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It depends as I have four .30-06 rifles, a Mannlicher-Schoenaur carbine with 20" bbl., the Browning with 22" bbl., a Pre-64 Mod. 70 with 22" bbl and a Brno ZG-47 with 23.5" tube. I have chronoed my standard 180 NP loads from the MS at 2725 fps-mv., the others will do a bit more and I had some Fed. HE, but, I felt it was just a tad TOO hot and did not care for it.
My Browning just scrapes 2700 with the 200 NP and the particular older lot of RE-22 I have used in it; I have not chronoed my other rifles with these heacy bullets as I seldom use a .30-06 and have sold off those that I did carry, which were P-64s with 24"tubes. An educated guess would be about 2500-2600 with the 220 NP depending on bbl length.
Now, comes the crux of this and it is that a 180 NP at 2700-2800 mv WILL stop a Grizzly, IF, you hit him where you need to, I have seen about a dozen Grizzlies shot and this load did for a couple of them. SO, I would prefer to use my "all around" bullet for BOTH my Elk, Moose and Grizzly shooting as this is what you will be most familiar with and that is important in self defence, IMHO.
In .308 bore rifles, such as the '06 and .300 mags, I prefer to load 200 NPs and 200 Speers for hunting and practice, respectively and will hunt deer wit the Speers, as well. I have had rifles in both .30-06 and .300H&H that would put both of these into the same group with identical loads, an option should you become a handloader.
If, you are in the Lower Mainland, I shoot at Mission and if you wish to come with me, I will gladly chrono your loads in your rifle, if you wish. I make a full day of it when I go as I have a lot of guns to check and the pita drive from Vancouver makes this a practical necessity. PM me here if I can assist in this manner.
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