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Bullseye Powder 50y Load

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Post by Orion 5/3/2023, 1:59 pm

My best load below is using BE with 4.7 grain, which seems hot enough (3.5” groups). My scope rings come a bit loose every time... I didn't use a ransom rest, but rested the pistol on a table. I can shoot better than my loads, so I'm wanting to tighten-up a 50y load. 

Load data:

  • 4.5-4.8 grain Bullseye
  • 181.5 gr Brazos
  • 0.922" length from shoulder to bottom of brass
  • 1.25" OAL
  • 0.469" crimp

What can I do to increase accuracy with these Bullseye powder loads?


Last edited by Orion on 6/11/2023, 8:39 am; edited 3 times in total
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Post by Jon Eulette 5/3/2023, 2:21 pm

Out of curiosity have you tested your pistol with factory match ammunition to confirm its own ability to group? This will let you know how close you are getting with your reloads.

Your loads are quite warm. Are you springed properly? If too light, your groups will open up. What pistol are you using?

Assuming 185 Brazos? 

Jon
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Post by Kermit Workman 5/3/2023, 3:57 pm

The usual load for a 200 grain cast bullet is between 4.0- 4.2 gr. of BE with a .469 crimp.
For a 160 cast bullet( 168gr. actual) I load 4.5gr. of BE. BUT I MUST tighten the crimp to .465.
I am not familiar with your bullet but the load seems hot to me. The dimensions you give for dimension shoulder to bottom of brass and OAL seem to be for a 200 gr. bullet.

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Post by PMcfall 5/3/2023, 4:05 pm

82 gr bullet????  Did you mean 182?  If so, 4.5-4.7 grs Bullseye is a lot hotter than most of us are willing to tolerate.  3.5-4.0 would be more in the ballpark.  If that won't work, I would be looking for another bullet.
Phil
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Post by Multiracer 5/3/2023, 5:00 pm

" Are you springed properly? If too light, your groups will open up"
I wonder if this is some of my problem with my old Colt wad gun?

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Post by Allgoodhits 5/3/2023, 8:08 pm

Orion wrote:My best load below is using BE with 4.7 grain, which seems hot enough. My scope rings come a bit loose every time... I didn't use a ransom rest, but rested the pistol on a table. I can shoot better than my loads, so I'm wanting to tighten-up a 50y load. 

Load data:

  • 4.5-4.8 grain Bullseye
  • 82gr Brazos
  • 0.922" length from shoulder to bottom of brass
  • 1.25" OAL
  • 0.469" crimp

What can I do to increase accuracy with these Bullseye powder loads? EDIT: These loads are not 3.x, they are 4.x.

Bullseye Powder 50y Load 9f9ef310

Your image noted as 3.7 BE looks pretty good to me, especially with a loose scope and from the bench. I would use some BLUE locktight on your scope screws, snug them down and do that some more.

FWIW in my slide mounted scoped guns shooting 180/5 gr and 200 gr LSWC bullets 4.0 and 3.8 grains of BE respectively is the ticket.  If running 185 JHP then the load goes up to 4.4 - 4.6 gr BE. Pretty much the same charge weights using VV N310. Using WST then charge weights about 1/10 gr more. (Actual charge weight not volume setting on powder dropper). Last, I would find 4.5 - 4.8 gr BE with a 180 -200 gr LSWC to be an unnecessary pounding load. If your gun will not run the aforementioned loads without going into the mid 4's with BE, my guess is that it is over sprung, or under gripped. 
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Post by Orion 5/4/2023, 1:50 pm

Jon Eulette wrote:Out of curiosity have you tested your pistol with factory match ammunition to confirm its own ability to group? This will let you know how close you are getting with your reloads.

Your loads are quite warm. Are you springed properly? If too light, your groups will open up. What pistol are you using?

Assuming 185 Brazos? 

Jon

Hi Jon,

I am using a Les Baer Custom (2" groups on rest) with a 14 lb spring. I am using the 180 Brazos, but it actually weighs at 181.5. I'll take some Federal Gold Match 185 to the range tomorrow and let you know how it does.


