Thread: 20" Tikka 7 PRC

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

Dont rule out large rifle primers either if you have some I used them in my 7mm blaser mag to with greater results and the same in my 7LRM wasnt until over 70gns that I started seeing the benefits of the magnum. I use federals

Originally Posted by Kelton

wasnt until over 70gns that I started seeing the benefits of the magnum. I use federals

What benefits were you seeing? I have been experimenting with FED210 vs 215 in a couple of my rifles (not just magnums, 7mm08 & 6.5 Creed) with some interesting results.

Originally Posted by 6.5 CRD

What benefits were you seeing? I have been experimenting with FED210 vs 215 in a couple of my rifles (not just magnums, 7mm08 & 6.5 Creed) with some interesting results.

Far better sds with 210s up to 70gn then over 70gns the sds were better with 215s . 215s often go well in the 08 case heads .

Nice work, yip iv being guilty of ruening groups on the last shot by being cocky with how the first few shots landed haha

Originally Posted by Kelton

Nice work, yip iv being guilty of ruening groups on the last shot by being cocky with how the first few shots landed haha

Classic! I always shot better when conditions don’t allow me to spot my shot…

Those 2 groups were 25th and 20th. Those 180 eldm seems pretty sensitive to jump.

Originally Posted by tibo

Classic! I always shot better when conditions don’t allow me to spot my shot…

Those 2 groups were 25th and 20th. Those 180 eldm seems pretty sensitive to jump.

I shoot them in my saum at 27thou jump for no other reason than thats what fits the mag and its a bloody sweet spot mate will be trying the same when ever seating dept testing this bullet

Originally Posted by tibo

Classic! I always shot better when conditions don’t allow me to spot my shot…

Those 2 groups were 25th and 20th. Those 180 eldm seems pretty sensitive to jump.

How far off lands are you loading them I'm having a bit of a play with mine again in the next few weeks

Sent from my CPH2145 using Tapatalk

Originally Posted by 25/08 IMP

How far off lands are you loading them I'm having a bit of a play with mine again in the next few weeks

Sent from my CPH2145 using Tapatalk

I had a nod at 20, 25, 30 so settled for 30th so it keep shooting well after a bit of throat erosion. It seems to be barrel/powder type, charge dependent, heard some people finding sweet spot at 120th other kissing the land. Factory 180 eldm is also at 60th in my barrel and does ok.

Interesting. Every rifles going to be different i guess but from my experience, using FED215 which is whats used for hornady data, book max has definitely been max in my rifle for 2225 2217 and RL26

Originally Posted by 6.5 CRD

Interesting. Every rifles going to be different i guess but from my experience, using FED215 which is whats used for hornady data, book max has definitely been max in my rifle for 2225 2217 and RL26

Yep, there is no magic receipe, I see people testing load given on internet more and more without working on a ladder this is worrying. I would definitely NOT try 66.4gn with magnum primer.