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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
18-20" 300 RUM: change my mind..
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<blockquote data-quote="QuietTexan" data-source="post: 2632405" data-attributes="member: 116181"><p>Is the can rated for that short a barrel? All of my cans other than TBAC 338 Ultra are 22" or longer for 300 RUM. 16" for short mags and 18" for normal mags, but jumps to 22" for the RUMs and Norma/Lapuas, basically anything that butts up against 90-100gn of powder charge.</p><p></p><p>3.850" would feed almost all of my 300 RUM loads except for the longest VLDs, so not an issue if you're set on the ELD-Ms. The RUM might be the best choice to stay on the smaller bolt face for a short barrel because nothing will beat its displacement, but in the max power game case efficiency does come in to play so I'm changing to the .590 bolt face because the fatter Lapua/Norma <u>derivatives</u> can beat the RUM. 30-338 Lapua Improved, 300 Terminator, etc. But other than a bigger fireball they're not going to offer you anything from a 20" barrel that a RUM won't.</p><p></p><p></p><p>Just to poke you, my RUM actions are all getting new barrels. One has a 30 Sherman already on, and I'm doing a second 30 Sherman plus a 338 Edge to repurpose my RUM brass.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2632405, member: 116181"] Is the can rated for that short a barrel? All of my cans other than TBAC 338 Ultra are 22" or longer for 300 RUM. 16" for short mags and 18" for normal mags, but jumps to 22" for the RUMs and Norma/Lapuas, basically anything that butts up against 90-100gn of powder charge. 3.850" would feed almost all of my 300 RUM loads except for the longest VLDs, so not an issue if you're set on the ELD-Ms. The RUM might be the best choice to stay on the smaller bolt face for a short barrel because nothing will beat its displacement, but in the max power game case efficiency does come in to play so I'm changing to the .590 bolt face because the fatter Lapua/Norma [U]derivatives[/U] can beat the RUM. 30-338 Lapua Improved, 300 Terminator, etc. But other than a bigger fireball they're not going to offer you anything from a 20" barrel that a RUM won't. Just to poke you, my RUM actions are all getting new barrels. One has a 30 Sherman already on, and I'm doing a second 30 Sherman plus a 338 Edge to repurpose my RUM brass. [/QUOTE]
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18-20" 300 RUM: change my mind..
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