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The Basics, Starting Out
Best bullet weight for 300rum
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<blockquote data-quote="jmden" data-source="post: 256083" data-attributes="member: 1742"><p>It took me awhile on this site to realize the wisdom of the heavy for caliber bullets. I went through the 'speed' phase as well until I started looking at and understanding other numbers. With the 300RUM, I would start with the 200 AB as the light end of bullets for the chambering, then look at the 208 AMAX, 210 Berger and ultimately, the 240SMK. The 240SMK backed by around 103-104.5g of US869 will produce velocities at or just below 3000fps. With it's .711BC, it hold on to that energy quite well and has a good reputation (similar to the 300SMK) for killing well. I've put down two elk with in two years of using it, one at 450 and one at about 80yds. Having put 1000+ rounds down my 300RUM and knowing what I know now, I would've started with the 240SMK and never looked back. JMO. Good luck! Jon</p><p> </p><p>Edit: I'm loading the 240 right on the lands. 869 is definitely temp sensitive, I only shoot my load (104g) at or below 40-50 deg. (When it's gotten up to 60 when I first started using it, the velocity and pressure started climbing, but I got some amazing groups with the 200AB (109.5g) I was using at that time, but velocities where 3250 or more and pressure was too high for much case life--no problems extracting case though.) When I 'm at the range I put the ammo in a cooler at about 35 deg to attempt to get a more realistic idea of pressures more in line with the temps I'll be in when hunting.</p></blockquote><p></p>
[QUOTE="jmden, post: 256083, member: 1742"] It took me awhile on this site to realize the wisdom of the heavy for caliber bullets. I went through the 'speed' phase as well until I started looking at and understanding other numbers. With the 300RUM, I would start with the 200 AB as the light end of bullets for the chambering, then look at the 208 AMAX, 210 Berger and ultimately, the 240SMK. The 240SMK backed by around 103-104.5g of US869 will produce velocities at or just below 3000fps. With it's .711BC, it hold on to that energy quite well and has a good reputation (similar to the 300SMK) for killing well. I've put down two elk with in two years of using it, one at 450 and one at about 80yds. Having put 1000+ rounds down my 300RUM and knowing what I know now, I would've started with the 240SMK and never looked back. JMO. Good luck! Jon Edit: I'm loading the 240 right on the lands. 869 is definitely temp sensitive, I only shoot my load (104g) at or below 40-50 deg. (When it's gotten up to 60 when I first started using it, the velocity and pressure started climbing, but I got some amazing groups with the 200AB (109.5g) I was using at that time, but velocities where 3250 or more and pressure was too high for much case life--no problems extracting case though.) When I 'm at the range I put the ammo in a cooler at about 35 deg to attempt to get a more realistic idea of pressures more in line with the temps I'll be in when hunting. [/QUOTE]
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Best bullet weight for 300rum
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