Foster Case trimmer???
- Thread starter Scalloper
- Start date
OldTurtle
Moderator - Deceased
The Forsters used operate with a series of collets,,,It's possible that you may need a longer one for the .45 ACP...Needing to trim the .45 is very unusual since the round headspaces on the case rim and there is not much ability for the case to lengthen when fired..I'm not sure if the cartridge was fired in a .45 ACP revolver using the moon clips though...
Forster's Customer service has always been pretty helpful to me,,You might want to give them a call with the problem and they may have a good answer for you...
Forster's Customer service has always been pretty helpful to me,,You might want to give them a call with the problem and they may have a good answer for you...
spotstalkshoot
Well-known member
Are you making some gap length brass, I been thinking of using some 45 acp cut down for practice ammo for my 45 gap XD. Have not tried to cut anything that short with my rcbs now Iam wondering if I can.
CatShooter
New member
Originally Posted By: ScalloperI was going to trim some 45 acp shells yesterday but my Foster Case trimmer will not extend quite far enough to reach the shell. Is there another cutter that I need to buy?
You need the small (short) base - go to:
www.forsterproducts.com and poke around.
You can call them, they are nice people.
You need the small (short) base - go to:
www.forsterproducts.com and poke around.
You can call them, they are nice people.
CatShooter
New member
Originally Posted By: ScalloperNo, just cutting it all uniform to .895
By the way, NOBODY trims auto pistol brass. Just load it an' shoot it!
By the way, NOBODY trims auto pistol brass. Just load it an' shoot it!
CatShooter
New member
Originally Posted By: ScalloperNo, just cutting it all uniform to .895
OK... here's the skinny on trimming handgun brass.
Revolvers - rimmed revolver cases headspace on the rim, so it makes no difference if some are shorter than others.
With low recoiling revolvers, it is not important, but some guys do trim to make ROLL crimping more uniform - but they don't roll crimp very deep.
On heavy recoiling revolver calibres like the 38 special (in light weight frames like the S&W "J frames"), and all 357 Mags and anything 40 cal and larger, they trim so the crimp die (a separate operation) can make a deep, uniform crimp - so the damm bullets don't slip out of the case mouths on recoil, and freeze the cylinder.
The case length needs to be the same so the roll crimp will be the same.
With auto pistols, when you trim, you INCREASE the headspace, which softens the firing pin strike, and increases the chance of a misfire.
Auto pistol cartridges headspace on the mouth, and get a TAPER crimp. The taper crimp is not case length dependent - if you have a bunch of auto cases that are different, the taper crimp will do them all the same.
So, trim your revolver cases for heavy recoiling handguns, and don't do it in your auto pistols.
OK... here's the skinny on trimming handgun brass.
Revolvers - rimmed revolver cases headspace on the rim, so it makes no difference if some are shorter than others.
With low recoiling revolvers, it is not important, but some guys do trim to make ROLL crimping more uniform - but they don't roll crimp very deep.
On heavy recoiling revolver calibres like the 38 special (in light weight frames like the S&W "J frames"), and all 357 Mags and anything 40 cal and larger, they trim so the crimp die (a separate operation) can make a deep, uniform crimp - so the damm bullets don't slip out of the case mouths on recoil, and freeze the cylinder.
The case length needs to be the same so the roll crimp will be the same.
With auto pistols, when you trim, you INCREASE the headspace, which softens the firing pin strike, and increases the chance of a misfire.
Auto pistol cartridges headspace on the mouth, and get a TAPER crimp. The taper crimp is not case length dependent - if you have a bunch of auto cases that are different, the taper crimp will do them all the same.
So, trim your revolver cases for heavy recoiling handguns, and don't do it in your auto pistols.