Quickload help please

I am working up a load for my 6.5x55 and I was hoping someone could help me by running some numbers in quick load?

The load with best accuracy is a 123gr amax BC 0.510 with 45.5gr of AR2209 in PMC brass. Just trying to find out a ball park MV. Barrel is a standard 22" howa 1:8 twist but I do have a gunworks suppressor as well.

As a reference my old load was a 140gr accubond in the same brass using 43.0gr of AR2209 producing about 2540fps

On another note has anyone else had any experience with published BC of this projectile it seems a little optimistic.

Thanks!

@Tikka7mm08

Will also depend on CoL, but close enough to 2760 ft/sec, pressure peaking at 51kPSI. Looks like quite a good place to be if accuracy is also good. The 140gr load was milder than this with a fair bit of room to move should you have wanted to.

Thanks very much for that @Puffin! That's around where I was hoping.

I tried the 140gr up to ~45gr if I remember rightly but didn't get good accuracy before I got sticky bolt lift and ejector marks.

I see some of the loads other people run and wonder how they can get so much powder in, such high velocity without pressure signs. Maybe its my brass.

Quote:

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Originally Posted by sparky1000

Thanks very much for that @Puffin! That's around where I was hoping.

I tried the 140gr up to ~45gr if I remember rightly but didn't get good accuracy before I got sticky bolt lift and ejector marks.

I see some of the loads other people run and wonder how they can get so much powder in, such high velocity without pressure signs. Maybe its my brass.

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I'm at 46.5gr 2209 with the 143g eldx, great accuracy and 2780 fps. Running long coal in lapua brass.

Quote:

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Originally Posted by sparky1000

I am working up a load for my 6.5x55 and I was hoping someone could help me by running some numbers in quick load?

The load with best accuracy is a 123gr amax BC 0.510 with 45.5gr of AR2209 in PMC brass. Just trying to find out a ball park MV. Barrel is a standard 22" howa 1:8 twist but I do have a gunworks suppressor as well.

As a reference my old load was a 140gr accubond in the same brass using 43.0gr of AR2209 producing about 2540fps

On another note has anyone else had any experience with published BC of this projectile it seems a little optimistic.

Thanks!

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Litz, 123 Amax, G1 BC .467, .239 G7

Quote:

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Originally Posted by sparky1000

Thanks very much for that @Puffin! That's around where I was hoping.

I tried the 140gr up to ~45gr if I remember rightly but didn't get good accuracy before I got sticky bolt lift and ejector marks.

I see some of the loads other people run and wonder how they can get so much powder in, such high velocity without pressure signs. Maybe its my brass.

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Hi mate, what rifle is this in? I too use 46.5 of 2209 with the old but better 140 Amax but it's a modern 6.5x55 and I did start at 45.5 and loaded up. No sign of pressure in lapua brass.


Sent from my iPhone using Tapatalk

Thanks for the responses everyone!

@Kiwi Greg - That BC looks more realistic for a 123gr projectile!

@Danny & @GWH - I have a Howa 1500 with a full length 22" Barrel and a Gunworks suppressor. What rifles are you both running? I have seen a lot of people with Tikka T3's that seem to be able to get incredible speeds from the 6.5x55 but I am unsure if its a stronger action or if its because they are using Lapua Brass. I thought when I was getting my PMC brass I was getting a good deal... Maybe that is whats holding me back.

I have tried the 140gr amax as well, accuracy sweet spot was 44.0gr and pressure signs at 46.0gr (Flattening primers, ejector marks).

I will check my Overall length and my Length to ogive tonight when I get home and clear the way to my reloading bench.

Quote:

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Originally Posted by sparky1000

Thanks for the responses everyone!

@Kiwi Greg - That BC looks more realistic for a 123gr projectile!

@Danny & @GWH - I have a Howa 1500 with a full length 22" Barrel and a Gunworks suppressor. What rifles are you both running? I have seen a lot of people with Tikka T3's that seem to be able to get incredible speeds from the 6.5x55 but I am unsure if its a stronger action or if its because they are using Lapua Brass. I thought when I was getting my PMC brass I was getting a good deal... Maybe that is whats holding me back.

I have tried the 140gr amax as well, accuracy sweet spot was 44.0gr and pressure signs at 46.0gr (Flattening primers, ejector marks).

I will check my Overall length and my Length to ogive tonight when I get home and clear the way to my reloading bench.

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Yeah mines a T3 and Lapua brass.

Just checked my COAL, its 2.937" give or take 0.001" its got quite a jump to the rifling, but this little amax doesnt seem to mind.

The Accubond load was 3.050" 77.48mm it was before I had my Hornady OAL gauge, so not sure how far off the lands it was.