300 Win Mag reloading
I'm going to reload for my son-inlaw. I'd like to just reneck size the shell.Is there anything wrong with my way of thinking?
Psalm 109:8
Psalm 109:8
0
-
might wanna try posting this in the reloading forum...
sorry i can be of no other assistance.0 -
Hey victor, you want to set up your dies using one of his fired cases.
You also want to be sure that the rounds you make are only used in his gun.
When you adjust the sizing die down on the neck of the case, go really slow so you don't push the shoulder back further than the chamber line from the first firing.
I assume he shoots a bolt-action; otherwise you may have trouble if it's a BAR or other gas gun.
If you have a chamber sizer like the chamber-all; you can gauge the O.A.L. for bullet seating purposes, but don't load 'em so long that they won't feed from the mag.
Also, be aware of the area just forward of the belt; if that area gets shiny or "ringed", you may want to throw it and start with newer brass.
"Qui non est hodie cras minus aptus erit" --OVID0 -
Neck sizing with a neck die is no problem at all, but if your using a full length sizer die and just trying to neck size them you may get into a growing problem.
When the full length sizer is not full length sizing the case it can make it stretch out and it can then be to long to fit the chamber.
You need to keep that headspace under control at all times, and it's hard to do using a full length die to partial size only.
Gun control is hitting what your aiming at.0 -
the full length die can not pull the shoulder forward enough to make it unchamberable (is that a word?[:)]). In Partial Full Length sizing, we actually use a FL die and adjust it only down far enough to size half to 3/4's of the neck. At some point while you are adjusting down to the full length sizing setting, the body of the die will push in on the expansion ring at the base of the case, but will NOT be down far enough to contact the shoulder yet. At this point, the shoulder will be pulled forward due to the case being sized at the bottom of the body and the brass has to "flow" somewhere. This will result in a tighter fitting case in the chamber due to a bit of pressure being needed to close the bolt as the case shoulder makes contact firmly with the chamber shoulder. This will hold the round "in compression" and also will help to center it in the chamber and does not overwork the brass as much as FL sizing. If you have the stoney point headspace tool, you can keep measuring the datum line on the shoulder until it increases in length by .002"-.003" and at that point, it is PFL sized.
Once you adjust the die down past this point, the die body will make contact with the case shoulder and actually push it backwards and resize more of the case body than just the expansion ring. This is the point at which you have FULL length resized that case. Many BR shooters are going back to PFL sizing as an alternative to neck sizing as they feel it has many merits for accuracy. I have been experimenting with some rifles that I load for this way to see if accuracy is in fact better.
why chase the game when the bullet can get em from here?....
Got Balistics?0 -
For all of my big game hunting rifles I full length re-size rather than just neck size. I might be paranoid but I would hate to have any kind of problem chambering a follow up shot. Just my opinion but neck sizing is great for punching paper but I don't do it for my hunting loads. For me the more things I can eliminate that may go wrong just eases my mind that much more so I am totally confident when I am in a hunting situation. Just another point of view.[;)] 0 -
Thanks for the replys.
Psalm 109:80 -
snellstrom,..the best thing about PFL sizing is that it allows positive feeding. The expansion ring IS sized, and the neck is sized for the next pill. The .002"-.003" of shoulder compression will feel very minimal, but will NOT stop you in any hunting situation[;)] The expansion ring around the head and work hardened brass that has been NK sized and fired many times is what leads to that stiff chambering, and the redding body die was made just for this. In a dangerous game rifle I would always FL resize to ensure my safety, but PFL in a hunting rifle will work without a jamm. [8D] and IF a little better accuracy results, then [:p] if not,..then just do what works best[:D] I have tried the PFL sizing because it offers a midland between NK sizing and FL sizing. The theory of being "held in compression" makes some sense to me,..hence my experimentation.
why chase the game when the bullet can get em from here?....
Got Balistics?0 -
All I know is if I try to partial size my 6mm Ackley for example they get really hard to chamber if I don't get it close enough to push the shoulder back a tiny bit. Seeing that the brass must go somewhere I'm assuming it grows a little in length.
Think about a tube of capped toothpaste when you squeeze it in the middle, it can't get out but it still goes someplace.
The only time I use a Redding body die is when the base gets out of hand.
Normally I neck size every thing I shoot with a Wilson Bushing die until they grow to the point that they chamber hard, and thats usually because I lean on them a little to much.
Gun control is hitting what your aiming at.0 -
bruce,..that feel you get when chambering a PFL sized case is the shoulder "crush"[8D] The PFL sizing actually keeps the case tight in the chamber by extending the length from casehead to datum line by a few .001"s. As long as your cases are trimmed well below chamber size, the primer pockets will be long gone before you have to worry about neck length.[^]
why chase the game when the bullet can get em from here?....
Got Balistics?0
Please sign in to leave a comment.
Comments
9 comments