7 wsm or 7-300wsm

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tim3500

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Good day . Looking into a little input into anybody using the 7wsm or the 7-300wsm . Iam not a long range paper puncher but practice at 400 and 600 were the clear cuts permit during the off season . The 7 wsm fits the bill but finding brass is poor Hornady and Bertram seems to be the way to go with the 7wsm . The 7-300wsm has me interested cause the availability of 300 wsm Brass and the longer necks on the 300 brass is easier on throat erosion, so they say . Doing the extra step in Brass prep is a trade off to having always to find Brass thats in short supply or is the 7wsm just got a bad name cause its a poor designed round. Iam just looking for facts on the two wsm cartridges.
 
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brass availability is the number one reason to go to 1 7mm-300WSM, velocity gain is marginal over the standard .284 win with 180's in a target rifle, for a hunting rifle with a 2-24 inch barrel you'll be fine.

Barrel life is a a subjective topic, 800 rounds to a f class shooter, 450 to a benchrest shooter and 2000 to a hunter, not enough info to what you are or what the rifle is destined for to make any comments on one over the over.
 
Ya I did look into the 7rsaum and its got a good following in the Benchrest crowd cant argue that but even the 7wsm is available at Cabalas being a small selection but still available and 300 wsm I have lots of it just prep is another step I just dont want to get into complicated setup for just one cartridge necking down and annealing Iam ok with once I have a good load
 
I don't mind the Hornady brass. 7saum is the sensible choice though, the Norma, ADG and Nosler brass is good.
 
Sure isnt much difference between the 7saum and the 7wsm after looking a Brass supply and ballistics there about equal . Doing the 7-300 wsm is more cost effective due to having all the supplies . The end result is it will be loaded with a 160 gr or 140gr bullets its splitting hairs . The 7saum would fit a Winchester 70 action really nice and be a different build for a Lefty bolt guy . Thanks for the imput
 
The shoulder is bumped up so it cant be chambered in the 270 wsm. This is the reason for the shorter neck. The 7mm wsm has a little more case capacity compared to the 270 wsm and the 300 wsm.
 
Working with what barrel life would be on a cartridge before accuracy falls off and let's say minimum reloaded brass cycles of 4x 200-300 on a WSM would be my starting point but that's just me. Iam not a one gun owner that would do me 10 years as a hunting rifle easy .I also have Brass that's 8 fireings and been anealed 2x on different cartridges but Iam not a expert just going by what I have read and experienced
 
It also depends on the type of firearm. My 7mm wsm is a Kimber Montana, its lightweight, not a rifle you shoot a lot at the bench. I also have several other rifles as well.
 
I build one on a Sako 75 action. Great cartridge. Though it really isn't much to brag about, doesn't really stand out against other 7mm cartridges. Mine is 24 inch barrel, I wouldn't recommend any shorter. When I say it doesn't stand out, I am referring to the velocities you can achieve. I had a 280 that would almost hit the same velocities, and a 7-08 in a TC with a 28" barrel that will do almost the same. But, if you have a rifle made for it, and want a WSM cartridge, in my opinion the 7mm WSm is the best one. I used 270 WSM brass and fire formed it. Works great, super accurate, and it is just a fun cartridge, that isn't that popular which is a plus for me, as I like things that are a bit more rare.
 
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