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Extreme Long Range Hunting & Shooting (ELR)
338 SnipeTac help
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<blockquote data-quote="ELR Researcher" data-source="post: 1082193" data-attributes="member: 19541"><p>OP - I'll assume you are talking 1.450 because your TAC408 is 1.450. I too like to have my barrels and actions/receivers blend well.</p><p> </p><p>Virtually all the major barrel houses will provide a 1.450, you just need to tell them that is what you want. Sendero could be a "proportional" Sendero since the standard Sendero is 1.250. You'd need to tell them how you want them to translate since there is no actual "proportional" Sendero spec. Both McGowen and PAC-NOR have weight calculators that will help you set the dims that meet your need - see <a href="http://www.mcgowenbarrel.com/barrel-weight-estimator/" target="_blank">McGowen Precision Barrels – Barrel Weight Estimator</a> and <a href="http://pac-nor.com/cgi-bin/bweight.cgi" target="_blank">Barrel Weight Calculator - PAC-NOR Barreling, Inc. - Precision Rifle Barrels - Pac-Nor.com</a></p><p> </p><p>9.35-9.4 is pretty much the standard twist for 338 LM and 338 NM. Depending on what type of shooting you will be doing - and which projectiles you will be using - that may be fine or on the slow side. I'd spend some time looking at the projectile manufacturer's specs and see what they are calling for. They will typically say, "x.xx or faster" but not give you much help with application. </p><p> </p><p>You may also find 30" is on the short side for this cartridge. Again, depending on your application. 32"-36" are common.</p></blockquote><p></p>
[QUOTE="ELR Researcher, post: 1082193, member: 19541"] OP - I'll assume you are talking 1.450 because your TAC408 is 1.450. I too like to have my barrels and actions/receivers blend well. Virtually all the major barrel houses will provide a 1.450, you just need to tell them that is what you want. Sendero could be a "proportional" Sendero since the standard Sendero is 1.250. You'd need to tell them how you want them to translate since there is no actual "proportional" Sendero spec. Both McGowen and PAC-NOR have weight calculators that will help you set the dims that meet your need - see [url=http://www.mcgowenbarrel.com/barrel-weight-estimator/]McGowen Precision Barrels – Barrel Weight Estimator[/url] and [url=http://pac-nor.com/cgi-bin/bweight.cgi]Barrel Weight Calculator - PAC-NOR Barreling, Inc. - Precision Rifle Barrels - Pac-Nor.com[/url] 9.35-9.4 is pretty much the standard twist for 338 LM and 338 NM. Depending on what type of shooting you will be doing - and which projectiles you will be using - that may be fine or on the slow side. I'd spend some time looking at the projectile manufacturer's specs and see what they are calling for. They will typically say, "x.xx or faster" but not give you much help with application. You may also find 30" is on the short side for this cartridge. Again, depending on your application. 32"-36" are common. [/QUOTE]
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