I think your going to find barrel life about the same in both, 300RUM & 7MM STW. Yes you have a larger bullet selections, but the BC's on the 7MM bullets are better. Your powder use is going to be about the same. Most people are going to want a muzzle brake on a 300RUM, I had one on my sendero but had it cut off. I don't think a muzzle brake is as important on the STW is it is on the RUM. I you look around on gunbroker you might find an older sendero in the STW caliber and it should be the first version of the sendero and you won't have the big palm swell as the newer sendero, I think more people dislike the palm swell then like it.
As far as BC's go, look at JLK bullets, their 168gr 7MM bullet has a BC of 690, the 189gr 7MM bullet has a BC of 735. Then compare that to berger 168gr -BC 617 and 180gr -BC 659
With 30cal bullets a 210 berger has a BC of 631 and JLK bullets 210 bullets have BC's of 665 & 680.
If I could sell my sendero tomorrow and have enough money to buy a STW I would do it in a heart beat. Also retumbo is one of the better powders. Now on the regular 7MM I use to use IMR 4831 @ 67gr with a 162 hornady BTSP, it was very acurate and deadly on Oregon coast blacktail deer.
Good luck on your search.
Thanks guys, I appreciate that you understand that I am a little unsure
as to which way to go. I decided last year that I want a nice well balanced lighter weight gun. For walking/stalking, as well as for shots out to 600yds. The 7 stw sounds like a great option.
I know the bullet, load combination is as important as a good gun, and I will be learning as much as I can about reloading.
I don't mind recoil all that much while hunting, just want to set up something that is a bit more comfortable, for a follow up shot, and I want to shoot flat and hard for the elk at range. This is why I asked about loading down with a smaller bullet, in the 300 rum.
I can buy a very nice 300 win, but wonder about the drop and wind affects at longer range. I have one shot at this, I don't want any gun safe queens.
About the only cartridge that I see that has the STW beat in downrange velocity and energy is the Lazzeroni and there your going to spend big bones to get the gun and their cases. If you go to best of the west's website they have a chart that shows a comparisson between the 7MM mag and 300RUM and just the 7 Mag has it beat for downrange stuff. I know the best of the west guys really use the heck outta the 7Mag. But I still think the STW is the cats meow. Find a good gunsmith in your area and when you get the gun have it accurized, bedded, floated and get either a timney or jewell trigger. I myself have a jewell and don't regret spending a little extra, they are sweet triggers.
Another awesome long range cartridge is the 6.5X284, the benchrest guys are shooting out to 1000 yards with it. I would not have a problem taking an elk with it out to 600 yards. Very little recoil and light gun, excellent for packing around all day in the mountains and never know its there.
I like my 300RUM, but if I had it to do all over again I would go 7MM STW all the way and not look back. Good luck
I know this is a reloading section and I have helped to hijack my own thread, but anyone else care to comment on the 7stw, vs a 300 rum, for shooting, recoil, and down range killing power. I wont try to beat this thread to death, and again my appretiation.
I like the balistics of the 7MM STW better then the 7RUM. Very few guns can still be pushing a 140gr bullet at 2550fps out at 500 yards, the 7RUM is only getting just over 2200fps at 500 yards with a 140gr bullet. Of course that is with factory ammo.
I have been doing some reading in the last while, and now think that the 300wsm is a good candidate as well. Why I am not sure but the 7rum was never in the picture. The 300wsm has a lot going for it, including accuracy, and barrel life. One load for all hunting will be it.