7mm mag reload question

[deer_assasin]

1.first does max.cartridge length include the tip of a ballistic tipped bullet or from where the bullet metal stops.

2. and second is it all right to be shorter than max.cartridge length to keep the bullet from touching the lans and grooves as weatherby recomends

3. and lastly if the bullet is longer than max cartridge length but doesnt touch the lans and grooves what effect will this have?

 

[skeeter]

1.first does max.cartridge length include the tip of a ballistic tipped bullet or from where the bullet metal stops.

OAL includes the tip

2. and second is it all right to be shorter than max.cartridge length to keep the bullet from touching the lans and grooves as weatherby recomends

Yes, the published OAL is what will work in the majority of production rifles. However in your rifle it may be shorter or longer till you are back of the lans.

3. and lastly if the bullet is longer than max cartridge length but doesnt touch the lans and grooves what effect will this have?

Magazine is usually the main restriction to your OAL. So you must determine what your mag will accept (max OAL) first then work on where to seat the bullet. In most cases the goal is to get .010 to .030 back from the lans(rifling)(FYI, some bullets suggest more of jump so consult the manufacturer via manual or contact as where to seat from the lans ie: barnes suggest .050 to start but say .03-.07 may be used for seating) however function in the magazine and feeding is paramount. If your longer than the listed OAL, shy of the lans and it functions fine in your mag no effects(in fact most exceed the listed OAL)

 

[Guest]

If you are using the exact combination listed, and seating to a shorter COL, be careful working up to max charge. As you seat deeper, case volume is effectively reduced, based on more case being occupied by the bullet rather than powder/airspace (the combustion chamber, so to speak). It should not make much difference in a rifle, but it might. In a pistol round, it can make a big difference, so be especially watchful in small case rounds when seating below the listed COL in a manual. Not to say it isn't safe, just to say caution should be adhered to when working toward max load.

If you are using a different bullet of the same weight as what is listed in the manual you have, then the same cautions apply, but in any case, not just deeper seating.

 

[deer_assasin]

I would like to thank you for the information it was very useful and answered all my questions and shut a few people up who were arguing the matter thanks again