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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
a good Long Range non barrel burn caliber
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<blockquote data-quote="scottyd2506" data-source="post: 873948" data-attributes="member: 19778"><p>338 RCM? I like the idea.</p><p></p><p>I'll use 1 mph wind as a reference to being off on 1 mph of estimating wind (even with a meter) say it's 12 mph but you call it 11 or 13 mpg.</p><p></p><p> doing the calculations a mistake of 1 mph wind at 90 deg the 7mm 180 hybrid at 3050 fps has 5.1" inches of drift off at 1000 yards</p><p></p><p> the 230 OTM from a 300 wm at 2700 fps would be 5.5" off at 1000</p><p></p><p> The 215 IOTM from a 300 wm at 2900 fps is 5.2" off at 1000 yards</p><p></p><p> The 300 OTM from a 338 RCM at 2550 fps is 5.3" off at 1000 yards</p><p></p><p> Yes it favors quite well with the others. 5.3 inch off is 5.3 off either left or right, add the group size in, and hitting a 16 inch steel plate may not be that easy till you walk the shots in. I'm sure your 338 RCM 30 in bbl has more speed than the avg 20-24 inch most guys have. sounds like you know your stuff.</p><p></p><p> For referral, the 308 launching a 175 SMK at 2600 fps is 9.8 inches off (1 mph mistake) cleanly missing the 16" steel plat that is 8 inches from center.</p><p></p><p> The 284 launching Hybrid 180's at 2800 fps is 5.9" drift at 1000, pretty good for a non barrel burner, but your 338 RCM has it beat.</p></blockquote><p></p>
[QUOTE="scottyd2506, post: 873948, member: 19778"] 338 RCM? I like the idea. I'll use 1 mph wind as a reference to being off on 1 mph of estimating wind (even with a meter) say it's 12 mph but you call it 11 or 13 mpg. doing the calculations a mistake of 1 mph wind at 90 deg the 7mm 180 hybrid at 3050 fps has 5.1" inches of drift off at 1000 yards the 230 OTM from a 300 wm at 2700 fps would be 5.5" off at 1000 The 215 IOTM from a 300 wm at 2900 fps is 5.2" off at 1000 yards The 300 OTM from a 338 RCM at 2550 fps is 5.3" off at 1000 yards Yes it favors quite well with the others. 5.3 inch off is 5.3 off either left or right, add the group size in, and hitting a 16 inch steel plate may not be that easy till you walk the shots in. I'm sure your 338 RCM 30 in bbl has more speed than the avg 20-24 inch most guys have. sounds like you know your stuff. For referral, the 308 launching a 175 SMK at 2600 fps is 9.8 inches off (1 mph mistake) cleanly missing the 16" steel plat that is 8 inches from center. The 284 launching Hybrid 180's at 2800 fps is 5.9" drift at 1000, pretty good for a non barrel burner, but your 338 RCM has it beat. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
a good Long Range non barrel burn caliber
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