46 AM
Something in 6.5mm. I love my 260 Rem. But I am thinking about going up a notch to 7mm on my next build but that might not be fore a while yet.

jonsrm125k5
07-30-2011, 08:06 PM
.270 in a pre-64 Win Model 70 was the icon of everybody out west for 50 years. It has a higher SD than a 3006 (for wind), much faster than a .308, and you already have the bullets to load it!!!! I love my 7mm rem mag, but for an all around caliber that wont split an antelope in half, and still kill a black bear, then you have it. Plus it shoots flat as hell. I love it for hunting deer and antelope out on flats or hiding way down the canyon. Don't want to crap on the .25-06, but it just doesnt go through sagebrush as well (coyotes hide in the 6 foot stuff), and a .270 will go right trough. I was hunting with my unle, I had the .25-06 with 100 gr's and he had a .270 with 130's, and my bullet went sideways after exiting a piece of brush and his .270 went right through and almost cut that coyote in half.

dcloco
07-30-2011, 10:09 PM
Would go the 6.5x284 or 6.5x06 AI route.

For normal plinking to 1200+, 140/142 gr Sierra HPBT's work well. 140 Amax after that. Then...you need to buy some 155 Scenars or some 160's from the other side of the pond - believe Norma makes them.

Check the BC and SD of the above bullets in the 3000 to 3200 muzzle velocity. The long Hornady, Scenars, and Norma bullet just fly and fly....AND retain enough energy to knock down what you are shooting at.

Do we need to talk about recoil? Not much. I built a 6.5x55 AI that flings the 142's at a spec under 3100. It shoots. It hits what it is aimed at. If the bullet misses, I don't have to look far into what caused it (mirror - me!).

This fall/winter, I am going to build two more 6.5x55 AI's on heavy sporter 24-25" barrels....because it shoots that good.

handirifle
08-08-2011, 10:13 PM
Since it's not listed, but you DID mention having one, I'd say the 308, BUT with the Barnes 130gr TSX.

Here's the Barnes data on it http://www.barnesbullets.com/wp-content/uploads/2007/02/308WinWeb.pdf, with a BC of .340 and pusing it to 3200FPS, I'd say it ought to be pretty flat shootin, AND accurate, and fairly light recoil. Much less than the 208gr offering, and not a whole lot more than the little 6.8, but with WAY more reach.

I have read articles of guys using these from 30-06's and 300 WM in Africa with devastating results. The ol '06 got pass throughs on Kudu.

IIRC they were getting close to 3400 with the '06 and 3500+ with the WM, but 3200 is about what you'll get from the 270 and the 95's I'd bet.

SN13
09-13-2011, 04:12 PM
.270 Win.

I can and do shoot PRAIRIE DOG Steel plates and Fire Extinguishers at 565 yards and hit consistently with my Savage 111FCNS Accustock Hunter.

I can't beat Hornady 130gr SST for accuracy out of my gun. I just can't do it. 200 yard zero, go to the range and plop a target at 200. First shot X ring every time.

NATTY BUMPO
09-24-2011, 02:20 PM
I would suggest either a .25-06 or a 270 Winchester. They are both excellent deer cartridges. You can walk into anyplace that sells ammunition and buy 270 ammo. Walmart often runs it in sale before hunting season. .25-06 shoots flat, takes care of business, and doesn't kick much. If you reload and wanna walk on the wild side, then try a 6.5x284. 6.5 bullets have both good ballistic coefficient and good sectional density.