Pistol Primers

[Semtav]

Altho I've always shot pistol primers in my 40-82 because it came with brass that was swaged for pistol primers and they shot real well, I've never tested them side by side with various other primers.

this week I thought I'd try a few in my 45-90 so I threw 4 together to check against my other primers. 3 of the 4 had no vertical and the fourth was touching the bottom of the other.

Yesterday I repeated the test with 10 against a couple batches of rifle primers. Almost identical results.

the first 6 had maybe a quarter bullet vertical, 7th was a called low, 8th was back up with the rest and 9 and 10 were about 1 bullet high.

Very impressive vertical. horizontal was nothing to write home about.

One thing I did different with the pistol primers was to seat a paper wad under the primer to take up a little space for the short primer.

I will be testing these again, putting a paper wad under the rifle primers too to see if that helps with the vertical or if its just the pistol primers doing it.

Load was 90 gr Swiss 1.5
BR-2, GM210M and GM155M primers

One load of 95 gr Swiss 1F was also tested with GM210M primers. it will get a primer test too.

[Don McDowell]

Good doins Semtav, keep the info coming on your tests.

[Semtav]

Round 3
10 shot groups

#1 95 gr Swiss FG GM210M changed to 16-1 alloy

#2 90 gr Swiss 1.5 FG GM155M changed to 16-1 alloy, over primer wad

#3 #1 with overprimer wad

Group #1 shot a very solid 2"H X 1 3/4 V even group. Last shell had to be cammed in and shot 1/2 inch high

Group #2 shot a very solid 3/4" H X 1/2" V thru 4 shots. Then the wheels fell off. shot 5 was 3" right (no way I jerked that bad) and high, shot 6 was 3" left shot 7 was half way back to the group and 8 was back in the group with 9 and 10 being just a touch out of the group at 10 o'clock.

Group 3 was a shotgun pattern and confirmed what I thought was going on.
Temp was 30 deg with spitting snow. somewhere my fouling control failed and a couple brass at shots 5-7 on the second group had curled lips. Plus leading started.

altho I was cleaning between groups, it was just a couple wet followed by a couple dry and a lube.

If I can get thru a whole group without things going south, I think these Pistol Primers will really shine.

[Lumpy Grits]

I have have hoped for a long time, that Starline would do PP runs of .45-70 and .45-90 brass.
Gary

[Kurt]

I been following your posts on the .40-82 and it sounds like a interesting cambering.
Can you tell me what the brass length is as it comes out of your chamber when fired and barrel twist your using and are you using the .40-65 sizing die for the brass.
I have one of the early Browning BPCR in .40-65 that had a bad chamber neck that looked like they used a undersized pilot when they cut the chamber so I had a throating reamer made with a 4 degree/1.5 compound lead and it cleaned up the chamber in good shape and made it a fine shooter. I would probably be foolish to lengthening out the neck farther to the 82, but the 82 is interesting.

Kurt

[Semtav]

Kurt
I run them at 2.385. I never resize them.
16 twist original Browning barrel, but I'd like to try a 14 sometime.
I quit having stretching problems with those when I went to just one .030 LDPE wad.
I'm going to have to try that with the 45-90 cases too it looks like.


(I double checked my first four hits with the pistol primers, measured .6" H X .3" V) one more and I might have framed it

[Kurt]

Ok Brian, I'm tooling up, but first Are you using the .40-65 sizing die to form your brass?

[Semtav]

Mine came sized. I do have a CH-4D 40-82 silhouette die that came with them ( Buffalo Arms 4D4082FLSIZER) so I figure that is what was used. A misconception is that the Crossno chamber is tapered from the base. Mine is not, it has .30 of straight at the base, then looks just like a 40-65 above that, so I would think a 40-65 should work as well to size them.