Negative effects of 308 lapua PALMA brass

[Hengehold]

has anyone experienced negative results from the use of small primers instead of large primers in 308 with heavy bullets (175gr or heavier)?

-Trevor

 

[Chappy]

Nope. I run them with 185 Juggs and have no problem with ignition or accuracy.

 

[CJ6]

I don't think bullet weight is an issue(I've run 208s-210s with'em). You may have some issues @ 20 below with "some" ball powders though.

 

[Sheldon N]

I've noticed significant gloating problems from people using the Lapua small primer rifle brass.

 

[Keith Glasscock]

You do have to redo your powder charge. From what I've been told by friends, the powder charge has to go up. Also, the reloading manual is no longer valid - treat it like a wildcat cartridge.

 

[dbduff]

Not trying to steal thread, but would increasing charges for Lapua 308 Palma reformed to 6xc still hold true?
D

 

[Steve Blair]

has anyone experienced negative results from the use of small primers instead of large primers in 308 with heavy bullets (175gr or heavier)?
-Trevor

Trevor, I've shot 230 Hybrids in Palma cases with Russian SRM, CCI 450 and Rem 7½ BR. Low ES, fine accuracy, ~.5 grain more capacity and much better pressure tolerance. What's not to like?

 

[Hengehold]

All good stuff guys. Thanks for the feed back.
-T

 

[Hengehold]

Trevor, I've shot 230 Hybrids in Palma cases with Russian SRM, CCI 450 and Rem 7½ BR. Low ES, fine accuracy, ~.5 grain more capacity and much better pressure tolerance. What's not to like?

Wow, 230s? What velocity do you shoot those at?

 

[Steve Blair]

Wow, 230s? What velocity do you shoot those at?

46.0 H4350 in a fairly heavily compressed load produced 2460 fps from 30". When developing the load, I used a forearm sled and front rest and had no problem shooting 1/4 MOA. I never could find a way to manage the recoil and torque using a bipod at F-TR weight. You might have better results in sling. A 9" twist barrel and .280" freebore is about optimum.

 

[SWRichmond]

Only problem I have had has been some new brass with short headspace, so short they would not fire. They dropped very far into a Wilson max cartridge gauge. Other than that I love em.

 

[rmr]

I've heard rumors of ignition issues at cold temps.... ~45degrees and below. I have not experienced this personally. does anyone have any firsthand knowledge?

 

[K redden]

I've heard rumors of ignition issues at cold temps.... ~45degrees and below. I have not experienced this personally. does anyone have any firsthand knowledge?

Just FWIW. A little off subject but I shoot a dasher and 6 br. Shoot them both at 0 deg to - 40 deg quite often. Never had a problem with cci 450s or br4s.

 

[Down South]

I've heard rumors of ignition issues at cold temps.... ~45degrees and below. I have not experienced this personally. does anyone have any firsthand knowledge?

Most of the matches i shoot are in warmer temps but i have shot a few matches where the temps were low 30s and it still hammered without ignition issues. That was with Varget & H4895 using 200 hybrids in Palma brass.

 

[alphapygmy]

Just out this morning fireforming Palma brass for my 260AI. CCI 450, 37 degrees and no problems.

 

[scott_at_vortex]

I have personally tested this multiple times from 0-15F and have never had a problem with any powders Ive tested. I have only tested extruded powders (8208,4895,Vgt). Primers used were Wolf magnums and 450's

 

[NateG]

Trevor,

If your firing pin spring is at normal power (or even better, on the strong side), there doesn't seem to be much downside to them. However, for a while, I had a weak-ish firing pin spring, and on a couple of cool days, I had some hang fires. Including one on a cool morning at the 800 yard line of the Palma individual match a couple years ago. (Thankfully, it was on the 800 yard line and not the 1000, and I was still pointing at the middle after what seemed like an hour between the click and the bang.)

I didn't notice enough (or really, any) benefit from them to take the risk of the hangfires when shooting the 155s, but the little bit I played with the 200 Hybrids, the small primer brass seemed to work very well. (And that mirrors what I've heard from the British Match Rifle shooters--the SR brass gives a nice advantage with the heavies.)

Nate

 

[JarheadAZ]

Back just after 2002, I spoke with G. David Tubb about his experience with the smaller primers. He concluded that the experiment was really a waste of time. When he increased the small primer 's powder charge, the load returned to its large primer accuracy, and vice versa. the thing that was important was that the smaller primer needed additional powder to achieve essentially the same performance. There was no special advantage either way.

 

[SHootSTraight22]

Back just after 2002, I spoke with G. David Tubb about his experience with the smaller primers. He concluded that the experiment was really a waste of time. When he increased the small primer 's powder charge, the load returned to its large primer accuracy, and vice versa. the thing that was important was that the smaller primer needed additional powder to achieve essentially the same performance. There was no special advantage either way.

The advantage is in having a stronger case.. More reloads.. And, maybe a higher node that the standard brass want handle..

 

[Down South]

The advantage is in having a stronger case.. More reloads.. And, maybe a higher node that the standard brass want handle..

Bingo!