The advantage the .30/06 has over a .308 is its ability to attain higher velocities with bullets heavier than 180 grs. Thus a .300 magnum has an advantage over the '06, and the .300 Ultra has an advantage over the .300, but the focus here is on the .30/06. While I suspect most '06 shooters seldom bother shooting anything longer or heavier than a 180 gr lead core game bullet, should you be someone who prefers heavy for caliber bullets, the Husqvarna might not be the best choice. The Husky has a 1:12 twist rather than the more common 1:10, and the difference between it and my 1:10 Brno is demonstrable, therefore I would probably choose the push feed M-70.
I tried some 240 gr Woodleighs in my wife's 1600, and the bullet holes showed significant yaw, where they performed normally when fired from my 1:10 Brno. The 240 gr Woodleighs measure 1.439" long, compared to 1.387" for the 180 gr TSXs the Husky is normally fed. The Woodleigh's marginal stability results in reduced penetration and is likely to cause the bullet to curve through the target, rather than penetrate in a straight line. This is due to the longer period of time it takes for a long bullet to recover from impact induced precession (yaw) relative to the the time it takes the same bullet to fully recover from precession when its rotational velocity is higher. If you've ever seen recovered bullets with squashed bases and/or expanded nose sections that are angled rather than flat, this is the result of impact induced precession.
Typically bullets shorter than 1.30" in length provide nominal stability from a 1:12 twist; a little longer can be used in warm temperatures, high humidity, at high altitudes, and a bit shorter if used at low temperatures, low humidity, at or below sea level. Considering this, it looks like I should reassess the 180 TSX for my wife's rifle, and I do have 180 gr Partitions on my loading bench.
A few examples of .30 caliber bullet lengths are as follows:
Woodleigh 240 gr PP - 1.439"
Barnes 180 gr TSX - 1.389"
Nosler 150 gr BT - 1.221"
180 gr BT - 1.367"
180 gr Partition - 1.188"
200 gr Partition - 1.356"
150 gr AB - 1.221"
165 gr AB - 1.321"
180 gr AB - 1.392"
200 gr AB - 1.490"
210 gr LRAB - 1.571"
Hornady 190 gr BTSP - 1.392"
165 gr GMX - 1.435"
165 gr SST - 1.274"