Ok, at 26.5 grains accuracy is fantastic but the velocity is lame. 27.5gr velocity somewhat acceptable and accuracy is " good enough". At 29.5 velocity is good but accuracy is all over the place. When seated .010" off its even worse at 2.280 coal. At 2.230 it does improve but still not good enough, as in 1.5". Ive got no signs whatsover of pressure now, primers are nice and tight...etc. My question is, has anyone found another " top end" node with this combo? At 30gr its compressed but Ive never tried it. My velocity was at 4000 also. Should I try noslers? Any input is appreciated very much. Also, this gun hates being seated near the lands, no matter what bullet, primer, or powder.
.223, h335 and 40gr vmax...accuracy no go
- Thread starter vmaxpro
- Start date
Ackman
Gold $$ Contributor
Not sure what combo you're talking about. But if you want specifics......
With AA2015 powder and 40BalTip:
27.9 = 3977
28.2 = 4030
28.5 = 4096
29.0 = 4190
These all shoot about .3" to low .4"s. Loads are fine in MY gun.....25" barrel, 14" twist. Also IMI brass, 7-1/2BR, Lee lube.
EDIT: This is a 223AI, not a std. 223.
With AA2015 powder and 40BalTip:
27.9 = 3977
28.2 = 4030
28.5 = 4096
29.0 = 4190
These all shoot about .3" to low .4"s. Loads are fine in MY gun.....25" barrel, 14" twist. Also IMI brass, 7-1/2BR, Lee lube.
EDIT: This is a 223AI, not a std. 223.
Hows that 2015 meter? How are those loads in the summer? I'll def consider trying it. H335 was working for me and now its not. Its a new lot. Even working up the load it didnt compare to my old lot. One more thing, do you recall your COL? I can touch the lands at 2.290 but it shoots terrible. My trailboss 35gr vmax loads are a mile away and 5 rounds @100 will touch.
Maybe its the powder if the accuracy is there but not the velocity try another powder. Before I ackley improved my 223 I was running H322 with 50 grain noslers with really good accuracy.
Hillbilly
Hillbilly
Ackman
Gold $$ Contributor
Well 2015's a stick powder, looks pretty much like Varget. I use an RCBS charge pro and metering isn't a problem. But was using 2015 long before ever getting a charge pro and ammunition has always been very accurate. Summer temps out shooting can be 100+ degrees but mostly it's 80's or 90's.
A 40BT just off the lands is about .170" down the neck. Overall length is 2.285".
I used H335 for years in the MIV and stopped because of heat sensitivity and sometimes big lot to lot variation. That variation is likely what made it stop working for you. Never used it in the 223/223AI because 2015 has always been very accurate and fast.
A 40BT just off the lands is about .170" down the neck. Overall length is 2.285".
I used H335 for years in the MIV and stopped because of heat sensitivity and sometimes big lot to lot variation. That variation is likely what made it stop working for you. Never used it in the 223/223AI because 2015 has always been very accurate and fast.
If accuracy is excellent at a certain speed then whats the worry? If ya hit what your aiming at why worry how fast the bullet is going? I don't get what the percieved problem is....
jonbearman
I live in new york state,how unfortunate !
I use h335 with outstanding accuracy but if it doesnt work then my fallback is benchmark. Is the vmax a boatail or flatbase? What twist rate is it? If it is a 1 in 9 I find flat base works better for me. How much neck tension are you running? Normally the top loads with h335 are not as good as less pressure loads.I never hotrod anything till I am sure it wont be better off at a lower pressure.I would also switch to a 53 grain match bullet to see if the gun will perform with real consistent bullets. What kind of gun and barrel is it?
Ackman
Gold $$ Contributor
vmaxpro,
My apologies. Those numbers I posted are for a 223AI, not a std. 223.
I have a couple std. 223's. Using the same brass/primer they shoot pretty much the same as the AI's only with less powder and less velocity. With 40gr bullets...........
The load in a 20" truck gun, 14" twist, very minimal chamber.....
27.5/VV133/40Vmax = 3895
In a 26" Shilen, 14" twist, well used barrel......
26.5/AA2015/40BT = 4010 - Accuracy in the mid .2"s
Low .3"s accuracy with VV133 and 40Vmax is from 26.5-27.5/133, no chrono on this. Should be fast.
The 42gr. Calhoon is also very accurate.
My apologies. Those numbers I posted are for a 223AI, not a std. 223.
I have a couple std. 223's. Using the same brass/primer they shoot pretty much the same as the AI's only with less powder and less velocity. With 40gr bullets...........
The load in a 20" truck gun, 14" twist, very minimal chamber.....
27.5/VV133/40Vmax = 3895
In a 26" Shilen, 14" twist, well used barrel......
26.5/AA2015/40BT = 4010 - Accuracy in the mid .2"s
Low .3"s accuracy with VV133 and 40Vmax is from 26.5-27.5/133, no chrono on this. Should be fast.
The 42gr. Calhoon is also very accurate.
Shot some ladder loads today. The 2015 did the best out of the 3. 8208 was ok but nothin to write home about. 27gr of 2015, 40gr NBT, 7.5 , lapua brass jumped .020" had low SD's and were 1/4-3/8's MOA. The Noslers def out shot the Hornadys in this case. The Vmax's did good, coming in at 3/4MOA.
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