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300 RUM - Hodgdon US869

 
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  #8  
Old 08-28-2009, 02:45 PM
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Re: 300 RUM - Hodgdon US869

Big Buck, post what you find with the US869. I am following this closely. On the subject of Muzzle Brakes, I have been thinking about a brake if I can find one that won't blind and/or deafen my spotter (maybe won't need a spotter if the brake calms things down enough.) Is there such a thing? rc

Last edited by rhouser; 08-28-2009 at 02:49 PM.
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  #9  
Old 08-31-2009, 09:21 AM
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Re: 300 RUM - Hodgdon US869

Quote:
Originally Posted by rhouser View Post
Big Buck, post what you find with the US869. I am following this closely. On the subject of Muzzle Brakes, I have been thinking about a brake if I can find one that won't blind and/or deafen my spotter (maybe won't need a spotter if the brake calms things down enough.) Is there such a thing? rc
A brake and a properly set up rifle will allow spotting your own hits. BUT, there is always a need for a spotter (second person).

Get the hearing protection (muffs) for both of you with the voice/hearing capability., use plugs also, if you would like to).

Keep lots of batteries on hand, JIC.

Makes for great communication during the shot prep.
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  #10  
Old 08-31-2009, 09:53 AM
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Re: 300 RUM - Hodgdon US869

[quote=rhouser;307166]Big Buck, post what you find with the US869. I am following this closely. On the subject of Muzzle Brakes, I have been thinking about a brake if I can find one that won't blind and/or deafen my spotter (maybe won't need a spotter if the brake calms things down enough.) Is there such a thing? rc[/quote

I will be glad to share my outcome with you only thing is I'm tied up with work right now so I don't know when I'll get to shoot well I should be able to labor day About the muzzle break I got mine from shawn at defensive edge he told me that if your in the right postion you can spot your shots as close as 500 yrds I will say this his break made my 300rum using 210 bergers kick like or less than a 7mm-08 and .308 I shot my rifle then my inlaws .308 that had 150 grainers so I didn't kick at all and I thought my BIG 30 kicks less the only thing I would reccomend is that you get a cap that will protect the threads so when your hunting old horns and he don't always hang out at 500-1000 yrds you want have to worry about your ears hunting in the thick stuff One of the best things I've ever done for my rifle was put shawns break on it, worth every penny!

Big buck
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  #11  
Old 08-31-2009, 02:27 PM
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Re: 300 RUM - Hodgdon US869

I wish I had read this post yesterday. Just loaded up 20 rds incrementing upwards from 98.0 grs to 99.0, then 100.0, 100.5, & stopping at 101.0 grs. I am loading the 208gr AMAX, using FED 215 primers and RP brass (4 rds each). Mainly looking for pressure right now.

FWIW, One LRH member regularly feeds his 300 RUM 104.0 grs of US 869 driving a 240gr SMK.

I am going to proceed upwards from 101.0 grs in 0.5 grs steps mic'ing the case heads as I go.

I have a 30" Benchmark barrel on my rifle.
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  #12  
Old 08-31-2009, 08:12 PM
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Re: 300 RUM - Hodgdon US869

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Originally Posted by Chopaka81 View Post
I wish I had read this post yesterday. Just loaded up 20 rds incrementing upwards from 98.0 grs to 99.0, then 100.0, 100.5, & stopping at 101.0 grs. I am loading the 208gr AMAX, using FED 215 primers and RP brass (4 rds each). Mainly looking for pressure right now.

FWIW, One LRH member regularly feeds his 300 RUM 104.0 grs of US 869 driving a 240gr SMK.

I am going to proceed upwards from 101.0 grs in 0.5 grs steps mic'ing the case heads as I go.

I have a 30" Benchmark barrel on my rifle.
I'd be very interested in your observations.
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  #13  
Old 09-06-2009, 01:14 AM
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Re: 300 RUM - Hodgdon US869

Today I got in a brief range session with the Rummy, 208gr AMAX's, Fed 215GM primers, RP Brass, and US869 powder. The results were very promising. nice groups, 0.4 to 0.8 @ 100 meters. No signs of pressure even at 101.0 grs of US869.

I did not cronograph the loads, I was mainly looking for pressure sings and then accuracy. I mic'd the case heads and I have not detected expansion. Today I shot 4 rds of each charge, stopping to clean the bore after each 4 shot group. After cleaning I fired a fowling shot from the next level and then 3 for accuracy.

I seat my bullets out just off the lands, they are to long for the magazine. I did not measure the COL, I will post it later.

I am going to continue in 0.4 grs steps upwards from 102.0 grs to 104.4 grs using the same components listed above. I will cronograph from here up.

Wonder how everyone is doing?
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  #14  
Old 09-17-2009, 11:26 PM
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Re: 300 RUM - Hodgdon US869

I completed my range testing of the 208gr AMAX loads of 102.0 grs thru to 104.0 grs. The group sizes are coming in nicely, had one sweet load at 102.5gr (1/4 moa, 3164 fps avg) and then it opened back up (1 moa).
As I continued upwards towards 104.0 they began to decrease to 1/2 moa & 3224 fps avg.
I am going to continue upwards in 0.3 grs steps towards 106.0grs as I continue to look for another dip in group sizes.
I have been carefully mic'ing my cases and so far no pressure signs.
I am using FED 215 GM primers.
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