7mm Rem Mag: Why it just might fall (Cartridge Wars)

finally we are back to cartridge wars it has been a while as i've got distracted with other videos that i wanted to bring to you guys but we're nearing the end of this thing in fact today we're gonna knock out two slots we're gonna talk about that 308 versus 300 rcm and some of the bigger sevens so in a recent video i said this you can never go wrong with seven mag i know everybody always says 30 odd six just go with the 30 out six for me it's 7 mag just go with the 7 mag and it got a lot of you wondering why why the 7 mag instead of the 30 odd 6 well let's look at the numbers 7 mag shooting about a 150 grain bullet which is very common for that versus a 30 out 6 shooting a 180 grain bullet which is also very common for that cartridge let's first take a look at the trajectory of both so you'll see the 7 mag just has it outpaced it's shooting a little bit of a higher bc bullet here it's shooting about 200 feet per second faster it just plain beats then let's take a look at wind drift as you can see the 7 mag also tends to take the cake here versus the 30 out six ballistically it's just better i mean it's shooting faster right then you look at the difference in energy and foot pounds of energy between the two of them and the amount of thump they're putting on the target is nearly identical the seven mag maybe has the slightest advantage out to extreme distances but for all intents and purposes they're the same but there's always a trade-off it's impossible to win in anything there's always a give and take and so we look at recoil now there is a recoil advantage to 30 out 6 and 7 mag but honestly it's so small that i think if i were shooting blindfolded and i shot one and then the other i don't know if i could tell you which is which i mean they're so very similar i can't tell the difference between a seven mag and a 30 out six recoil they're very very close so why would they be so close when the other numbers showed sig significant advantages on the other side of the teeter-totter right and the reason is it's shooting a lighter bullet a smaller caliber and so the thing that i love about the sevens is just how well it balances all of these numbers where we're trying to fit in you know the right amount of recoil but enough speed and power and everything else every time i look at this of just like what the best general big game cartridges are i tend to kind of look around the sevens they just seem to be an excellent balance so you can tell i'm a big fan of the seven rim mag but is the seven rim mag specifically the best you know long action magnum seven that there is well today in cartridge wars you need to vote to find out so first let's look at a few criteria so first we're going to take a look at popularity that usually has something to do with availability in terms of chamberings and rifles and ammo availability so if i take 82 of the most popular centerfire rifle cartridges and i rank them from most popular which is by way by the way the 308 it would certainly be the 223 if we were talking about semi-automatic but if we're talking about just bolt action the number one is 308 and we go way down the list to the least popular which i can't remember right now what it is how would the seven rim mag rank there in terms of popularity well it's actually number nine out of eighty two seven mag is a very very popular cartridge even though it's whatever 75 years old now the weatherby cartridge that is also here in cartridge wars um the seven weatherby mag would rank number 57 out of 82 the 7 millimeter stw would be 71 out of of 82 and the 7wsm 79 out of 82. the 7wsm is a good cartridge it really is it's a short action which a lot of people will value today we're going to talk about that in just a moment it has great ballistics very much to match the seven rem mag there's really not a whole lot wrong with it it does have a little bit of a short neck but it has just dive bombed it's just not popular at all a lot of the wsm cartridges were really well designed but were held back with lawsuits and different things and for whatever reason the marketing just died on those things and so 7wsm is just nearly gone because of popularity and availability all right next category that i want to take a look at to see which of these cartridges is best is taking a look at barrel length this is one that i really started considering about a year ago when i got a suppressor suppressors are a complete game changer but they are adding significantly to the barrel length and so where things used to be 24 or 6 and 26 inch barrels now i really think the future is 20 or 22 inch barrels on rifles and the reason i think the seven rim mag and most of these other cartridges here that are long actions are probably gonna slowly decline over the next few years is because of suppressors now with 90 day returns from the atf for tax stamps i think suppressors are going to explode on the market and suddenly everybody's going to be looking at the cartridges that can give them shorter barrel lengths so i spent like a day and a half a few months ago like trying to find a formula that could inform a recommended or or best barrel length for each one of the cartridges and following that that formula the seven rim mag would need a 25.25 inch barrel and that's normal when you see a seven mag it's probably about 60 