at 300 meters, 308 or 7-08?

[WhelanLad]

so fellas, im reading the 308 V 708 thread but thought to ask a question that is on my mind in terms of my kimber, at the 300m to say 400m mark, which is the 'better' round using "woodleigh" style projectiles - for trajectory with drop from a 200meter Zero ?



seems like alot of variables but i have a 308 barrel for my 7mm-08 montana, im beginning to really toss up throwing some money into it to swap barrel BUT also maybe potentially a Re-chamber in one of the Barrels while im at it..... to make a 400m Sambar / "Elk sized" Game tackler in the Alpines where 300m isnt that far and more likely 400m is on the cards for the bigger elusive / cunning buggers on the sides of big gulleys etc!


which leaves a coupe of options--- to change from 7mm-08 to

308win to keep it standard..
284 win- to wildcat the 7mm barrel...
30-284... a short action 3006 from what i gather!?

Thoughts?

- im fairly happy to utilise the 7-08 at 400m , just the drop becomes real at this distance- im sure the 308 is the same or more? but the wildcats are fascinating as to the boost it potentially gives the same gun for $$

 

[jmichelin84]

My buddy suggests 168 grain, but we both agree that the 175 grain SMK is optimal for longer range and tactical needs, forgot to say using 308 win or 300 win mag

 

[Kelly Timoffee]

.284 win would be you flattest IMO if you want to play around.

Personally none of those are incapable at 400m , I’ve used my 7/08’s on game and target at a large array of distances but won’t post specific results as I don’t like surmons from the ethics police.

 

[personaguru]

6.5 creedmoor very flat shooting has bin used on elk deer and more hit a steal target at 500 yards and it hits whit some power

 

[9.3mauser]

Not worth sinking money into, imo. 7-08 gives you better b.c. and s.d. over the .308. Rechambering to .284 might net you another 200 fps, still not really that noteworthy when you start comparing trajectories.

 

[Potashminer]

Re-chamber to .284 Win might be interesting, if the moderate gain in velocity works out for you - but can your existing set up actually hold and feed those fatter cartridges, or will you also be looking at magazine and action work, as well?? Just looking at Nosler #7 - for the highest speed loads that they list, less than 50 fps gain with 140 and 160; 119 fps gain with 150 grain. 26" barrel for 7mm-08; 24" with 284 Win. Hardly a fair comparison, if you have a 22" barrel... From Nosler cartridge drawings, looks like 284 would pretty much clean up a 7mm-08 chamber without setting barrel back...

 

[remington jim]

I have short action rifles in 260 Rem - 6.5CM - 7-08 Rem - 308 Win and 284 WIN . The 284 Win will clean up a 7-08 chamber BUT depending on the Rifles action may require a BIT of time to get it to FEED properly ! I LIKE the 284 WIN and it does give a BIT of gain over the 7-08 and ALL the Others ! RJ

 

[Leeper]

The 30-284 is a pretty good cartridge and has been so for over 100 years as the 7.5x55 Swiss. I have built a couple of 30-284's and they worked pretty well. If I wanted to changed from the 7mm-08, my choice would probably be the 308 because, over 300 or 400m there just isn't much difference and the 308 will, on average, shoot a little better with a wider variety of bullets. GD

 

[JEC]

I did a 30-284 on a short action. Required opening up the NK on a 284 sizer die to resize brass / running the reamer into a 30 cal Wilson in-line seater to seat bullets. There are few (165+ gr) bullets that will seat short enough to fit in the typical SA magazine that will take a COAL of about 2.83”. Depending on freebore and magazine length restrictions ... bullets may need to seat deep enough into the case to reduce powder capacity. With a 24” barrel, mine shoots 168gr bullets (magazine length) at about 2825 FPS and 150grs just above 3000fps.

 

[todbartell]

Woodleigh PP's bleed off velocity quickly. If you're set on using that bullet style and shooting 400 meters, you're probably best set up with a 7mm or 300 magnum

 

[pete dobinson]

Leave your Montana as a 7-08, it will do anything the 308 win will. Out of the cartridges you mentioned, if it were me, I would go 284win but I would want it in a 24" barrel. Anything less than a 24" barrel wouldn't be worth it for the gains you would get imo, unless of coarse you just want something different.

 

[brybenn]

Id keep it as a 708 and try to get another 50 yards closer or step up to a bigger case in a longer action

 

[keith mokry]

Stay with 708 as is. If u are getting something new then think of different caliber.

 

[WhelanLad]

a big 10-4 on the above in regards to keeping it as a 7-08, it does only have a 22 inch barrel - both barrels are 22 inch in fact and being a believer in the 270 but only with 24 inch barrel i can see the downer in the 284 at 22 inches V the 7-08.
i agree with stalking in nother 50 meters and sealing the deal!

i would mostly stick with woodleighs, the 140gr ppsn im using now will do a good job at 400 if i put it in the right place which at the end of the day is only a bit more hold over- than the 270 would do and what im more experienced with at longer ranges...

looks like its time to set up the cardboard cut outs.....

il save the moneys

 

[WhelanLad]

Woodleigh PP's bleed off velocity quickly. If you're set on using that bullet style and shooting 400 meters, you're probably best set up with a 7mm or 300 magnum

todd my thoughts were along the lines of the 270 wsm with 24 barrel to be a bit more specific 400m gun, wouldnt use woodleighs in that though, proberly accubonds.! seen a few 7wsm for sale here in aus but they are pretty rare, latest wasa howa action in b n c stock? had all the gear but wanted over 2g .

 

[iron cat]

My thoughts are at 300 to 400meters you are not going to send s difference on an animal as far as killing goes- i’ve Seen the results using both with no issues .
As far as “ better “ goes, it is all about being able to shoot at those distances and one is not going to make you s better shot using ond ad opposed to the other,as far as my personal experience goes ,
Cat

 

[northern skies]

At 300 you're not going to see a practical difference!

 

[remington jim]

Leave your Montana as a 7-08, it will do anything the 308 win will. Out of the cartridges you mentioned, if it were me, I would go 284win but I would want it in a 24" barrel. Anything less than a 24" barrel wouldn't be worth it for the gains you would get imo, unless of coarse you just want something different.

HI Pete i'm with you on the 284 Win as i have one with a 22 " barrel it still out performs the 7-08 and 308 by 150 fps ! RJ

 

[pete dobinson]

HI Pete i'm with you on the 284 Win as i have one with a 22 " barrel it still out performs the 7-08 and 308 by 150 fps ! RJ

Yup, I hear ya RJ I have a 20" barrelled 284 and had one with a 22" both Browning rifle's, maybe had slow barrels. I swore if i got another 284win it would have to be a 24" . The 284 case has a lot more volume than the 7-08 and 308 so it wins the velocity game for sure.

 

[Slimbo]

todd my thoughts were along the lines of the 270 wsm with 24 barrel to be a bit more specific 400m gun, wouldnt use woodleighs in that though, proberly accubonds.! seen a few 7wsm for sale here in aus but they are pretty rare, latest wasa howa action in b n c stock? had all the gear but wanted over 2g .

That 708 stoked with accubonds will do 400 meters all day long.