called sierra today,they said they only have data with hodgdons powder as of now.with 97 gr.H-1000 and 140 gamekings at 3350 in a 24 inch bbl. the guy said to +/- about 70 fps per inch.so with the 26 inch tube that should be about 3500.tell you for sure next weekend.since the factory loads are 3475 that may be about it,but i doubt it.from all the new slow powders i bet there is something that will do over 3500 safely.
98 gr H-1000 and 140 sierra went 3524 with 1 inch groups.there is the speed but not quite the groups i was looking for.imr said they were testing 7828 at this time,but they werent done.
Eric, If you get any info please forward to me. I purchased a 7 RUM Monday and have been all over the net looking for info. Even had to order factory ammo. Thanks
matt,i e-mailed hornady.they said they had data but wouldnt e-mail it to me.they wanted my adress to mail it in writing.gave it to them and i am still waiting.
Eric Iloaded 95 gr. H1000 140gr Nosler BT They shot very well. Don't know how fast. I purchased some factory ammo last week when I got my rifle. I had some of them have blow by at the primer and the bolt was very hard to open. Guess I'll call Remington this morning and let them know.
hornady has come through.these are all max loads. 139 BTSP- RL22 90.4 3400-H-4831 87.5 3350-IMR 7828 89.1 3400-H 1000 96.4 3500 154 BTSP-RL 22 86.1 3250-IMR 7828 85.5 3200-RL 25 93.7 3300-AA 8700 102.8 3300 162 BTSP-RL 22 85.9 3250-H 4831 86.1 3200-RL 25 91.3 3300 175 SP-RL 22 82.1 3050-RL 25 88.6 3100-AA 8700 97.5 3050 the people at hornady mailed me this data,hand written.the data was made using a factory 700 bdlss with a 26 inch bbl.the people at hornady were the most cooperative of the 5 or 6 places i called about new data for this round.and they did what they said by mailing me the data.hope to find a good load somewhere out of it.
I have been shooting Reloader 25 powder at 93.5 gr.with hornaday 162gr btsp withb a matched fed 215 primer shooting about 3/4 of an inch,they chronograph 3350 using a dillon chronograph,I am shooting a remington stainless steel barrel 26 inch. One thing I found out bdlss that the barrel get hot very quick,I ende3d up shoot two round then have to let gun cool down in order to get 3/4 groups or less.
Also found imr 7828 90.0 gr with nosler partition 140gr chronograph at 3450 with fed matched primer.
Starting to work up loads using hodgdon 4831 will post finding next month. mark
quote:Originally posted by Eric Leonard: the 140 nosler factory load is giving 3475 with inch groups,but i would like 3550 with the 140 sierra. HELP cant find any load data for this round.
I have done some testing with 140 g combined technologies B.T moly coated bullets with H1000 100.0g , they shot 1/2" groups at 3568 fps at 80 degrees with no pressure signs . still testing 7828 and more H1000
i got to 3540 with the 140 sierra and h-1000 but the groups still werent there. went to the 154 hornady and 88 gr rl22 for 3405 and .6 inch groups.thats almost as flat as the 140 at 3500 and probably a better big game load.
[This message has been edited by Eric Leonard (edited 01-17-2002).]
quote:Originally posted by Eric Leonard: i got to 3540 with the 140 sierra and h-1000 but the groups still werent there. went to the 154 hornady and 88 gr rl22 for 3325 and .6 inch groups.thats almost as flat as the 140 at 3500 and probably a better big game load.
check out this month's shooting time issue is about the 7mm ultra mag with reloading data from Rick Jamison on reloading the 7mm ultra mag. I belive it has infro that you are looking for. mtns4me
quote:Originally posted by Eric Leonard: i got to 3540 with the 140 sierra and h-1000 but the groups still werent there. went to the 154 hornady and 88 gr rl22 for 3325 and .6 inch groups.thats almost as flat as the 140 at 3500 and probably a better big game load.
