Phil Rizzo
Well-Known Member
I'm told the old powder had more "pop" but I don't know if it had enough to duplicate a 7 RM with its larger exhaust pipe, and much larger case.
Same for me. My 270 Win couldn't come close to Jack's #'s at safe pressures. With 130 gr bullets I had trouble getting 3000 ft/sec.Rev Jim, Just like you. As a Pre Teen and teen ager I remember reading Jack O Conners accounts of how he could shoot a 130 and 150 grn bullet, from his 270 Win. at speeds that closely approached the "New 7mm Rem mag " even suggested the velocities were so close a hunter didn't really need that new Rem. cartridge. I thought that was amazing. I hung on every word. I'm 75 now and I have still never been able to duplicate what Jack did. Especially getting OVER 60 grns of H 4831 in to a . 270 case. Gave up trying to do that trick ages ago. I sometimes wonder if Jacks' rifle chamber and cases might have been 'Improved" No disrespect meant to the Dean.
Best I could get with my 26 inch barrel was 2668, but with a quarter inch Moa, I'm not going to complain. With a 150 grain ELD h4831.speed isn't everything!!As a young man I read Bob Hagel's exploits with his 7mm Mashburn Super Mag ( I think he claimed 3100/175?) . My best speed I could get my 24" Rem Mag to was 2950/160. Later in Life, I have tried 26" 7mm STW's, a 7mm RUM and a 26" Rem Mag. I was never able to get his storied speeds. I have read where both the 160 and 175 could actually be ran at these speeds, but how are they doing it? Are they exceeding the pressure limits? Now I read in a few places where a 24" barrel 28 Nosler ( a shortened RUM) has done 3300/160? How can this be? The ONLY reason I EVER wanted ANY 7mm Mag was for these speeds, ha. Not for LR Hunting but stretched string 400yds and big thump on big critters. I easily got 3200/210 XBT/340 Wby, but it was not 7mm! ha How did Uncle Bob do it? Opinions?
There are several powders that work well in the 28N. These are what I have used.Impressive Uncle Lance! What was your best powder with the 160 and 175gr bullets?
I wasn't able too get the 195's to shoot in 5 different 28N's , however it was pretty easy to get all 5 to shoot the 180's and over 3150 velocity with 2 going over 3300. Always had a very accurate load before any pressure signs.I've got a buddy with a 28 Nosler and with 195's hes only getting a bit over 2800 before it gets pressure. I thought it would be faster. Maybe just a slow barrel
A lot of my elk shots are between 800-1200 yards. My last deer was 1336 yards. (338 edge in 2008) so it's a need to have a long range rig with a bullet/cartridge capable of the job."With the 160-175" it seems they are just not that much faster than a 26" 7mm RM are they? I mean if one is a "normal hunting range" hunter, shots usually under 350yd, are they? Most elk killed around here are 200yds and way under, often less than 100yds. Any magnum is "usually" a bit heavier and slower to bring into use at those ranges, especially for fast shots, I know these big guns are fascinating, and the right tool for "way out there". I always have the use of my Marine SIL's Mod 700 300 RUM/200 NAB and 6.5x20 Huskemaw scope, 26" barrel, brake, Shilen trigger and a Boyds Laminate stock I had slimmed/trimmed down and checkered. I gave him the bare rifle as a "welcome home" from his second tour in Iraq, 2006. )I am a great father in Law!) ha He put the Huskemaw on it. He later used that rifle with my handloads for a bit over 440 yds pn a cow. BUT, he and his friend had to wade through knee deep snow and 400yds of Oakbrush to get to her! Oh no sir, not me! ha
Yes 7 Rum is right there and more with N-570.7STW or 7RUM will do it fairly easily. My own 7STW has a 26" barrel and I got 3250fps without pushing 175g ABLR, the 168g ABLR was above 3300fps with one powder (Retumbo).
Cheers.
There's been a large majority of shots that have been passed on because of wind issues.My goodness Mr RH300! That is definitely "Long Range" (notice how I capitalized the words? ha) How do you judge the wind out like that? I am very poor at it myself. I have been lucky enough that the longest shots I have made on a handful of game is 400yds; but the wind was not blowing at any of them, from Texas, to Utah to Namibia. But a hunt near Laramie, WY for antelope in '94 out on those "short grass prairies" ( I call them) it was horrible! That wind blew me and my light little Mod 700 Mountain Rifle all around, ha, I knew a heavier rifle would have been a better choice. So there's that also. I admire you guys that do it right, you are indeed a "Rifleman".!