Neck Sizing vs. Full Length Sizing.. Does it make a difference? 

I ran a test of my own for my R700 rifle in .308 and it prefers FLS. I tried it with hunting grade 150grain Core-Lokt and match grade 175 grain SMK and TMK bullets in their respective powder weights that could get the most accurate for that rifle. For my particular rifle, it just preferred full length resizing. Buddy of mine, his rifle also in .308 preferred neck sizing and that is what he loads.

Great video. I do both FLS and neck sizing. I really like neck sizing for my sons 243 win, wifes 280 Rem, and my 7mm Rem Mag when loading practice rounds. The reloading process is bit faster for me when neck sizing allowing me to skip the lube process required for FLS. Hunting cases are FLS for reliability.

Great video especially as I have the same gun as what you are shooting although you are shooting handloads and I have been shooting factory ammo which would I am sure give the edge to you and the fact that I am not nearly as experienced a shooter as you. My gun really seems to like the Sierra Matchking's in the 69 gr variety. I really enjoy your videos so keep up the good work.

The rifle will tell you what to do with each piece of brass. Have to do it with each one. Take a fired case, see if it easily rechambers. If so, neck size only 0.002 smaller than the loaded round and trim if need be (in batches of course). See if it easily rechambers again. If so, load it, test fit in the chamber. 100% of the time it does for me. The problem with FL sizing, in my experience, is if you take a fired case that easily rechambers anyway, it already has clearance. Then you measure it and bump the shoulder another 2 or 3 thousands and you know have a total clearance of 4 to 5 or sometimes even more after you FL size. Now you may run into case head separation for overworking the brass. I test all fired cases as noted and sort accordingly. Almost always I end up with 80+% that I only have to neck size. Especially if it's a less than max charged round and in the first 2-3 firings. Often, after the 3rd loading I'll have to FL size. I just keep the cases organized accordingly. For me, I only hunt. No competition. Thus, when shooting at game at what most consider reasonable distances (I read 350 yards and under a lot), then a rifle ammo combo that will group even 4-5" at that distance is fine. I personally prefer much tighter groups but when it comes to handloading, I absolutely hate going through the process of FL sizing. Don't like to lube cases and don't like to clean the lube off. Neck sizing works to my satisfaction and it's never failed me

I accidentally stuck a neck sized case in a semi auto once. Only full length size everything now cause stuff happens. From my years of doing both though. The quality of the equipment and supplies as well as the good old attention to detail makes more of a difference than anything.

I full length size all my brass now back to sammi specs because I shoot them both out of a bolt action an a AR10. Get yourself a Hornady Headspace Bushing kit is a must. No more jams in my AR10 since I've been using it. An a Hornady Bullet Comparator kit is good to have too.

...watched a few neck vs FL resizing and there's rarely that much difference in group size. I currently neck size for bolt guns using fireformed factory brass and accuracy is excellent and there's less risk of overworking the brass or bullets stuck in dies. However, if you reload from new brass you or if you shoot a calibre where shoulders are pushed out, you will need to FL resize. F class open shooters are looking for optimal precision at almost any cost, so they have a different approach to everything - how many of us are running the same spec of rifle / scope / calibre as they do?

I used to neck size only, it ended up galling up my bolt lugs. Now I do case shoulder bumping. Much better for thr gun.

Neck sizing will extend your case life. When it won't chamber, full length size and shoulder bump a couple thousands back. Annealing will help also..

I`ve done it both ways in several different rifles i have. I stopped going down that rabbit hole a long time ago. Full length sizing has always seem to work best for me.

Holy crap, 3 shots in a row on that second group literally went through the same hole without enlarging it- never seen that before. Also, what's up with that singular mag dump? Pissed off neighbor?

Only in case it's a lever, semi, or in CASE it's an A.R.,.. ALWAYS use a small base die- it will be stamped- with the caliber and the initials A.R. on it.

I neck size 9 times then full size on the 10th reload. I use a Lee Collet neck sizer which has a mandrel. I do not use Neck Bushings anymore as I found the mandrel is more accurate and less work hardening for the brass. To-Date I have reloaded my Lepus 223 brass 56 times and have not had to throw one case out using above formula and 0 annealing.

I've done both . I'll neck size to save ware & tear on my brass & if the cases are Nickle plated .

The F-class champs ALL use full size in a body die. The trick is that there are various degrees of full sizing and not back to SAAMI specs. Redding make a set of shell holders from -10 thou -8 thou, -6 thou, -4 thou down to -2 thou so you can try them all and discover whice shell holder gives you a 2 thou bump at the shoulder end. Here is a video that explains it a bit more. Noel ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ldtbsym650k.html

I run a ton of gas guns, and I'll just say I full length size. With small base dies, and you can't beat Lapua brass. a lot of it depends on your chamber and how much the brass grows. Anneal the brass full length size it avoid all the problems

I neck size my 223 for a tikka T3x has excellent accuracy do all my loading with Wilson dies.

Full length is the only way for me !

I shoulder bump my brass 2 thousands in my full length sizing dye and get half inch groups when I do my job rite

It’s probably worth it for a bench rest/ long range shooter, but not much need for it when it comes to putting meat on the table. Just depends on your needs and wants. Got a lot of respect for the folks that have the time and components for the bench rest or long rang competitions. I would if I could lol.

I've also done both I have a TC contender In 223 that likes neck sizing. But I will say after I found a great load I didn't try anything else. That handgun was rough on the prairie dogs when I lived in Colorado, what a blast. My Elk gun was a Roger M77 mark II stainless in 300WM That round, in that particular chamber was much harder on brass when I full sized it. so I would neck size it ones, but if I did it twice it was way too tight for hunting use. Lol A dumb rookie mistake I made was developing a Elk round that shot real good from the bench, while single feeding. Guess what, I get up to Elk camp and go to load my Special Elk pills in the box magazine and yes they were to long to fit!😂🤣 Luckily it only took one shot. That Ruger was bored pretty deep 😂 Once again thanks for the video, always enjoyable

Full length

I saw a video recently and all of the professional F-Class shooters always full size their brass. They were asked that specific question. "Neck Size or Full Size?". About a dozen or more were asked and they all said "Full Size". Just more info for your toolbox.

2 5 shot groups are better than 1, but still statistically insignificant.

Really confused how that action works

nice if we could hear you