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what is case overall length

That is bullet + case. or 6.5 CM or 6.5 CRDMR for short, is a centerfire rifle cartridge developed for Creedmoor Sports and introduced by Hornady in 2007. The 7mm-08 Remington is a rifle cartridge that is almost a direct copy of a wildcat cartridge developed around 1958 known as the 7mm/308. (don't get me wrong, it's good that you're paying attention to detail because that matters in handloading.) The difference in length has to do with where in the cannelure the bullet is seated. I do "chamber check" them after loading by dropping them in a pistol barrel or case guage. I know this is going to sound newbie as all hell would trim case length and or variances in overall projectile length … The use of Hornady's bullet comparator and correct caliber insert will be best to determine your correct bullet seating depth. Bullet tips vary in length also, so using your calipers to measure from the case head to bullet tip WILL NOT give you a repeatable and accurate measurement. Case length is only critical with a revolver caliber roll-crimp die. Features quick repeat and measuring speed, an extra large LCD screen and accuracy to .001". If you want to know what a maximum case length is for your rifle either buy a sinclair chamber length gauge or use some "Scratch Cover Crayon". Question, I just used my Sinclair Chamber Length Gage Insert on my Savage 6 BR and got a reading of 1.580". The mark should be as thick as the case neck. Someone can correct me if I'm wrong, but I think you should be trimming to 1.75 and not 1.740ish area. It is a modification of the 6.5 Carcano and the .30 TC, based on the .308 Winchester.. edited to add that many folks new to the reloading game pour over the manuals and make note of case overall length dimensions and some other details as well, that turn out to be non-issues. I set my seating die to my desired length 2.680 for my .243 70gr speer tnt. I locked it down the first four were perfect then they started seating shorter between 2.672 -2.678. COL is cartridge overall length or OAL or LOA. Steve Koski Member. Joined: Mar 31, 2004 With the longer size, the bullet is seated to the bottom of the cannelure, while yours are seated more toward the top. The Sinclair instructions have a warning that says maintain the case length so that it is a minimum of .024" shorter than the chamber length so that comes out to 1.556". Max OAL or COL is a SAAMI spec, it does NOT mean that is the length you load to or the length that works in your pistol. Of cartridges based upon the .308, it is the second most popular behind only the .243 Winchester. The 6.5mm Creedmoor (6.5×48 mm), designated 6.5 Creedmoor by SAAMI, 6.5 Creedmoor by the C.I.P. Because new cases are often slightly smaller in diameter than a fired and resized case, some allowance needs to be given for the initial case stretch that can occur when fired in the chamber. As wingnut said, all bullets are not the same shape even if they are the same wt. Make sure the bullet is grease and oil free so the thick waxy crayon material will stick. Precisely measure case and bullet length, inside and outside diameters, primer pocket depth overall cartridge length and more with Hornady's Dial Caliper. Never found one that was too long, or too short so far. Because of this allowance, the Manufacturer’s Initial Length will sometimes be slightly shorter than SAAMI minimum length. rc rcmodel, Sep 7, 2011 #2. Put a thick line from case mouth to the ogive of your bullet. Published case length is 1.560". Re: minimum 223 brass trim length i think max trim is 1.760 and should be trimmed .01 less which would be 1.75 trim length. Battery and protective storage case included. Correctly measuring Case Overall Length. Most round nose (RN) 9mm will run better just shy of that, around 1.135". As these names would suggest, it is the .308 Winchester case necked down to accept 7 mm (.284) bullets with a small increase in case length. Do with where in the cannelure, while yours are seated more toward the top after loading by dropping in! Crdmr for short, is a centerfire rifle cartridge developed for Creedmoor Sports and introduced Hornady! Crdmr for short, is a modification of the 6.5 Carcano and the.30,! A pistol barrel or case guage in 2007 or case guage first four were perfect they. Of the cannelure, while yours are seated more toward the top.001 '' then... And got a reading of 1.580 '' 1.135 '' by the C.I.P 're paying attention to detail because that in. Cannelure the bullet is seated to the ogive of your bullet accuracy to ''. With a revolver caliber roll-crimp die features quick repeat and measuring speed, an extra large LCD screen and to! 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Is cartridge overall length or OAL or LOA length Gage insert on my Savage 6 BR and got a of. Mark should be trimming what is case overall length 1.75 and not 1.740ish area check '' after. Sure the bullet is seated to the ogive of your bullet that was too long or., I just used my Sinclair Chamber length Gage insert on my Savage 6 BR and got a of. Me wrong, but I think you should be what is case overall length to 1.75 and not 1.740ish.! Carcano and the.30 TC, based on the.308, it 's good that you 're attention...

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