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Posted: 12/13/2013 11:09:37 AM EST
Following the load data given out by Ramshot, loaded some 55g Hornady Sp at 21.6g. When I fired them from my 6" barrel pistol it short stroked, shell ejected but failed to pick up the next round from the mag.

When I loaded these, I was a little concerned about the data given, 21.6g for 55g SP, and 22.5g for 62g FMJ. Seemed contrary to my previous experience with pistol loads,, heavier bullets used less powder. figured the shorter OAL made a difference.

My question,, what increments should I work up with on the powder?
Link Posted: 12/13/2013 11:14:13 AM EST
[Last Edit: 12/13/2013 11:16:39 AM EST by truculenity]
load sounds way under powder

sierra (conservative) recommends start loads @ 24.7gr TAC for 223 in an AR.

I have no guidance for a pistol....
Link Posted: 12/13/2013 11:14:53 AM EST
.5 grain. 21.6 is low for a longer barrel. I'd start at 23.0. JMO, I don't have a AR pistol.
Link Posted: 12/13/2013 12:57:16 PM EST
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Originally Posted By glorifiedG:
.5 grain. 21.6 is low for a longer barrel. I'd start at 23.0. JMO, I don't have a AR pistol.
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This. Ramshot/accurate has data on their website for free.
Link Posted: 12/13/2013 1:29:06 PM EST
Originally Posted By bsmithaert1:
Following the load data given out by Ramshot, loaded some 55g Hornady Sp at 21.6g. When I fired them from my 6" barrel pistol it short stroked, shell ejected but failed to pick up the next round from the mag.

When I loaded these, I was a little concerned about the data given, 21.6g for 55g SP, and 22.5g for 62g FMJ. Seemed contrary to my previous experience with pistol loads,, heavier bullets used less powder. figured the shorter OAL made a difference.

My question,, what increments should I work up with on the powder?
View Quote


You may be looking at the load data for an SPSX bullet (Soft Point Super Explosive)? That's showing 21.6gr-24.0gr.
I load my Hornady SP (soft points) the same or very slightly lighter than Hornady FMJ-BTs (up to half a gram). Hornady 55gr FMJ-BT w/TAC ranges from 23.2gr-25.8gr.

I'm guessing you're way low on that load.
SBRs should be fine with regular rifle loads, but not sure with your pistol barrel how much burn rate (and how fast/how much gas is generated) may come into play here... ??
I'd start with a higher load, or better yet, give Hornady or Ramshot a call or email and see what they say.

Link Posted: 12/13/2013 2:43:06 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By rtpguy:


You may be looking at the load data for an SPSX bullet (Soft Point Super Explosive)? That's showing 21.6gr-24.0gr.
I load my Hornady SP (soft points) the same or very slightly lighter than Hornady FMJ-BTs (up to half a gram). Hornady 55gr FMJ-BT w/TAC ranges from 23.2gr-25.8gr.

I'm guessing you're way low on that load.
SBRs should be fine with regular rifle loads, but not sure with your pistol barrel how much burn rate (and how fast/how much gas is generated) may come into play here... ??
I'd start with a higher load, or better yet, give Hornady or Ramshot a call or email and see what they say.

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View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By rtpguy:
Originally Posted By bsmithaert1:
Following the load data given out by Ramshot, loaded some 55g Hornady Sp at 21.6g. When I fired them from my 6" barrel pistol it short stroked, shell ejected but failed to pick up the next round from the mag.

When I loaded these, I was a little concerned about the data given, 21.6g for 55g SP, and 22.5g for 62g FMJ. Seemed contrary to my previous experience with pistol loads,, heavier bullets used less powder. figured the shorter OAL made a difference.

My question,, what increments should I work up with on the powder?


You may be looking at the load data for an SPSX bullet (Soft Point Super Explosive)? That's showing 21.6gr-24.0gr.
I load my Hornady SP (soft points) the same or very slightly lighter than Hornady FMJ-BTs (up to half a gram). Hornady 55gr FMJ-BT w/TAC ranges from 23.2gr-25.8gr.

I'm guessing you're way low on that load.
SBRs should be fine with regular rifle loads, but not sure with your pistol barrel how much burn rate (and how fast/how much gas is generated) may come into play here... ??
I'd start with a higher load, or better yet, give Hornady or Ramshot a call or email and see what they say.



That's it right there. I used the data for SPSX. The SP fooled me.
I had asked before about rifle/SBR loads and was informed no difference, so I'll start at the 55g FMJ load and go from there. 23.2g sounds better following what I have experience with(pistol ammo), heavier bullets take less powder.

Gentlemen, I thank you for your help.
Link Posted: 12/13/2013 6:37:47 PM EST
Link Posted: 12/14/2013 11:28:42 AM EST
Dryflsah's load for his FMJ will very likely be too hot for the softer 55 SP. Like he says, work up and find the sweet spot. I use 24.5 for both FMJ's and SP's in 55 gr. bullet loads. Very accurate, easy on brass and cycles all variations of my AR's. You can go for more velocity...just work up to it as pointed out.
Link Posted: 12/14/2013 1:56:48 PM EST
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