check out this month's shooting time issue is about the 7mm ultra mag with reloading data from Rick Jamison on reloading the 7mm ultra mag. I belive it has infro that you are looking for. mtns4me
Eric try hodgdon 4831 starting at about 84.0 and work your way up from there, I have been having very good tight 1/2 inch groups with it using a 162g hornaday bullet some time this week I will have more infromation what this powder does with a 140 g nosler partition that should be fairly close to your sierra 140g i would work up a load for you but i dont have any sierra 140g bullets. you can contact me by e-mail if you need too , mark
Surplus WC 860 and WC 872 are available from several suppliers. I have had the better luck with WC 872 in overbore cases like the 7mm RUM. If you have a chonograph and know what you're doing when it comes to working up loads, I highly recommend these two (very) economical powders. They've been great for me in .264 Winchester and 7mm STW, out performing everything else with excellent consistency and accuracy.
Posts: 13262 | Location: Henly, TX, USA | Registered: 04 April 2001
Just some info. I found some once fired brass for the 7mm ultra from Blue Star. They were great in helping me. I guess it is test brass from Remington. If you are looking for some brass you can try them at www.blue-star-inc.com
recieved infromation from accurate gun powder co. for the 7mm ultra mag it open in microsoft office excel,if you want it e-mail me at mtns4me@mail.direcpc.com and i will send it to you,remember you have to have excel in order to open it. Eric leonard here the ifromation they had for a 140g swift using accurate powder 8700 starting at 92.7g =3127 ft max was 103.0g = 3474 ft hope this help you. mark
quote:Originally posted by Eric Leonard: hornady has come through.these are all max loads. 139 BTSP- RL22 90.4 3400-H-4831 87.5 3350-IMR 7828 89.1 3400-H 1000 96.4 3500 154 BTSP-RL 22 86.1 3250-IMR 7828 85.5 3200-RL 25 93.7 3300-AA 8700 102.8 3300 162 BTSP-RL 22 85.9 3250-H 4831 86.1 3200-RL 25 91.3 3300 175 SP-RL 22 82.1 3050-RL 25 88.6 3100-AA 8700 97.5 3050 the people at hornady mailed me this data,hand written.the data was made using a factory 700 bdlss with a 26 inch bbl.the people at hornady were the most cooperative of the 5 or 6 places i called about new data for this round.and they did what they said by mailing me the data.hope to find a good load somewhere out of it.
I was just thinking you see some very impressive numbers for the 300 RUM , why would the 7mm RUM not be capible of close to the same speed and accuracy , is it just to early in the testing or is it just the case design of the 7mm . If that is the case or not should it not be close to Lazzaroni'es Warbird and their counter part 7mm with the same case design ,if anyone knows please fill me in. thanks Craig
2 cases of the same size but 2 calibers as the 7 and 30 rums with the same bullet wieght the 30 will always be faster.just as a 270 win and 30-06 both loaded with 150s the 06 will be faster.something to do with bore size and pressures.but a 7mm 150 gr has a better b.c. than a 308 150 gr so it will fly as flat going slower.to compare speeds of the 7 to the 30 compare bullet wieghts with the same s.d. as the 140 7 to the 30 150 or the 160 7mm to the 180 308.having said all that i have the 300 rum and my brother has the 7 rum .the 300 shoots faster and hits harder but the 7 will shoot just as flat. i think the lazzeroni uses the 416 rigby case which is bigger than the 404 jeffery the ultra line uses.
I see that you have gotten a fair amount of info. I just got the new shooting times mag in the mail and it has a large amount of info on the handloads for the 7 RUM. 100-175 grn bullets and diffent legnth barrels as well. I can get the info if you need it just email me a a e-mail address to send it to. There is a large amount of info.
the rifle is my brothers,i have the 300 RUM.it is the 700 BDL SS with 26 inch bbl,a shilen trigger and a 3.5-10x50 leupold. he smashed a 180 pound Ky. 10 pointer with the big 7 and the 154 Hornady at 3405.when we skinned the deer both front legs were unattached except for a little hide. pretty awesome round,but i prefere the big 30.
[This message has been edited by Eric Leonard (edited 01-17-2002).]
