Small Rifle Primers with slowish powders?

[XTR]

For those who are shooting 260 or 6s and making brass from the 308 Lapua Palma (small primer) brass, what primers are you using?

I assume most of you are loading something in the range of H4350. Does it reliably light off with pretty much any primer or is there one out there that is "hotter" that works better? I know the work with Varget, pretty much every rifle on the line in F-TR proves that.

I've got a lot of the Tula KVB 5,56M primers. Do they work with the slower stuff? Just curious how the powders that are being used in the 6s are working with the SR primers.

edit: hmmm... I though this was in the reloading forum, my bad.

 

[Immike]

Hi Wade , I'm using fed 205 and win sr to light up h4350 in the 22br. No problems

 

[Steve Blair]

I used H4350 with Russian SRM primers in .308 Palma brass. No problems and notably low ES.

 

[dbduff]

For those who are shooting 260 or 6s and making brass from the 308 Lapua Palma (small primer) brass, what primers are you using?

I assume most of you are loading something in the range of H4350. Does it reliably light off with pretty much any primer or is there one out there that is "hotter" that works better? I know the work with Varget, pretty much every rifle on the line in F-TR proves that.

I've got a lot of the Tula KVB 5,56M primers. Do they work with the slower stuff? Just curious how the powders that are being used in the 6s are working with the SR primers.

edit: hmmm... I though this was in the reloading forum, my bad.

Using Tula and Wolf SRP in 308 Palma brass necked to 6 mm for 6 xc. Using mild loads of H4350 and got pierced primers. Same thing happened with the Russian primers in Dasher loads. Staying with CCI Br4's.
D

 

[XTR]

Pierced primers seems odd. My understanding is that the Tula/wolf Russian primers have about the thickest cups out there. I've always used the "223m" or "556" versions and I've loaded them testing up to the point of brass killing loads testing 90VLDs in a 223 and never pierced one. I've shot a whole lot of them, and gotten good results but I've never loaded them with the slow powders.

 

[Steve Blair]

Using Tula and Wolf SRP in 308 Palma brass necked to 6 mm for 6 xc. Using mild loads of H4350 and got pierced primers. Same thing happened with the Russian primers in Dasher loads. Staying with CCI Br4's.
D

What actions are you using?

 

[wolley]

Only 308 and only H4895.
I could not get consistent ignition using either flavor of Russian SRM. Switched to CCI450s and my Extreme Spreads are now single digit. I would guess the Russian primers would be even worse with a slower powder.

 

[Immike]

To get a consistent ignition on a small flash hole it must be cleared before loading the case. The back side of a tight drill bit does the job.

 

[Average joe]

For those who are shooting 260 or 6s and making brass from the 308 Lapua Palma (small primer) brass, what primers are you using?

I assume most of you are loading something in the range of H4350. Does it reliably light off with pretty much any primer or is there one out there that is "hotter" that works better? I know the work with Varget, pretty much every rifle on the line in F-TR proves that.

I've got a lot of the Tula KVB 5,56M primers. Do they work with the slower stuff? Just curious how the powders that are being used in the 6s are working with the SR primers.

edit: hmmm... I though this was in the reloading forum, my bad.

In the 6.5x47 with 4350 I moved to the cci 450's. Seems more consistent, especially in the cold. Still run some br4's with varget, but would recommend 450's with h4350, and they hold up to pressure. Just my impressions.

 

[LitLBoy]

CCi-450

 

[jsuber]

CCI 450 or Wolf SRMP. Seem to get better and more consistent accuracy with Wolf.
39 grains H4350 in 6X47 Lapua

 

[XTR]

CCI 450 or Wolf SRMP. Seem to get better and more consistent accuracy with Wolf.
39 grains H4350 in 6X47 Lapua

Thanks. I've heard that the Russian aren't as "hot" as the CCIs (less brisance is the term I've seen used) so I was curious how well they worked on the slow stuff or if I should try something else.

 

[Down South]

When i did a primer test over the chrono in 308 palma brass CCI 450s were the hottest primer i tried. The 2nd hottest primer was Fed 205M then BR4s and Wolfs. I didn't test the Remington 7.5 but heard they are hot. This was loading 43.5 gr varget under a juggernaut with each primer and shooting over the Oehler 35. Different lots of primers may have different results i would think, this is how mine played out.

 

[dbduff]

What actions are you using?

Borden in 6xc and Savage in Dasher.
D

 

[Laurie]

I ran a 308 Win primer test series last autumn using Palma brass and small primers as a follow-up to my earlier series with standard brass and LR primers. 14 models in all were tested, although one had to be abandoned mid test due to severe 'blanking'. I've one more primer to try, a Russian model that appeared in our (GB) shops too late to test before temperatures dropped with the onset of winter. I'm just about to do it and will write the results up in Target Shooter online magazine shortly.

While several standard models showed thin / weak cups with heavy cratering, there were no ignition problems at all with Viht N150 powder. I've also used reformed Palma brass in 7mm-08 without any ignition issues with two or three powders and will do so again with heavier bullets and slower burners in due course.

Where I did run into problems was with Hodgdon CFE223 'spherical' powder in chilly temperatures (40s F). Two out of 50 test cartridges failed to fire, and most of the remainder suffered very slight hangfires. It was so slight that it took me some time to grasp what was happening. I didn't feel any delay through the butt / shoulder, but could just hear the firing pin fall a fraction before the bang making it sound as if there was a rattle somewhere in the action or bolt. Without electronic earmuffs accentuating the sound I'd likely not have noticed it. The two misfires showed the primers had ignited OK when demilled but had obviously failed to ignite the charge. Examining the powder granules showed no signs I could find of partial ignition or scorching. The little balls looked in perfect condition, but I dumped the 90gn or so of powder anyway in case it had been damaged in some way. The same combinations were tested in the same session loaded in standard Lapua LRP brass and (unsurprisingly) functioned perfectly.

 

[XTR]

Thanks Laurie. I had some of the "hang fires" seemingly very similar to what you describe with small primer brass and Alliant 2000 MR, another spherical type powder. In the manner that you describe, it took me a couple of them to realize what was happening.

 

[X-Caveman]

This just happened to me, too. It was like shooting a flint lock. I was using a Tula 5.56 "Mag" primer in 6.5x47L with H335 behind 85gr Sierras. Every one of them that went off had a delayed ignition. 4 of the approx 20 didn't fire at all. Upon breaking them down, some of the powder was lighter in color and clumped together. This was a 70deg + day in TX. I have my second attempt loaded up. This time it's CFE223 (significantly more of it) and CCI450s. Hearing Laurie's troubles with CFE223 concerns me. I hope they light cleanly.

 

[Mozella]

I too have had click-bang style hang fires with CFE 223 in my .223 rifles using conventional primers; about 5% malfunction rate. Ignition is improved with CCI 450 magnum primers.