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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Question for S1
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<blockquote data-quote="mbianchini" data-source="post: 26389" data-attributes="member: 935"><p>S1 seems to me that your very knowledgeable on the 243 Ackley Imp. 40. I wanted to know if you are having trouble with RL-25 being temperature sensitive in colder weather. I was at the range this Saturday getting ready for the Western PA groundhog shoot here today. </p><p>I was interested if you ever tried N170 or H1000 and what kind of velocity you were getting with those powders and if they were temperature sensitive.</p><p>I was told by two shooters at the shoot that RL-25 works better when its hotter that 75°</p><p>From 60° to 66° there is a big difference in velocity. Any recommendations would be appreciated.</p><p></p><p>Rifle configuration. </p><p> </p><p>243 Ackley Imp. (.271) NK Chamber Reamer from Dave Manson which is throated .075 free bore for the 105 VLDs</p><p>Farley "S" action and Farley 30mm rings.</p><p>2 Krieger 8" twist 28.5" HV,& Lilja 8" twist 29" HV</p><p>Jewell Trigger.</p><p>Leupold 18x40 LR boosted & 1/16 MOA dot on 40x by Premier Reticles</p><p>Dave Bruno did the Chambering of the barrels.</p><p>I did the stock work and the Sikken Viper Race Yellow Paint and clear</p><p>Jewell 1.5oz BR trigger. Bat Machine Stainless Trigger guard</p><p>Shehane McMillan ST-1000 stock from Bill Shehane (D&B Supply)</p><p>Shehane TRACKER polished billet aluminum buttplate</p><p>Weight 16.5 lbs.</p><p></p><p>I started shooting at 10:00am the temperature was 60° my load was </p><p>49.0gr RL-25</p><p>Lupua brass </p><p>Federal 210 match primers</p><p>JLK 105s on the lands.</p><p></p><p>I was shooting three shot groups through my Oehler P35.</p><p></p><p>First. 60°</p><p></p><p>3225 fps</p><p>3215</p><p>3214</p><p></p><p>Second 62°</p><p></p><p>3289 fps</p><p>3255</p><p>3277</p><p></p><p>Third 66°</p><p>Dropped powder down to 48gr</p><p></p><p>3245fps</p><p>3229</p><p>3237</p><p></p><p> <img src="http://images.andale.com/f2/129/124/6198627/1050284930859_matts243AI.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="mbianchini, post: 26389, member: 935"] S1 seems to me that your very knowledgeable on the 243 Ackley Imp. 40. I wanted to know if you are having trouble with RL-25 being temperature sensitive in colder weather. I was at the range this Saturday getting ready for the Western PA groundhog shoot here today. I was interested if you ever tried N170 or H1000 and what kind of velocity you were getting with those powders and if they were temperature sensitive. I was told by two shooters at the shoot that RL-25 works better when its hotter that 75° From 60° to 66° there is a big difference in velocity. Any recommendations would be appreciated. Rifle configuration. 243 Ackley Imp. (.271) NK Chamber Reamer from Dave Manson which is throated .075 free bore for the 105 VLDs Farley “S” action and Farley 30mm rings. 2 Krieger 8" twist 28.5" HV,& Lilja 8” twist 29” HV Jewell Trigger. Leupold 18x40 LR boosted & 1/16 MOA dot on 40x by Premier Reticles Dave Bruno did the Chambering of the barrels. I did the stock work and the Sikken Viper Race Yellow Paint and clear Jewell 1.5oz BR trigger. Bat Machine Stainless Trigger guard Shehane McMillan ST-1000 stock from Bill Shehane (D&B Supply) Shehane TRACKER polished billet aluminum buttplate Weight 16.5 lbs. I started shooting at 10:00am the temperature was 60° my load was 49.0gr RL-25 Lupua brass Federal 210 match primers JLK 105s on the lands. I was shooting three shot groups through my Oehler P35. First. 60° 3225 fps 3215 3214 Second 62° 3289 fps 3255 3277 Third 66° Dropped powder down to 48gr 3245fps 3229 3237 [img]http://images.andale.com/f2/129/124/6198627/1050284930859_matts243AI.jpg[/img] [/QUOTE]
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