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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 RUM barrel life
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<blockquote data-quote="AZShooter" data-source="post: 841794" data-attributes="member: 5219"><p>Just looked at my records. 27" #5 fluted lilja 300 RUM has 680 rounds through it. Still shooting quite accurately. BUT it is a real chore to clean. I just looked at the bore with a hawkeye bore scope and there is some cracking as far as 8" up the barrel. Not too bad when compared to my 257 with 750 rounds or the 6mm-284 with 850 rounds. </p><p> </p><p>I also tried all sort of bullets. Most recently for grins I tried the 168 match target hybrids using the load that worked well with 168 Sierra Mks. Shot three incremental powder charges and one had the bullets cutting into one another at 200 yds. The velocity was 3550 or so. </p><p></p><p>I set aside this barrel because its twist is not enough for the 230s which I wanted to try. Took at 24" Remington barrel in 300 win mag rethreaded it and rechambered it for 300 RUM on this old push feed model 70. Used a Pacific tool and gauge reamer. Shoots the 230s to my satisfaction with RL-33 at 2975 fps. </p><p></p><p> MontanaRifleman: </p><p></p><p>Just grabbed the spec sheet from PT & G: The reamer has the a Midway # 974821 </p><p>Throat angle is 1 degree. I asked Dave about that and he said they found that it worked better than the usual 1 degree 30 min. </p><p></p><p>Has .3450" neck with .3091" dia in freebore area</p><p></p><p>I have no idea why those particular dimensions but I leave that to Dave's discretion. All of the 17 reamers he has made for me and my friend Dan have worked.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 841794, member: 5219"] Just looked at my records. 27" #5 fluted lilja 300 RUM has 680 rounds through it. Still shooting quite accurately. BUT it is a real chore to clean. I just looked at the bore with a hawkeye bore scope and there is some cracking as far as 8" up the barrel. Not too bad when compared to my 257 with 750 rounds or the 6mm-284 with 850 rounds. I also tried all sort of bullets. Most recently for grins I tried the 168 match target hybrids using the load that worked well with 168 Sierra Mks. Shot three incremental powder charges and one had the bullets cutting into one another at 200 yds. The velocity was 3550 or so. I set aside this barrel because its twist is not enough for the 230s which I wanted to try. Took at 24" Remington barrel in 300 win mag rethreaded it and rechambered it for 300 RUM on this old push feed model 70. Used a Pacific tool and gauge reamer. Shoots the 230s to my satisfaction with RL-33 at 2975 fps. MontanaRifleman: Just grabbed the spec sheet from PT & G: The reamer has the a Midway # 974821 Throat angle is 1 degree. I asked Dave about that and he said they found that it worked better than the usual 1 degree 30 min. Has .3450" neck with .3091" dia in freebore area I have no idea why those particular dimensions but I leave that to Dave's discretion. All of the 17 reamers he has made for me and my friend Dan have worked. [/QUOTE]
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300 RUM barrel life
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