I cronoed Hornady DGS .470 ammunition..

[Pondoro]

..in my Krieghoff double...I get an average of 2170fps from 23,5" barrels..that is well over 5000 foot-pounds.. The ammo regulates very well at 50 yards..

Federal give me barely 2100fps..

Have anyone of you cronoed different .470 factory..?

As a curiosity I also cronoed 1970 vintage Kynoch .450/400 3 1/4 softs in my Joseph Lang (28" barrels..) and got barely 2050fps.. Okay the ammo is 50 years plus..but its 100 fps less than what Kynoch promised back in the day..

BUT I got 30mm groups at 50 yards...the rifle is extremely accurate with this ammo..this rifle was regulated with cordite back in 1906..perhaps re-regulated later..? Kynoch changed the propellant at some point..

 

[Just a dude in BC]

I do not have experience with a 470, however I have very recent experience with Hornady DGS in a 500ne I was working up loads for.

It was a Ruger no.1 that I re stocked and re barreled with a 26" barrel match grade stainless. What I noticed was that the DGS came out NOTICEABLY hotter than they should have. The box listed 2120 as the velocity it should have, however all the shots I chronied came out between 2230 and 2250! Needless to say the recoil was "interesting".

While working up loads I tried a number of different recipes from barns and hogdon, and they all produced loads within 20~ish fps of what was advertised.

To me this says that the rifle was doing exactly what it was supposed to, but that some lots of hornady DGS seem to run hot.

 

[PCC600]

..in my Krieghoff double...I get an average of 2170fps from 23,5" barrels..that is well over 5000 foot-pounds.. The ammo regulates very well at 50 yards..

Federal give me barely 2100fps..

Have anyone of you cronoed different .470 factory..?

As a curiosity I also cronoed 1970 vintage Kynoch .450/400 3 1/4 softs in my Joseph Lang (28" barrels..) and got barely 2050fps.. Okay the ammo is 50 years plus..but its 100 fps less than what Kynoch promised back in the day..

BUT I got 30mm groups at 50 yards...the rifle is extremely accurate with this ammo..this rifle was regulated with cordite back in 1906..perhaps re-regulated later..? Kynoch changed the propellant at some point..

I think the Kynoch ammo was always slower than advertised . I have a 450/400 WR with 26 inch barrels made in 1920. I get good regulation at 2050 fps so I suspect that is how they were originally set up .