Accurate handloads possible, and that often leads shooters to see how benchrest shooters are reloading. How to bump size rifle brass vs. Measure the whole shebang. Kevin, The theory is that the action of the M1A/M14 is so fast that there is still pressure inside the case and barrel when the bolt unlocks and starts to the rear. I tried neck sizing with a lee collet die as well as FL sizing with the die going down the neck but not touching the shoulder, same result. Erik couldn't make it any easier to show how to set up your FL sizer for 0.
For AR15s you need to bump the shoulder of your cases. I like to use a microfiber cloth. Every chamber is different in shape, particularly around the shoulder of the case. Experience Tip: If you tighten the set screw with the collar snug against the press it might be difficult to unscrew the die the first time. CBTO (cartridge base to ogive) measurements as well for bullet seating. I dunno, my rounds always chamber, my worst rifle shoots 1 1/8 with its hunting load. Shoulder bump and neck tension both very important. | Hank's Message Board. Continue with 1/16 die adjustments until the bolt just closes and the oprod goes fully forward. Accurate full length resizing means having -.
When you are performing load development, the target will tell you if you need more/less neck tension. Cheap Tricks: How to Measure Shoulder Bump Using. Do not tighten the set screw. 005″, for enhanced reliability. Full Length versus Neck Sizing. There was a thread here somewhere a couple years ago about shoulder bump for different action types. The bolt probably will not fully close. The bullet seated long will keep the base of the case against the bolt face, and the firing will move the shoulder forward. An air compressor will greatly assist in drying the dies after cleaning. Lubricant can also build up over time in the sizing die body. If new brass is being used, there is a good chance the shoulder does not need to be bumped. Size the case, wipe lube off and repeat trying to chamber.
Open and close the bolt by hand to get the most precise measurement. Some times we can get lost in the minutia of reloading and forget the basics. ALWAYS fit perfectly. I do own a wildcat cartridge (26 macho) which uses a custom Hornady full length bushing die. 5 PRC brass, Hornady Match FL sizing die, Lee Turret Press with RCBS shellholder, Whidden Shoulder Gauge and standard calipers.
Check with the factory if you suspect this problem. Ah, that's the beauty of being the boss in your own shop. Another common cause of cartridge case denting is excessively sizing the case. Neck sizing vs Shoulder-bump sizing. The resizing die resizes the brass so it can be easily and safely chambered in your rifle and provides the correct amount of neck tension. I shoot Vapor Trail and JLK bullets and they a pretty darn consistent but you still need to check all of them.
00 UPS Hazmat Fee, $29. Your description confuses me. The writing is on the wall... Like I said, this chidt isn't rocket science. How to properly resize rifle brass. It also doesn't take a lathe to take a couple of thousandths off the top of the holder, like it does a sizing die. Now that I'm in my "Golden Years" I guess I'll have to be even more careful. As a reloader, we want to reduce trimming and prolong the negative effects of work hardening by resizing the minimum needed each time. Do not let it slam as that will partially size the case. This usually does not present enough data and is not a blind study, meaning the tester can probably tell which is which from bolt closure and can subconsciously influence the results.
Measuring the setback is very easy with a Hornady L-N-L headspace gauge, that and a slotted ammo gauge are wonderful tools for the reloader to have in his arsenal when multiple firearms in the same cartridge are being loaded for. Please excuse the lengthy post, but once you mentioned. Hopefully it was a typo and you know all this. Sometimes dies out of spec do slip out the door so I'd call Hornady at this stage also if the FL sized cases are not chambering in your M1A. But I think is is a basic Garand action that has been modified for the shorter round and a detachable magazine. Write in your die box which shellholder to use so you don't forget.
Redding offers a competition shellholder set that may help you, depending on how thick the top of your current shellholder is. I had more than a few discussions with both of them on there and a Benchrest forum on farcebook when I was on there. To maintain good neck tension should i keep using the FLS die expander or should i remove it and use the neck sizing die after neck bumping? For custom barrels, the gunsmith can make a gauge by running the chamber reamer part way into a scrap piece of barrel. Our gauge then displays the exact clearance (at the shoulder). Due to Department of Transportation restrictions, ammo, aerosols, primed hulls, lithium batteries, and some cleaning solvents are restricted from shipping by United States Postal Service. In my one rifle virgin Norma brass is 50 FPS slower than properly sized brass. I had the same kind of issue with my weatherby, the ammo used in my other rifle, wouldn't chamber, so, I had to resize the brass.. all the stuff that I had resized already needed to be done as well. You are then bumping the shoulder a maximum of 0. Measurements and bolt drop.
So, I'm kind of surprised that the collet neck die process isn't giving somewhat smaller groups, since the case through the shoulder area should be a better-fit to my chamber, and there is no expander ball being drawn through the neck. 004 to 010.. 009 is not even recommended for lever actions and semi autos. On the other hand, full length resizing must be done accurately if it's going to. Take firing spring/pin out of bolt(unless you have a 3 way safety), turn die out and then turn the die back in while feeling for the point where the bolt cams without any tension. It will also change ES/SD, no way around that. I aim for a bump that ends up being. Too much sizing...??? Saving a fired case is like having a perfect casting of. This will be your minimum value.
I never "jam" the bullet into the lands (no need to) and always start about. Powered by vBulletin® Version 4. Wasn't a for sure thing with any specific ammo in all the rifles. You must be 21 years or older to order ammunition. They mention 2 thou for shoulder bump to keep that feel of the bolt closing, what they miss is that neck tension is only about 1 thou, just enough to hold a bullet. For the M-1, remove the operating rod spring and the operating rod. 001″ increments; just order by the inside diameter desired. Everytime you try this, and you have to mave the shoulder back out, you are shortening the usable life of your brass. I've never found one to be easier to grind than the other and it takes carbide cutters to machine either.
Check your local laws before ordering. 632" (4-casings; two of each measurement). 003" for all of my loaded ammo. There are many ways to lube the brass.
Dies are shipped from the factory with a thick rust preventative and this needs to be taken off before use. The firing pin has enough force to jam the cartridge forward enough to push the shoulder back. Remeasure this resized case with your chamber gauge. As far as I know;o).