Anyone have any load data for this round using RL17 and Horn 162 Amax? From what I am finding, it looks like if I start working up rounds around 54 grains that I should be ok, but others experience would be helpful.
Thanks.
Thanks.
- Thread starter head2h2o
- Start date
Re: 7mm RSAUM
R22 at 58.5 gr and 162amaxes
R22 at 58.5 gr and 162amaxes
Re: 7mm RSAUM
What kind of speeds are you getting? Anything close to 3000 fps?
What kind of speeds are you getting? Anything close to 3000 fps?
Re: 7mm RSAUM
Dont know about speed but it pretty good shoots good too!!!!
Dont know about speed but it pretty good shoots good too!!!!
Re: 7mm RSAUM
I'm just crunching numbers and 54 looks to be a good starting place...but as always, search for data in more than one spot.
I use this for a comparison when I can't find book data.
300 WSM with RL17 and 180gr bullet has a book max at 66gr
300 SAUM with RL17 and 180 bullet has a book max at 63gr.
3 grain difference.
7mm WSM with RL17 and 160gr bullet has a book max at 60gr
it would seem logical then, that...
7mm SAUM with RL17 and 160gr bullet has a theoretical book max of about 57gr
I would say 57 is probably ok for a max...so your 54 should be just fine to start as well.
It looks like RL25 should get you to 3000fps without a problem as well, and there is book data for that at Alliant.
If the 300 SAUM can push 180's beyond 3000fps then I see no reason why the 162's can't do the same thing or faster in a 7mm SAUM
I'm just crunching numbers and 54 looks to be a good starting place...but as always, search for data in more than one spot.
I use this for a comparison when I can't find book data.
300 WSM with RL17 and 180gr bullet has a book max at 66gr
300 SAUM with RL17 and 180 bullet has a book max at 63gr.
3 grain difference.
7mm WSM with RL17 and 160gr bullet has a book max at 60gr
it would seem logical then, that...
7mm SAUM with RL17 and 160gr bullet has a theoretical book max of about 57gr
I would say 57 is probably ok for a max...so your 54 should be just fine to start as well.
It looks like RL25 should get you to 3000fps without a problem as well, and there is book data for that at Alliant.
If the 300 SAUM can push 180's beyond 3000fps then I see no reason why the 162's can't do the same thing or faster in a 7mm SAUM
Re: 7mm RSAUM
cbass,
That seems like some reasonable logic. I'll work it up starting from 54 like I figured and go from there.
Thanks.
cbass,
That seems like some reasonable logic. I'll work it up starting from 54 like I figured and go from there.
Thanks.
Re: 7mm RSAUM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: head2h2o</div><div class="ubbcode-body">cbass,
That seems like some reasonable logic. I'll work it up starting from 54 like I figured and go from there.
Thanks. </div></div>
Please post your findings...I am almost done with the berger 180s and wnat to try 162s next...I was interested in RL 17 as well.
Thanks
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: head2h2o</div><div class="ubbcode-body">cbass,
That seems like some reasonable logic. I'll work it up starting from 54 like I figured and go from there.
Thanks. </div></div>
Please post your findings...I am almost done with the berger 180s and wnat to try 162s next...I was interested in RL 17 as well.
Thanks
Re: 7mm RSAUM
RL 17 seems a little fast for that. Let us know how it works out for you.
RL 17 seems a little fast for that. Let us know how it works out for you.
Re: 7mm RSAUM
"RL 17 seems a little fast for that. Let us know how it works out for you".
Actually, for me RL-17 gave me more velocity with less powder than anything else. I tried H-1000, IMR-4831, H4831SC, H4350, IMR-4064, RL-22. I got to 3000 fps with 67.7 grains of H-1000 and I got to about 3080 with 4064. Every other powder hit pressure between 2900 and 2950. With RL-17 I actually got up to 3130 or so and had lower ES and SD numbers than any other powder. At 58.3 I've got single digit ES and SD numbers, however, like I said above I still think it is too hot.
"RL 17 seems a little fast for that. Let us know how it works out for you".
Actually, for me RL-17 gave me more velocity with less powder than anything else. I tried H-1000, IMR-4831, H4831SC, H4350, IMR-4064, RL-22. I got to 3000 fps with 67.7 grains of H-1000 and I got to about 3080 with 4064. Every other powder hit pressure between 2900 and 2950. With RL-17 I actually got up to 3130 or so and had lower ES and SD numbers than any other powder. At 58.3 I've got single digit ES and SD numbers, however, like I said above I still think it is too hot.
Re: 7mm RSAUM
I'm tinkering with RL17. I started at 54 grs. and tested to 56 grs. with no pressure signs (24" factory barrel). Accuracy is good at 56 grs. and was good from 54 grs. I will test again soon creeping up from 56 grs. and see what happens. I also had good results with H4831 SC. Wish I knew the speeds but I don't own a chrono yet.
I'm tinkering with RL17. I started at 54 grs. and tested to 56 grs. with no pressure signs (24" factory barrel). Accuracy is good at 56 grs. and was good from 54 grs. I will test again soon creeping up from 56 grs. and see what happens. I also had good results with H4831 SC. Wish I knew the speeds but I don't own a chrono yet.
Re: 7mm RSAUM
Just to update, I did some load development yesterday. My final loads working up yesterday were at 57.5 gr of RL17. I was getting about 3020 fps with no signs of pressure at all. There was still a reasonable amount of room left in the case also. It looks like from the trend that I am seeing that I am coming into another node as the groups are getting tighter again. It looks like I will be able to hit the 3100 fps mark without much problem.
Just to update, I did some load development yesterday. My final loads working up yesterday were at 57.5 gr of RL17. I was getting about 3020 fps with no signs of pressure at all. There was still a reasonable amount of room left in the case also. It looks like from the trend that I am seeing that I am coming into another node as the groups are getting tighter again. It looks like I will be able to hit the 3100 fps mark without much problem.