Last edited by Orion on 5/4/2023, 1:59 pm; edited 1 time in total
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Post by Orion 5/4/2023, 1:59 pm

PMcfall wrote:82 gr bullet????  Did you mean 182?  If so, 4.5-4.7 grs Bullseye is a lot hotter than most of us are willing to tolerate.  3.5-4.0 would be more in the ballpark.  If that won't work, I would be looking for another bullet.
Phil

Apologize, type-o, 180 grain bullet, but weighs closer to 181.5  

https://www.brazosprecision.com/45-180gr-SWCBevel-BaseGroove-573ct-0099bullet_p_21.html

I wish I could shoot 3.5-4.0 of BE or even WST, but my LBC with a 14# spring doesnt cycle them with that low of a powder charge.
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Post by DA/SA 5/4/2023, 3:11 pm

Change to a lighter recoil spring.
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Post by Cmysix 5/4/2023, 5:05 pm

I'm using 4.5-4.7 Hercules BE to propel a 230 grn RN
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Post by BE Mike 5/5/2023, 8:39 am

Cmysix wrote:I'm using 4.5-4.7 Hercules BE to propel a 230 grn RN
Dang, that's some old powder! Very Happy
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Post by BE Mike 5/5/2023, 8:41 am

Orion wrote:
PMcfall wrote:82 gr bullet????  Did you mean 182?  If so, 4.5-4.7 grs Bullseye is a lot hotter than most of us are willing to tolerate.  3.5-4.0 would be more in the ballpark.  If that won't work, I would be looking for another bullet.
Phil

Apologize, type-o, 180 grain bullet, but weighs closer to 181.5  

https://www.brazosprecision.com/45-180gr-SWCBevel-BaseGroove-573ct-0099bullet_p_21.html

I wish I could shoot 3.5-4.0 of BE or even WST, but my LBC with a 14# spring doesnt cycle them with that low of a powder charge.
It's hard to beat a 185 gr. JHP, such as Zero, at 50 yards with your powder and load range.
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Post by Cmysix 5/5/2023, 5:35 pm

BE Mike wrote:
Cmysix wrote:I'm using 4.5-4.7 Hercules BE to propel a 230 grn RN
Dang, that's some old powder! Very Happy
15 pound round metal keg, shoots like it was made yesterday
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Post by PMcfall 5/5/2023, 7:49 pm

Orion wrote:
"wish I could shoot 3.5-4.0 of BE or even WST, but my LBC with a 14# spring doesn't cycle them with that low of a powder charge.”


As suggested by someone else, it is as simple as changing to a lighter weght spring!  I use 10-11 lb recoil springs in my slide mounted dot pistols.
Phil
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Post by Orion 5/6/2023, 9:19 am

PMcfall wrote:As suggested by someone else, it is as simple as changing to a lighter weght spring!  I use 10-11 lb recoil springs in my slide mounted dot pistols.
Phil

I’ve changed it out with a 10 lb Wolf spring before, no go.
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Post by PMcfall 5/6/2023, 9:21 am

What went wrong?
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Post by Orion 5/6/2023, 3:12 pm

I changed out my brass using only once fired federal gold match brass and decreased the BE powder charge down to 4.2. Group of ten looks better, but I’m not sure why I’m getting 2/10 outliers.

https://i.servimg.com/u/f45/16/74/72/54/img_8110.jpg
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Post by PMcfall 5/6/2023, 3:30 pm

Could be any number of reasons.  First thing I would do is to weigh the bullets in case there are heavyweight or lightweight bullets.  Save them for the short line.  Were the out of group shots first or last shot rounds?  And finally, you are shooting them off the bench not a Ransom Rest, right?  If so, there could be the flyers.
Phil
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Post by Colt711 5/16/2023, 5:22 pm

How many rounds have been put through the gun? Is it tight? Is it time for LB to test it?

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