what would most of you hand-loaders do when you hand-load if you had a choice? Would you jam your bullets into the lands? or would you jump your bullets to the lands?.I know the size of the clip determines the max length of your cartridge but what if it was a single shot rifle and no clip?and accuracy is all that matters.
to jump or jam to the lands
- Thread starter dozernomore
- Start date
Re: to jump or jam to the lans
If accuracy is all that matters, then you do what the rifle likes. That being said I don't like jamming and have moved away from bullets that required jamming for best results. That's just my feelings, and there are a lot of people that jam with great success.
If accuracy is all that matters, then you do what the rifle likes. That being said I don't like jamming and have moved away from bullets that required jamming for best results. That's just my feelings, and there are a lot of people that jam with great success.
well then !! that settles it,,I'll keep em jammed,I used it all summer with no issues on predator's and varmint's. ,I wont be shooting my 65gr v-max 3555fps load again till spring,I will just watch, very closely, for any signs of excessive pressure and bullet seating, a lil more with this jammy load..I have just switched over to my 55gr nossle ballistip 3945fps winter yote load..Thanks ALL !
Re: to jump or jam to the lans
I am the fan of the jump start, I want my bullets to have a running start, because? I am the fan of ‘time is a factor’. And I do not believe a good answer for seating a bullet out to the lands is: Because.
Anyhow, I want my bullets moving when they hit the lands, I am the fan of bullet jump.
F. Guffey
I am the fan of the jump start, I want my bullets to have a running start, because? I am the fan of ‘time is a factor’. And I do not believe a good answer for seating a bullet out to the lands is: Because.
Anyhow, I want my bullets moving when they hit the lands, I am the fan of bullet jump.
F. Guffey
Turbulent Turtle
F-TR competitor
Re: to jump or jam to the lans
The word is land as in lands and grooves. LAN is an acronym for Local Area Network (in my world) and while rifles are fairly advanced with some pretty sophisticated optics and lasers and so on, I have yet to see a bullet seated to fit a lan; it's just not part of the TCP/IP protocol stack.
Seating to the lands is an interesting concept. Some bullets are designed to be seated into the lands and these are usually of a VLD design, with a more secant ogive. It also depends on the agle of the lands. If you have say a 1 degree 30 second angle with a VLD design, I think you should be good to go. If you have a more aggressive angle, say 3 degrees and a tangent ogive, this could lead to a pressure spike at ignition time. It's best to give non-VLD bullets a little space to start moving before they engrave into the lands.
The other fun part of jamming a bullet into the lands is what happens if you need to extract the cartridge before firing it. Better point up or have a vacuum cleaner handy.
As was already stated, the magazine (not clip, unles it's a Garand) will be the deciding factor in other than a single shot. Also Berger has a very nice article on finding the proper seating depth and surprise, surprise, it's not always in or nead the lands, even for a VLD.
The word is land as in lands and grooves. LAN is an acronym for Local Area Network (in my world) and while rifles are fairly advanced with some pretty sophisticated optics and lasers and so on, I have yet to see a bullet seated to fit a lan; it's just not part of the TCP/IP protocol stack.
Seating to the lands is an interesting concept. Some bullets are designed to be seated into the lands and these are usually of a VLD design, with a more secant ogive. It also depends on the agle of the lands. If you have say a 1 degree 30 second angle with a VLD design, I think you should be good to go. If you have a more aggressive angle, say 3 degrees and a tangent ogive, this could lead to a pressure spike at ignition time. It's best to give non-VLD bullets a little space to start moving before they engrave into the lands.
The other fun part of jamming a bullet into the lands is what happens if you need to extract the cartridge before firing it. Better point up or have a vacuum cleaner handy.
As was already stated, the magazine (not clip, unles it's a Garand) will be the deciding factor in other than a single shot. Also Berger has a very nice article on finding the proper seating depth and surprise, surprise, it's not always in or nead the lands, even for a VLD.
Re: to jump or jam to the lans
The real answer will always be what the rifle/bullet combination works. I have one rifle that likes a minimal jump and the other shoots huge groups when the bullet gets closer to the lands. For some reason my best shooting rifle can make small ragged holes at 100 yards while the bullet "gets a head start" of .150" before it hits rifling.
The real answer will always be what the rifle/bullet combination works. I have one rifle that likes a minimal jump and the other shoots huge groups when the bullet gets closer to the lands. For some reason my best shooting rifle can make small ragged holes at 100 yards while the bullet "gets a head start" of .150" before it hits rifling.
fishbone said:
No, it's true. The rifle is a Rem 700 5-R Milspec. It shoots best with a COAL of 2.800 and measuring with a gauge the distance to the beginning of the rifling is 2.950.
It's no Benchrest rifle but it can punch groups as small as .140 @100 yards. It's more of a Tactical Rifle and fun to shoot.
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