Bullseye Powder 50y Load

• 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
  

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.



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. 

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

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

Cmysix wrote:I'm using 4.5-4.7 Hercules BE to propel a 230 grn RN

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.

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!

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