Over on another form, one cartridge designer agrees with the comments given here on most bullets being weak at .22-06 speeds, but feels the 3 groove barrels are worth any disadvantages (for what it's worth).
The gunsmith in this thread is Kirby Allen who I have a great deal of respect for and he has done work for me on several rifles. this thread is from 2005 and I know he has changed his mind on this topic since that time on large capacity 22cal and 6mmcal fast twist 3 groove barrel's. He hangs out on Long Range Hunting.com and we have discussed this topic many times in the last 5 years.
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