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Long Range Hunting & Shooting
CALLING ALL .243 AI SHOOTERS. I'M CONSIDERING A CALIBER SWAP ON SENDERO PLATFORM
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<blockquote data-quote="BallisticsGuy" data-source="post: 1391347" data-attributes="member: 96226"><p>Built myself a .243AI on a switch barrel savage 10FPSR. My chamber is extremely tight (Columbia River Arms, excellent chamber, killer barrel .5" groups with almost anything). Necks come out .2430 inside neck diameter from a fired case. </p><p></p><p>Running RL-23 at 45.5gn and 108gn ELD-M and 115gn DTAC's at 3180 (same load spec, same FPS both bullets). Case growth is zero so far. It also shoots 55gn varmint bullets over 4K fps really easily. 8 twist is it really. Fireform load was 39.5 gn under a 108. Perfectly formed cases.</p><p></p><p>I turned my Winchester m70-post into a switch barrel gun with a barrel nut. Good stuff. </p><p></p><p>The match chamber may be tighter or have a longer throat. You'll need to find out what the difference actually is. My barrel is throated pretty short but I have zero issues getting 115's to 3200fps even with the bullet seated pretty deep. .243AI has a huge boiler room so I wouldn't worry about having enough.</p></blockquote><p></p>
[QUOTE="BallisticsGuy, post: 1391347, member: 96226"] Built myself a .243AI on a switch barrel savage 10FPSR. My chamber is extremely tight (Columbia River Arms, excellent chamber, killer barrel .5" groups with almost anything). Necks come out .2430 inside neck diameter from a fired case. Running RL-23 at 45.5gn and 108gn ELD-M and 115gn DTAC's at 3180 (same load spec, same FPS both bullets). Case growth is zero so far. It also shoots 55gn varmint bullets over 4K fps really easily. 8 twist is it really. Fireform load was 39.5 gn under a 108. Perfectly formed cases. I turned my Winchester m70-post into a switch barrel gun with a barrel nut. Good stuff. The match chamber may be tighter or have a longer throat. You'll need to find out what the difference actually is. My barrel is throated pretty short but I have zero issues getting 115's to 3200fps even with the bullet seated pretty deep. .243AI has a huge boiler room so I wouldn't worry about having enough. [/QUOTE]
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CALLING ALL .243 AI SHOOTERS. I'M CONSIDERING A CALIBER SWAP ON SENDERO PLATFORM
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