Long as you have "spare" bullet seating plugs, try this.
Originally Posted by Down Range
Smoke the end of a bullet and push a seating plug (hand held is fine) down onto the bullet nose till it just touches, then back it off. Look at the contact point on the bullet and compare it to the shape of the seating plug. Now chuck the seating plug into your drill and stick a tapered Dremel bit into the seating plug. Spin the plug with the drill rather than spinning the Dremel. All you're using the Dremel for is a tapered "grinding" tool to work on the spinning seating plug.
Relieve the contact point in the seating plug just a little, and try the smoked bullet again. It shouldn't take much, so be sure to remount the plug in your seating die and try that before removing metal a second time. You can make your own "custom" plug in a few minutes. For no extra cost or long waits.
Is it fixed yet..?
I've seen this with the tsx and the RCBS in 300 WSM my dad loads for.
I suggested he try another caliber seating plug. He took the plug out of a 270 win. die and simply threaded it into his 300wsm die.
This accomplishes what BrownBear too was suggesting.., changing the contact point.
You'll get it.
Best to ya,
Originally Posted by 358wsm
That's a great idea! Only been reloading close to 50 years and hadn't thought of it yet! Should work like a champ.
358wsm sounds like a great Idea! What size should I try 338 or 358?
Perhaps Murphy will chime in - I think he has reloaded for both of these previously and prob has some worthwhile recommendations/suggestions regarding these particular permutations of the "WSM platform".