The only purpose of a taper crimp is to remove the mouth flare on the casing. You can not produce an effective crimp with a taper crimp die. If you don't believe me take a fired 9mm or 45cap and try...
Type: Posts; User: Motor
The only purpose of a taper crimp is to remove the mouth flare on the casing. You can not produce an effective crimp with a taper crimp die. If you don't believe me take a fired 9mm or 45cap and try...
I just changed the free float handguard on this and didn't even find the caliber marked on it let alone the twist.
It's a Hardened Arms upper. From what I've seen on line I believe its 1:8
...
I honestly don't know what the twist rate is. I got the upper from my brother. I'll try to find out. After I get settled on a load I'll post photos and details.
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Finally got back to testing. Sizing the boolits .309" has resolved all of the chambering issues.
Now it's on load development, again. It shot a 5 shot group at 100 yards today that has an extreme...
If you have a weak crimp the primer alone could be pushing the bullet forward as the powder begins to burn. That is a fairly small casing it wouldn't take much pressure to move the bullet.
popper,
It's a RCBS min chamber gauge. Tonight while loading some test rounds I found another contributing factor.
The brass I made from PPU headstamp has at least .002" more neck wall thickness....
Yes crimping with FCD in separate operation. Only found the ring after firing not after seating. I also noticed this load was VERY compressed. I wonder if that wasn't making the case swell just a tad...
I recieved my order today which included a case gauge and .309" bullet size die.
My casings fit the case gauge easily.
My dummy round with .311" boolit gets snug just before going all the way in....
I've already done everything you suggested except size a loaded round which you should never do because if you do the neck sizing portion of the die will swedge the bullet down within the case neck. ...
There's now reason to reduce the OAL. As the photo clearly shows the interference is at the neck / shoulder junction.
Plus as popper pointed out the chamber neck is .335" My necks are .333" plus...
It's crimped with a Lee FCD and the neck is the same diameter or a little smaller at the mouth.
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Yes. Maximum OAL is 1.860" I load them
.010" to .015" off the lands. 283636
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Ah. Figured it out. The photo posting that is. 283634
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The boolit is a 168 cast bullet. There's as much of it inside the case body as in the neck. [emoji6]
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popper. You are absolutely correct. You dimensions plus your comment is right on. I tried to post a photo of the dummy round with the ring showing through the sharpie at the neck/shoulder junction...
I've been working on a cast boolit load for my 300 BO. Typically I size all my cast boolits for 308 groove diameter barrels .311" and it's always worked great.
It seems with this cartridge the...
Forum: Coatings and Alternatives
I'm finding 12 BHN is enough. That includes a 500 S&W load that produces about 32k psi according to the Lyman cast bullet manual. That's without a gas check too and no spraying in the muzzle brake...
Rule of thumb when going from a standard primer to a magnum primer in a rifle load such as .308 Win for example is to back off 1 or 2 grains and work back up if needed. From my own personal...
Forum: Leverguns
I wish Marlin would make a 1895 or similar in .500 S&W
Motor
Forum: Coatings and Alternatives
This is also what I used. It's very nasty stuff but it works quickly. I rinse them with hot water with dish detergent then again with hot water alone. I haven't seen any lube stand up to this stuff...
Forum: Muzzleloading.
I've been busy with other things. But never stopped casting and shooting. I'll get ahold of you. :)
Motor
Forum: Muzzleloading.
What are .440 round balls worth these days. They have spure marks so they are probably home cast. They also have light oxidation. Thanks
Motor
Forum: Frequently Asked Questions
I'm really sorry but its been a while since I have been on the forum. What is the rules about offering stuff for sale is specific topic threads? Thanks.
Motor
Forum: Hunting with CB's
I don't know if already mentioned but I powder coat my cast boolits. I have found that with PC I can use a softer alloy. I still use the gas check as well. Judging from my experience I'd say you...
Forum: Hunting with CB's
The only thing that will assure a drop dead shot is to hit something that makes it impossible for the animal not to move.
I have seen many deer run a hundred yards that had their hearts or lungs...
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |