Any 7mm experts out there ?
glancing at a friends 300 lazzoroni cartridge compared to a 300 ultra cartridge, I didnt see that much obvious difference in case capacity as I wasnt interested at the moment..now i am interested in a hot 7mm and looking at the factory ballistics the firebird claims about 300 fps over the ultra in these 7mm's...is this reality or does handloading narrow the gap considerably ? Anybody have any experience with the 7.21 firebird in the sako rifles ? I know you have to pay through the nose for these dies and their brass and was wondering if you really get that kind of performance...
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lazzoroni really did his homework in developing his cartridges so i would think if would be safe to assume that whatever he says the factory ballistics are is very close. just my opinion of course 0 -
you might also consider the 7 mm stw it is very fast and wouldn't be quite as costly as the other two you mentioned 0 -
i have my reserve on the lazzeroni line, if my memory isnt failing me they are loaded to very high pressure much like the the short mags i see everyone raving about [V]
60,000+ is hot and life expectancy has to be short, primers pockets have to swell.
i have been reloading the 30-378 near maximum loads & have gotten 4 reloads so far out of the brass.
although not as high a pressure i am told throat life in these type rifles start eroading in as little as 75 rounds.
Good luck0 -
Just to throw a little more additives to the pot and stir - how about a 7mm Dakota? Another proprietary round, but has velocities between the 7 Weatherby and the 7 STW, with loaded ammo available from the mfgr or Graf & Sons and Midway. Is built on the .404 Jeffry case. I have a customized Ruger M77 (tang safety) in this chamering and am well satisfied with accuracy and velocity.
Keep off the Ridgeline0
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