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<blockquote data-quote="Aoudad shooter1975" data-source="post: 1925753" data-attributes="member: 102560"><p>Most of the short mags seem to do pretty well--I have played around a lot with the 338 RCM (I know I had a friend build one with a 22 in barrel and I have one with a 19...now I know that is not a lot of difference (3 inches)but only average of 22 fps difference in velocity I feel that could just be the barrel.</p><p></p><p>I have a 7 SAUM with a 22 in barrel a guy I shoot with at the range has a LR gun in a 7 SAUM with a 26 in barrel--in most of our loads ther is less than 100 feet per second difference--but honestly he is running different powders--and in some cases different bullets of equal weight--so really not apples to apples.</p><p></p><p>The difference between my 22 in 338 Norma and my 24 in 338 norma is 27 fps adv...</p><p></p><p>My gunsmith uses a 7 STW 24 in barrel and he swears he loses very little--as to numbers on that I am not sure</p><p></p><p>I have always found hunting either in my gator or putting it in my stand or pack a 20-22 in barrel just "fit". Now that is not to say I don't like to squeeze everything I can. I will rebarrel my very old 257 weatherby and the tube will not be less than 24 more likey 25 inches but it will not be 28 inches... I put a 24 inches on my 338 norma to get everything out of it. So this was a really long answer to say the rounds I have had good luck with in barrels shorter than 26 that I saw little or no decline in performance are some usual suspects so really nothing enlightening :</p><p></p><p>224 Valkyrie</p><p>6mm creedmoor/6mm Remington/243 win</p><p>243 WSSM</p><p>6.5x47 Lapua</p><p>6.5 Grendel</p><p>6.5 Creedmoor</p><p>7-08 (id love to do a SAW)</p><p>7 SAUM</p><p>300 WSM</p><p>338 RCM</p><p>338 Norma</p><p>9.3x62</p></blockquote><p></p>
[QUOTE="Aoudad shooter1975, post: 1925753, member: 102560"] Most of the short mags seem to do pretty well--I have played around a lot with the 338 RCM (I know I had a friend build one with a 22 in barrel and I have one with a 19...now I know that is not a lot of difference (3 inches)but only average of 22 fps difference in velocity I feel that could just be the barrel. I have a 7 SAUM with a 22 in barrel a guy I shoot with at the range has a LR gun in a 7 SAUM with a 26 in barrel--in most of our loads ther is less than 100 feet per second difference--but honestly he is running different powders--and in some cases different bullets of equal weight--so really not apples to apples. The difference between my 22 in 338 Norma and my 24 in 338 norma is 27 fps adv... My gunsmith uses a 7 STW 24 in barrel and he swears he loses very little--as to numbers on that I am not sure I have always found hunting either in my gator or putting it in my stand or pack a 20-22 in barrel just "fit". Now that is not to say I don't like to squeeze everything I can. I will rebarrel my very old 257 weatherby and the tube will not be less than 24 more likey 25 inches but it will not be 28 inches... I put a 24 inches on my 338 norma to get everything out of it. So this was a really long answer to say the rounds I have had good luck with in barrels shorter than 26 that I saw little or no decline in performance are some usual suspects so really nothing enlightening : 224 Valkyrie 6mm creedmoor/6mm Remington/243 win 243 WSSM 6.5x47 Lapua 6.5 Grendel 6.5 Creedmoor 7-08 (id love to do a SAW) 7 SAUM 300 WSM 338 RCM 338 Norma 9.3x62 [/QUOTE]
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