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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Norma vs 300 Norma Imp
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<blockquote data-quote="Alex Wheeler" data-source="post: 2280562" data-attributes="member: 101859"><p>No it is not less finicky or easier to tune. In almost anything the larger the case, the less accurate it will be as a general rule. The most accurate, easiest tuning .30 is probably a 30BR. You would have a hard time making a .30br shoot much bigger than .3". But that would be a poor choice for hunting. Step up to the 1000 yd BR game or F class and the 300 wsm is on top for 30s. The bigger 300s were more popular in the past but the guys figured out the smaller wsm case was just more accurate day in day out, it agged better. So when you take a large case and make it even larger, dont expect to gain accuracy. If the design is good, like the 300 nmi, then you may not see it fall off much if any. Theres a handful of us that play around with these big cases in heavy bench guns. I have built a good amount of heavy BR rifles in 300 nmi, 338 and 300 lapua imps. Those big cases will not stand up with a 300 wsm shooting groups at 1k. They still shoot really good and Im not talking a huge difference. However, shooting 3 shot groups from a hunting rifle your unlikely to notice the difference in a lot of these cases. My 300 PRC has agged in the 3" range for the last four cold bore 3 shot groups fired at 1k. I have had 300NMI shoot as good or better, that comes down to barrel quality. So I guess the answer Im giving you is that yes, in the right rifles you would see a small accuracy drop as you go bigger and bigger. But in the rifles we shoot for lr hunting and elr you will not shoot the difference between a PRC and NMI, and I know both are capable of sub 3" 3 shot groups at 1k and most guys will never get them tuned to their potential. They all offer more accuracy them most will extract. The 300 NMI is still my personal favorite of the big 30s.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 2280562, member: 101859"] No it is not less finicky or easier to tune. In almost anything the larger the case, the less accurate it will be as a general rule. The most accurate, easiest tuning .30 is probably a 30BR. You would have a hard time making a .30br shoot much bigger than .3". But that would be a poor choice for hunting. Step up to the 1000 yd BR game or F class and the 300 wsm is on top for 30s. The bigger 300s were more popular in the past but the guys figured out the smaller wsm case was just more accurate day in day out, it agged better. So when you take a large case and make it even larger, dont expect to gain accuracy. If the design is good, like the 300 nmi, then you may not see it fall off much if any. Theres a handful of us that play around with these big cases in heavy bench guns. I have built a good amount of heavy BR rifles in 300 nmi, 338 and 300 lapua imps. Those big cases will not stand up with a 300 wsm shooting groups at 1k. They still shoot really good and Im not talking a huge difference. However, shooting 3 shot groups from a hunting rifle your unlikely to notice the difference in a lot of these cases. My 300 PRC has agged in the 3" range for the last four cold bore 3 shot groups fired at 1k. I have had 300NMI shoot as good or better, that comes down to barrel quality. So I guess the answer Im giving you is that yes, in the right rifles you would see a small accuracy drop as you go bigger and bigger. But in the rifles we shoot for lr hunting and elr you will not shoot the difference between a PRC and NMI, and I know both are capable of sub 3" 3 shot groups at 1k and most guys will never get them tuned to their potential. They all offer more accuracy them most will extract. The 300 NMI is still my personal favorite of the big 30s. [/QUOTE]
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300 Norma vs 300 Norma Imp
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