I haven't checked on availability of 300lm brass. I'm guessing there might only be 3 making brass for it at most.
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300 norma imp v 30-338 lapua imp
- Thread starter Coercionist
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Aussie Farmer
Member
Yep, I, too, went the NMI route over the LMI. One of the decisions also was the COAL requirement to take advantage of the long/heavy bullets.
KH_Outdoors
Well-Known Member
+1 for the Norma Magnum options! Lots of impressive Improved options out there. Considering COAL and magazine feeding, it seems most practical if you plan to hunt with it. "Practical" always being relative I guess...
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RH300UM
Well-Known Member
I have done both the NMI and the LMI 30 cals
300 nmi gets 3190 fps with a 230 otm in a 26in. 9 twist proof and N570
300 lmi gets 3260 with a 230 hybrid in a 27 in. 10 twist broughton with n570
Both are mag fed
The lmi uses a seekins detachable
mag which is no longer available
The nmi uses Hawkins bottom metal and a wyatts extended box
300 nmi gets 3190 fps with a 230 otm in a 26in. 9 twist proof and N570
300 lmi gets 3260 with a 230 hybrid in a 27 in. 10 twist broughton with n570
Both are mag fed
The lmi uses a seekins detachable
mag which is no longer available
The nmi uses Hawkins bottom metal and a wyatts extended box
azsugarbear
Well-Known Member
It's hard not to get caught up in the max velocity game. When building my big 338, I kept going back and forth between the 338 Lapua AI, the 338 Edge and the 338 RUM. All shot within 125 fps of each other. I finally realized that the difference was insignificant, as I never shot game at the end of my barrel. If you run all those cartridge ballistics out to 800+ yds using the same bullet, you will find that the difference in your velocity spread has dropped to 50 fps or so. Statistically insignificant. Base your decision on other factors discussed above such as: availability of the brass, cost in $ & time to prep the brass, cost of bottom metal & mag if a repeater is part of your game plan, availability of dies/reamers, etc.
This is probably the most practical suggestion I've seen.
What kind of velocity? (p.s. I tried to pm you but you don't have enough post)
yobuck
Well-Known Member
Well if your in need of a hot rod 30 cal, you would be hard pressed to find a better one than a 30x378.
But if your looking for a nice cartridge for a long range hunting gun, capable of handling easily the distance most animals are killed, then a 300 Norma would be my choice.
Forget the heavy bullets in 30 cal, just go to a large 338 and be done with it.
But if your looking for a nice cartridge for a long range hunting gun, capable of handling easily the distance most animals are killed, then a 300 Norma would be my choice.
Forget the heavy bullets in 30 cal, just go to a large 338 and be done with it.
Aussie Farmer
Member
28inch 1:10 350smk , 103gr AR 2217 , 2787fps
260 accubond. 106gn AR 2213sc , 3125fps
These are not max loads but loads with good SD ,ES
QuietTexan
Well-Known Member
I just ordered new barrels for my 30-338 LIMP. 36" in 6 twist and 9 twist. One for monos, one for Bergers.
6 twist? Wow.
I thought I was going fast at 8 twist. Even the heaviest mono I could find only requires an 8 twist.
