|
Joined: Feb 2001
Posts: 7,978
Campfire Outfitter
|
OP
Campfire Outfitter
Joined: Feb 2001
Posts: 7,978 |
They seem to be sensitive to seating depth IME what works in your loads?
Bought some Nosler Factory 300 WSM, 180 gr AB and noticed they were seated very deep, my 300 WSM is very fussy. Know most 300 WSM,s do not have much throat how far do you seat NAB off lands for accuracy?
Nosler Ballistic Tips seem less fussy on seating depth.
kk alaska
Alaska 7 months of winter then 5 months of tourists
|
|
|
|
Joined: Dec 2004
Posts: 5,116 Likes: 1
Campfire Tracker
|
Campfire Tracker
Joined: Dec 2004
Posts: 5,116 Likes: 1 |
I haven't noticed any difference between Solid Base, Ballistic Tip, Partition or Accubond in that respect. I usually start out with .030" jump and most often don't need to change from that. I use mostly Nosler bullets. jmho Tim
"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." Albert Einstein
At Khe Sanh a sign read "For those who fight for it, life has a flavor the protected never knew".
|
|
|
|
Joined: Feb 2011
Posts: 11,273
Campfire Outfitter
|
Campfire Outfitter
Joined: Feb 2011
Posts: 11,273 |
I'm jumping them a damn mile in my 270 WSM Montana and they do about 1/2".
|
|
|
|
Joined: Sep 2005
Posts: 7,132
Campfire Tracker
|
Campfire Tracker
Joined: Sep 2005
Posts: 7,132 |
I always start with a kiss or .003 off, only one way to go if that doesn't work. More times than not, that depth is where good accuracy comes. That said, some pipes do well with many diff depths.
|
|
|
|
Joined: Dec 2004
Posts: 17,247
Campfire Ranger
|
Campfire Ranger
Joined: Dec 2004
Posts: 17,247 |
I always start with a kiss or .003 off, only one way to go if that doesn't work. More times than not, that depth is where good accuracy comes. That said, some pipes do well with many diff depths. +1 on the kiss or .0030" bit, although "at mag box length" is a commonly used option too. I sometimes have no clue about the jump and seat them out as far as feed/functioning will allow....
Now with even more aplomb
|
|
|
|
Joined: Oct 2009
Posts: 673
Campfire Regular
|
Campfire Regular
Joined: Oct 2009
Posts: 673 |
I'm .010 off the lands in 1 7mm and .2 off in another and .35 off in a 300wm but have no option there because of the magazine.
I agree with Reloader7RM start long and work it back.
Huntinut
"If it's the truth it ain't braggin" Will Rogers
|
|
|
|
Joined: Jun 2006
Posts: 10,084
Campfire Outfitter
|
Campfire Outfitter
Joined: Jun 2006
Posts: 10,084 |
In my 30-06s and 338wm they are do not seem at all sensitive to seating depth.
Odd
Snake
That which does not kill us makes us stronger
Friedrich Nietzsche
|
|
|
|
Joined: Mar 2003
Posts: 17,179
Campfire Ranger
|
Campfire Ranger
Joined: Mar 2003
Posts: 17,179 |
In my 300 Win. mag. I had to seat the A/B deeper than the Nosler B/T.
Randy NRA Patriot Life Benefactor
|
|
|
|
Joined: Mar 2012
Posts: 246
Campfire Member
|
Campfire Member
Joined: Mar 2012
Posts: 246 |
Im with you temmi, my .270 shows no real big difference in seating but I do seat at 3.34 oal.
|
|
|
|
Joined: Apr 2011
Posts: 15,319 Likes: 3
Campfire Ranger
|
Campfire Ranger
Joined: Apr 2011
Posts: 15,319 Likes: 3 |
I'm jumping them a damn mile in my 270 WSM Montana and they do about 1/2". Same here, between .050 and .1 seems to work for most of my AB loads. I usually start out a little closer, but end up backing up to make them consistent.
Semper Fi
|
|
|
|
Joined: Dec 2004
Posts: 5,116 Likes: 1
Campfire Tracker
|
Campfire Tracker
Joined: Dec 2004
Posts: 5,116 Likes: 1 |
JMHO here, but I believe that some bullet jump (vs touching lands) smooths out the pressure curve spike and also allows me to get a little more velocity than the jam fit. Again, jmho Tim
"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." Albert Einstein
At Khe Sanh a sign read "For those who fight for it, life has a flavor the protected never knew".
|
|
|
|
Joined: Nov 2009
Posts: 3,927
Campfire Tracker
|
Campfire Tracker
Joined: Nov 2009
Posts: 3,927 |
I start at .030" off for just about any bullet, AB or otherwise. Then I sneak in to .020" off, if needed.
Keep your gun-hand ready and your eyes peeled.
|
|
|
|
Joined: Nov 2009
Posts: 3,927
Campfire Tracker
|
Campfire Tracker
Joined: Nov 2009
Posts: 3,927 |
I start at .030" off for just about any bullet, AB or otherwise. Then I sneak in to .020" off, if needed.
Keep your gun-hand ready and your eyes peeled.
|
|
|
|
Joined: Apr 2011
Posts: 12,172 Likes: 5
Campfire Outfitter
|
Campfire Outfitter
Joined: Apr 2011
Posts: 12,172 Likes: 5 |
+1 on the kiss or .0030" bit, although "at mag box length" is a commonly used option too. I sometimes have no clue about the jump and seat them out as far as feed/functioning will allow.... +1 on the mag box length. My .300WM likes the 200gr NAB's at 3.625" which is the max length in the HS Precision DBM that they feed and cycle smoothly. And that is still short of the lands by more than 0.030"...
|
|
|
|
Joined: Sep 2005
Posts: 4,285
Campfire Tracker
|
Campfire Tracker
Joined: Sep 2005
Posts: 4,285 |
I always start about .030" off and work in and out in .010". My most recent success was .010" off with the 130 gr in 6.5x47 Lapua.
Alan
|
|
|
|
Joined: May 2008
Posts: 16,540
Campfire Ranger
|
Campfire Ranger
Joined: May 2008
Posts: 16,540 |
I just had my .300WSM barrel rechambered so I can now kiss at mag length with the 168 Amax. I agree with the folks who start with a kiss and work back if need be. It seldom does need to be deeper IME.
Thanks Dustylongshot (Earl)!!
The Chosin Few November to December 1950, Korea. I'm not one of the Chosin Few but no more remarkable group of Americans ever existed.
|
|
|
|
636 members (1minute, 160user, 12344mag, 219DW, 219 Wasp, 1moredeer, 68 invisible),
2,812
guests, and
1,186
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums81
Topics1,192,851
Posts18,497,013
Members73,979
|
Most Online11,491 Jul 7th, 2023
|
|
|
|