.300 WSM Crimped or Not ???

Mobeasto

Mobeasto

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I'm about to reload for a friend I wanna know if It is better to crimp the bullet or not... I mean this is a hunting rifle

We will be using Barnes Tsx bullet that I think are harder to crimp...

waiting for your answer..
 
I shoot the TSXs out of my 270 WSM and don't crimp. I personally don't think that crimping is necessary on anything but the largest rifles, but some guys feel that it gives them more consistent loads. I've never crimped any of the rifle loads that I've loaded though.
 
I would say yes. usually anything with a heavy recoil + magazine requires crimping. The easiest way to decide to crimp or not is to measure the OAL of the ammo, load it into the magazine, shoot a couple of rounds and then measure the OAL of the ammo in the magazine. if OAL changes you have your answer.
 
I've shot the 300 WSM extensively, and there is no need for a crimp if you get good bullet tension, and there is enough neck bearing surface on the bullet. Barnes reccomends crimping their 130gr Bullet, though
 
I crimp my 300 WM just for the sake of crimping it...Can't say if it moves under recoil if uncrimped or not, but what the heck. Most of my bullets have a cannelure, so I just put a slight crimp with the Lee Factory Crimp die on em...Even if they don't have the cannelure.

Can't hurt...doesn't reduce accuracy, maybe improves it.
 
The point of crimping the bullet in light caliber magazine rifles is not to prevent bullet set back, but to produce the most consistent round to round bullet pull weight possible when the bullet cannot be seated long enough to touch the rifling due to the magazine length. That's why I crimp all of my magazine fed rifle ammo regardless of power, provided there is a crimping groove. In the single shots I can seat the bullets long enough to contact the rifling, and that uniforms the bullet pull weight.
 
I load 168gr TSX's in my 300WSM, and have never crimped. No issues. I generally don't crimp any bolt gun loads (don't have any real big bolt guns) with the exception of 55grNBT in my .243 (short bullets = small bearing surface.)
 
loading for this round for 4 years and have tried several bullets.using nosler partitions and no crimp.if there is no ring to crimp in you should not be crimping!
 
FWIW I crimp 3 cartridges only; .458 Lott; .45-70 and .405Win.

Those are all straight wall cases, and require use of a case mouth bell die, that flares case mouth slightly. I crimp to get rid of that as much as anything. I'm not sure that the .405Win requires it, but the .45-70 and .458 Lott sure do.

I don't see why the .300WSM would require crimping, at least with a conventional bullet. The bands on the TSX might be a reason to need it, depending on how deep you seat it.
I seem to recall someone else had issues with his (.338WM I think) TSX due to the depth he was seating.
 
With the exception of the 30-30, 38-55 and the 45-70, I have never crimped any hunting bullet in any chambering. Never saw any reason to, and have not been treated to any surprises because I did not crimp. Regards, Eagleye.
 
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