percent of them are 24-inch barrels and 40 of them are 26 inch barrels and that's what the formula here shows as well the seven weatherby mag same 25.25 inches the 7stw that's a long skinny powder of column of powder 26.25 inch barrel because the 7wsm is s it's a short magnum it allows you to get down to a 23 inch barrel and so that as i've been seeing a ton of comments every time i talk about long action short action people are saying it doesn't matter i think it does i think it matters a lot right now because of this and i do think that's the achilles heel of the seven rim mag going forward is people may not want to choose it as much as soon as they start shooting or hunting suppressed all right next let's take a look at velocity between these four cartridges so i'm using for this hornady's 11th edition manual and if we put a 162 grain eldx in all of these these are about the velocities we could see you know they're all so similar you know that weatherby's gonna give you a little bit extra even with the magnum length cartridge the stw is so skinny it's really not getting you any real advantage um and the wsm is a tiny bit lower but essentially i mean these are all so close it makes not a whole lot of difference the 7 mag is going to be deadly to an elk at 600 yards and so do i really care if one of them has an extra 150 foot-pounds probably not okay drop because of the speed there is going to be slight differences in the bullet drop but out to 400 yards they're all gonna drop within three inches of each other one real problem with the sevens is we don't have a lot of new entrants in the sevens i have news about that by the way about a new seven we might be seeing this fall i think i'm gonna talk about that maybe in my next video or a very soon upcoming one when we talk about the 6.8 western man i i got some juice about the 6.8 western i talked to some very interesting people at shot show and i learned some things that i did not know so we're talking about that soon okay so the twist rate on all these i mean they're all between you know 9 and ten hornady recommends a one in nine point five twist to go over 160 grains and so that's a real problem with these sevens is you know you compare something like a 6.8 western to these sevens and you say well it's a larger caliber bullet we should be able to get heavier bullets but you really can't because they don't have the twist rates so now let's take a look for cartridge wars as you guys are picking between these two first the seven millimeter weatherby well i think the problem here is it's very over bore like many of the of the weatherby cartridges but okay there are merits and drawbacks to that i think the bigger problem here is ammo is absurdly priced when we get into these ammo crunches you want a lot of manufacturers making the different types of ammo that you want to buy so there's some competition and they drop the price right that's why 308 ammo is so cheap right now compared to everything else because everybody loads for 308 but here i mean while norma and federal do load for the seven mil seven weatherby mag they don't do much in fact i haven't been able to find any available you're pretty much just relying on weatherby and so with one company and very hot demand prices go crazy they're one and over five bucks a shot for this stuff um no thank you okay then we take a look at the 7wsm this is an awesome cartridge this should be a lot more popular than it is it does have a little bit of a short neck and some people are saying that's not going to stabilize these longer bullets i don't know if that's valid or not but the cartridge is basically dead it's very hard to get your hands on anything 7wsm we look at the 7ram mag you guys know i love it but like some of these others i think the achilles heel going forward is the long barrel lengths that it requires and then we go to the 7stw i just don't think this thing has any chance of having any kind of resurgence because it requires a magnum length action so we have our short action and our long or standard action and then this one is you know it's almost 3.6 inches in length and that puts it in that magnum action length and so it's just much harder for companies to chain chamber for this we're getting even heavier guns it's this skinny little column of powder so we have to use long barrel lengths it just doesn't make a whole lot of sense by today's standards so which of these four cartridges should continue on you decide but there's also one thing um looking forward in cartridge wars we have 308 win versus the 300 rcm i don't know if i want to do a whole video on that the 300 rcm is for all intents and purposes did um and so my vote is to just kind of give the 308 win a buy for its first week i probably should have just combined those and to do one big 300 cal vid video but i i i don't like how i separated it so my vote is that we just give the 308 a buy for week one um we talk about the six point fives next and then we kind of put all this together and see who wins so your vote for the best seven and if we should give the 308 a bye the way to vote is not by commenting it is by clicking um to the to the poll uh so that i can get numbers of of what one thanks guys see ya

Channel: Backfire

Views: 203,372

Keywords: Backfire, Hunting, Outdoors

Id: ucP0b3QWInk

Length: 12min 52sec (772 seconds)

Published: Sat Jan 29 2022