Home Forums Reloading Big Game Rifles 7mm STW and retumbo..

I am wanting to devolop a load for my STW. I am thinking right now about trying the 140 Accu-bond, the 140 Partition, and the 140 TSX. Have all 3 in hand. Will probably try the 140 AB first.
I was origionally thinking about trying retumbo with these. I looked the 2 manuals that have retumbo listed in them and there is a big difference.
The Hodgdons manual says for 140 and retumbo.
starting load 83gr 3165
Max 88Cgr 3347

The sierra manual says
Starting load 75.9gr 3100
Max 82.4gr 3300

I see that the max sierra is under the starting hodgdons. Anyone had any experience?

Have just reloaded about 20 rounds of STW,(I bough about 7 boxes on closeout for $10 a box a couple years ago.)
Would you start with the retumbo of go with RL22 RL25 or something else. I have heard of people getting over 3400FPS with 140's. I am guessing 7828 will get recommended like it did for the 300WBY loads.
Thanks for any help
Mike

I just worked up a load for my own 7mmstw rifle using the 140gr mrx.80gr of imr7828 with a federal 215 primer and remington case is producing 3500fps with a 26" barrel and groups are averaging 5/8" at 100 yards.

Hmm. That sounds like a pretty good load. Any one on the retumbo or has anyone used it with 140's? I know alot do with the 160's and such.

Consider Ramshot Magnum, a more consistent choice. I worked with Retumbo and H1000 and never got consistency, plus there was great variation from lot-to-lot in Retumbo, like about 3g difference for the same velocity in the top loads. I ended up going to 160's and Magnum.

My 7STW really likes 76.0 grs. of RL-22 with the AccubBonds. It shoots .75" with the 140 gr. AccuBonds using Rem Brass and WLRM primers. My rifle shot ok with H-1000 and didn't like IMR7828.

Good luck.......

Bob

I have loaded for several 7 STW`s and with a 140, IMR7828 is hard to beat. Retumbo is way slower, and may be perfect for maybe 175`s, but go a faster rate for the lighter pills and start with 7828 and save some barrel life. 3400 is a good goal. Cooler temps and 81.5 grains does really well. Do not try that load in this summer heat. Excellent accuracy and the 3400 you can bet. I`d use 80 as a max during the summer time.

I am going to do some shooting today. Am going to try retumbo and RL22. Anyone know of a good starting point for the retumbo with 140's? The 2 loading manuals kind of made me wonder.

I noticed that I have a couple boxes of 150 Partitions. Would that be a better choice to use with retumbo?

Will have to get some 7828, Alot of people recommend it.

Thanks Mike

I just finished up developing a load. 160gr accubond over 77 grains of IMR 7828, Shoots 3180fps.

I use 7828 with my 150 partition load.Winchester brass and CCI mag primers.
Retumbo would get the call for a 175 grain.Otherwise she's a wee bit slow with lighter bullets.

Ok thanks, I guess I am going to have to get some 7828, Is there any reason to not get the SSC version.

So far I have just used the Rl-22 with mixed results.

The only reason I'd opt for the short cut would be the better metering qualities.

I have both versions and use the standard long kernel in such a big case.

Me too.I like the standard also.

Probably a dumb question, but can you interchange data between the SC and standard variety of 7828??

Yup your case isn't as full though.

I gotcha.
After I posted that last, I realized the only caliber I use 7828 for is the 300RUM.
So, no Short Cut for me!

Ok thanks. So I guess the standard. Is there an advantage to the standard, just wondering?

The only advantage I could think of would be the load density.
I think I heard somewhere(how is that for authoritative? )that a higher load density is desirable.

Well I picked up some IRM 7828 at my local shop yesterday. All they had was the old blue metal canisters, so I picked up one and took an empty hodgdons can and relabled it.

I have to say thanks for the recommendation. I worked up to the recommended load of 80gr actually ended up using 79.5 with the 140 AB. It shot 3370 and shot 3 shots you could cover with a sharpie lid.

I have had some thoughts of trying the 140 TSX but for right now will just be using this gun on whitetail so will just stick with the 140AB.

I do sometime want to try some of those GS custom HV bullets. I have heard that you can really get that 130 flying out of the STW. Its just the $70/box of 50 that is stopping me right now. LOL!

Thanks again, Mike

I`m really glad you tried that 7828. I could not get by without it. I have a large cased 7mm that runs 3600+ fps with the 140 AB and it loves the stuff too.