The rums i used had 30 inch tubes and long throats to stop pressure fluctuations when run hard
Throat erosion was a constant event and the 180 berger was not a reliable harvester of light thin skinned deer past 800yrds with its variable meplat diameter.
The 300g berger is a reliable harvester, more so than any other projectile thats beneath it in terms of calibre and weight.
Its not too tricky to make a 338 edge weigh 7 pounds without scope, which is often too light
I would rather have a 300wsm or 300 win mag pushing 208 amaxs at 2800-2900fps than a 7 mmrum for long range harvesting, and have used plenty of them now.
The 208 amax is a Hammer
A big fast bullet beats a little fast bullet every time
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