Anyone able to get any 7mm Cartridge to 3300/160 or 3200/175gr?

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?

what barrel length did Bob Hagel use I wonder ?

The powder choices we have available now should make speed goals easier to attain.

Easily with 7RUM, 7STW, 28NOS (STW COPY) with 26" and some loads with a 24". Your reading makes me think of Oconner, Keith, and the insane following they established simply because information sources were so limited at that time.

Oh yes, and don't forget P.O. Ackley's 2 vol. work, ha! The slowest powder I could get back then was Norma MRP, H870 and finally 78728 a bit later. What powders are you using Reelamin for these speeds?

My 7mm STW 26" 1-8 launches 160gr Nosler Accubonds at 3300 and 160gr Shock Hammers at 3350. Both using H1000.

RevJim said:

Oh yes, and don't forget P.O. Ackley's 2 vol. work, ha! The slowest powder I could get back then was Norma MRP, H870 and finally 78728 a bit later. What powders are you using Reelamin for these speeds?

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Dont have my data in front of me for all the load development data. Current/final loads 7RUM 7828/Retumbo/8700, 7STW R25/Retumbo, 28Nos Retumbo. The 28 is 24" and is hard on brass over 3300/160, and its final load is right around 3275.

Easily with my 7 stw. I'm over 3200 with 190gr bullets.

7 rum. 160 Nosler BT. LRT powder. 26" bbl. 3400 and change

7 RUM should get there no problem.

I agree with jessej, be advised start saving for a new barrel.
Steve Bair

My last 7mm was the 26" 7mm Rem Mag, I used R26 for 3100/160 and R33 for 3000/175 (both Sierra SBT Gamekings) This was with accuracy, I could go a tad faster but it fell apart. I used 7828/140 TTSX in the RUM for close to 3350, and I could make good hits out to 600 (on targets) using a BP Reticle 3x9, but I really wanted that 3300/160! I want to add that all my rifles are "sporter weight", and I don't dial, but I do like to shoot through elk at any angle "if possible", ha.

jessej said:

7 rum. 160 Nosler BT. LRT powder. 26" bbl. 3400 and change

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In an unbraked 8 lb rifle, some of your tooth fillins may come loose with this load.

Not being a LR Hunter, in any 7mm Rem Mag (or 280 AI) or 7 STW I always used factory barrels. I never had one's throat lengthened , etc. The RUM was an unknown aftermarket 25", but a #4 still. My recent 7x57 is a new Shilen #2, 25", only 25rds through it as yet, and it is very accurate (my first 7x57 to be so out of 5!). I figure when/if I ever can't live without "more" I can have it reamed to the 280AI alot cheaper than tweaking out a new 28 Nosler. I have never killed elk or similar sized critters with any 7mm, only 30 (mostly Win Mags) to 338/340,(Win to RUM and only one in 375 calibers. But deer/Exotics/antelope alot in 7mms. Certainly don't "need" a 3300/160 for them at 350 and under, ha.