Thread: 20" Tikka 7 PRC

Getting good results with 180eldm 66,4gn H4831sc, large rifle primer (fiocchi) and Hornady brass

Originally Posted by tibo

Getting good results with 180eldm 66,4gn H4831sc, large rifle primer (fiocchi) and Hornady brass

Barrel length and speed mate?

Originally Posted by Kelton

Barrel length and speed mate?

24inch, 2930fps

First two group of 3 shot at 300m. Got too excited and pulled those third shot…

Was also going to try Staball HD I won’t bother.

Originally Posted by tibo

Getting good results with 180eldm 66,4gn H4831sc, large rifle primer (fiocchi) and Hornady brass

Your brass lasting with that? 2.4gn over book max is a fair bit with the 7prc. Maybe using lrp instead of magnum lrp changes the peak pressure.

Originally Posted by 6.5 CRD

Your brass lasting with that? 2.4gn over book max is a fair bit with the 7prc. Maybe using lrp instead of magnum lrp changes the peak pressure.

I went up 67gn, no pressure signs… it felt like a really mild charge compared to what I was getting with factory ammo… I am at the 4th firing on some of the brass, primer pocket getting loose but are still ok. Again nothing as bad as some of the factory ammo.

I think you are correct about large vs magnum large. A mate using H1000 with large instead magnum is also couple of gn past max charge

Having less jump seems also to reduce pressure. I tested 60th (like factory 180) with same charge and was getting 2960-2970fps and slight ejector marks

Originally Posted by tibo

Having less jump seems also to reduce pressure. I tested 60th (like factory 180) with same charge and was getting 2960-2970fps and slight ejector marks

Yeah that makes sense, my creedmoor does the same thing. I run 143 ELDX out almost jammed, if i shorten the coal with the same powder charge the velocity goes up and i run into pressure.