A question a friend asked me

D

D Crockett

Member
just to let everyone know I did not have a answer for my friend . so here is the question he asked me "why can't you use large pistol primers in a large rifle round "also my friend does not reload he just likes to shoot up what I make at the range D Crockett
 
Brad

Brad

Benevolent Overlord and site owner
Staff member
Cup hardness/thickness. Also, large pistol primers are shorter than large rifle primers so the pistol primer is deep seated and may cause issues if firing pin isn’t long enough for a good strike.

Large pistol can, and have, been used in low to medium pressure rifle loads. Something like a full load in an 06, not gonna be good.
 
Bret4207

Bret4207

At the casting bench in the sky. RIP Bret.
Yup, you "can", it's just that there are minor differences that you need to be aware of.
 
Michael

Michael

Active Member. Uh/What
When it comes to black powder cartridges using -black powder- only - the use of large pistol primers is common place.
 
S

shuz

Active Member
Due to the current primer shortage, I decided to try Rem 2-1/2's in my .250 Savage with a 100g cast Saeco 100g bullet. I was pleased that the load shot an approximate 1" group of 5 shots at 100 yds! Besides, the boolits were powder coated and were without gas checks applied
I gotta try this again to see if it was a fluke.
I believe that this load is not high pressure since I'm using Reloder 7,
at 15.5g and the chronograph showed 1650fps when last clocked with Rem 9-1/2's
 
Ben

Ben

Moderator
Staff member
For me, in centerfire cast rifle loads, I will often times use
a large pistol primer. I seat it level with the case. I won't exceed
30,000 psi. 99% of the time 25,000 or lower psi. with a pistol primer. I've never had a problem doing this.

Ben
 
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johnnyjr

johnnyjr

Well-Known Member
I once had a conversation with Paul Matthews about lpp in the 45-70 with black powder. He mentioned using aluminum foil disc under the large pistol primers. I tried this. I brings them up to the correct depth. It's times consuming,but it works. I was always going to try a paper punch to make the disc,but never did.. And I do not remember poking a hole in the foil. The primer just shot right thru it.. I might try this again.
 
Tom

Tom

Well-Known Member
johnnyjr said:
I once had a conversation with Paul Matthews about lpp in the 45-70 with black powder. He mentioned using aluminum foil disc under the large pistol primers. I tried this. I brings them up to the correct depth. It's times consuming,but it works. I was always going to try a paper punch to make the disc,but never did.. And I do not remember poking a hole in the foil. The primer just shot right thru it.. I might try this again.
Click to expand...
No real knowledge on the aluminum, but I understand it burns hot and ignites relatively easy when it's finely powdered. I'd think the primer would get a boost from the burning aluminum.
 
JonB

JonB

Halcyon member
johnnyjr said:
I once had a conversation with Paul Matthews about lpp in the 45-70 with black powder. He mentioned using aluminum foil disc under the large pistol primers. I tried this. I brings them up to the correct depth. It's times consuming,but it works. I was always going to try a paper punch to make the disc,but never did.. And I do not remember poking a hole in the foil. The primer just shot right thru it.. I might try this again.
Click to expand...
Seems like it's be easy to poke a hole in the alum foil from inside, after the primer is seated.
 
Tomme boy

Tomme boy

Well-Known Member
if you are shooting bp then go for whatever primer works for you. You will never pop a lpp in bp loads
 
Michael

Michael

Active Member. Uh/What
No need to punch a hole in the foil or use a hole punch to make them. Simply cut into strips about 1/4" wide, slip in over primer before the case is place in the shell holder, seat primer as usual, the primer will cookie cut the wad be it paper or Al.

The force from the is more than than sufficient to blow through the wad. If a primer has enough force to push a slug out of pistol case when a charge is missed, a paper or AL wad offers very little in terms of any resistance.
 
RBHarter

RBHarter

West Central AR
Powdered aluminum releases hydrogen gas when exposed to water . It's added to trinitrotoluene to enhance it's energy via flash off of the released hydrogen.

Don't ask .
 
RBHarter

RBHarter

West Central AR
Pretty good chance if those were anywhere near the World's largest NAD I had a hand in getting them there from 9/95-6/18 .
 
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