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Blazer-6

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About Blazer-6

  • Birthday 03/01/1983

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  • Gender
    Male
  • Location
    Compostela Valley, Mindanao, Philippines
  • Interests
    the ocean. guns, cooking, football, reading
  • Real Name
    Ernest Carolina

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  1. Sadly, I don't have a quickload 3.6 to those who have it, please answer these inquiries I have. I know most are beyond the limit, but they will help me establish something. I need to know how much of these vihtavuori powders is needed to achieve 1,160 FPS with a sierra 180 gr. JHP or similar, the COAL being 1.150". please indicate the corresponding pressure. grains and PSI to achieve 1,160 fps @ 1.150" length for: 1) N340 2) 3N37 3) N350 4) 3N38 Also, please also provide me with amount in grains of these for these powders needed to achieve the pressure limit @ 1.126" and 1.150" COAL. max load @ 1.126" and 1.150" for: 1) N340 2) 3N37 3) N350 4) 3N38 Thank you very much. they shall help me a lot.
  2. A shot a competition in standard division with 182 pf, just because i didn't know of any 200 grain + N340 combo yet. I load a 208.8 PF 180 grain JHP "wilderness load" which is still shootable in pairs.
  3. sounds like i need to back up a bit. does watching the primers provide a reasonably reliable warning for overpressure? also, if a casing fails to extract, what does that indicate? i've had it once when working up a .40 load. I backed up .7 of a grain after it happened.
  4. could I please ask the mods to change my title to "right place to start developing a hot 9mm short barrel load" from "right place to start a developing a hot 9mm short barrel load"
  5. my combination is viht N340, 124 gr XTPs. new starline brass, CCI primers. platform, HK P2000SK 3.26" poly barrel. I figured 3N37 might be to slow to optimize in a short barrel, coming from the same logic why Speer might have produced a spicific "short barrel" load. my target velocity: 1,230 fps. (sound achievable?) Initial plan, start from 5.1 grains, work up to 6.1 Also, I'm confused with what COAL to work on. Sierra lists 124 JHP COAL to ba 1.075" while Viht places it at 1.130". I also read 1.100" is ideal for hot XTPs. purpose: military / outdoor Being military, I know I should be more concerned with real world results, but i am confident (obsessed!) with numbers. For a USP40, I have developed a slightly long sierra 180 grain .40 load clocking a consistent 1,160 fps with moderate recoil, and a similar 1,100 fps suppressed variant. With the former, I have downed a 120 lb sambar 3 yards from where it stood, shot from 60 yds. It was a clean lung-aorta shot from a right slightly rear quarter, exited front of left shoulder without clipping either shoulder bone. with the mentioned target numbers with the 9mm XTP, I will be about as confident carrying the tiny by comparison P2000SK. Please comment / suggest on my setup and start point. Thank You.
  6. They say the 2 spring setup is the USP's tragic flaw. Still i'm looking for a way to circumvent that. i have a theory on using a lighter spring, but there are some sources of confusion why i am not totally sure of what i'm thinking. The USP is unique, but this isn't necessarily a weakness i believe. The 2nd spring or buffer spring is said to make the USP jumpy like a pogo stick, making follow up shots a gamble. I notice it myself, that figure 8 as some describe it. i then read bruce gray, who used to compete for HK, say is it's more of a factor with 9mm, less with .40 major loads. Ive heard more gentlemen claim this since and I began to think why. i thought maybe the 40 is bottoming out the harder 2nd spring more consistently, while the 9mm doesn't, hence the inconsistency in sight return. from this, I postulated putting a 10lb recoil spring to my USP 40 will translate to more consistency. I also saw at least one claim of a USP expert .40 shoots flatter with a 10 LB spring in place. when i asked Lukas Koukal, aCzech gentleman who modded his USP quite a bit and competes with it, his theory is that the softer spring will make the bouncing worse, the buffer becoming more engaged. Lukas dealt with the problem by replacing the buffer spring with a solid cylinder which wast so simple. Bruce Gray also said a way to deal with it, going fully sprung so as not to give the buffer a chance to compress, and this he said made him considerably fast. now i'm confused. This doesn't explain why it was also observed not just by Bruce that the bouncing is less with a major .40 which is supposed to be compressing the buffer spring more. thus, i went with my bottoming out theory, going for the 10lb. Right now I haven't had the chance to compare shooting the 2 springs side by side (the stock 12lb and the 10lb currently in my USP) because it's too difficult to replace the spring. the spare recoil assembly i'm planning in order to facilitate quick replacement would have been perfect but it's taking too long. Shooting the 10lb spring makes me feel i'm a tad faster but this might be caused by my confidence in my theory. Up to now I don't even know if that hard buffer is bottoming out. from what i know Lukas' expert suffered FTEs when he first converted to the solid steel "buffer" without yet considering the 3mm slide movement lost. There is still a wobble in mine now, I can't detect dipping anymore, and the slide doesn't stay back in the end of the cycle as long as a lightly sprung 1911 it seems. Going even further on this is to test a USP with a custom 7-8 lb spring. for all we know it might even turn into an excellent competition weapon. This considering that a hard spring translates to more perceived recoil because the felt recoil is spread over a longer time lapse, making "softer is better" the current convention now in competition. This of course is accompanied by a caution that too soft will wreck your frame. For the USP this is where I think the buffer spring might come in as advantage instead of a weakness, allowing springs considered too light for other platforms to be used without battering the frame - thus potentially giving it excellent recoil qualities and faster follow up shots. there's a light "recoil master" for 9mm, but the USP's system is unique, it's unlike anything. That buffer is harder and shorter than comparable 2 spring setups, and the whole assembly moves. who knows what secrets that might hold. it's a very strong, durable firearm, and that buffer is hard, that's what I know. This is also the reason I chose not to go Lukas' way. this is because it will take away the USP's uniqueness which has yet to be exploited in my opinion. Gunsmiths and experts please help me verify this theory.
  7. factory ammo is sure expensive here, the handloads i make are from new shells. im military btw. the matches here are frequent, and convinient, the night life - phenomenal. guns cost 200-250%
  8. I shoot an HK USP tactical 40 in IPSC Major - 4.9" polygonal barrel. My chrono readings don't look right at all. I failed in different chronos with loads that pass with friends' para ords. I loaded 1.150" w/ 4.8 N320 and 180 gr. moly and got only 919-920 FPS (targeting 950 fps for 170PF). quickload already calls that overpressure. Then, i loaded JHPs for carry and worked up my load from the VV N340 start load from their manual. I continued to work up from the max published load of 6.1 gr because the primers were still very healthy and i'm loading to a non standard 1.150" anyway. I got to 7.5 grains before any sign of primer flattening and cratering! i made some 7.2 grain loads and the primers were quite healthy, chronoed them @ 1100 FPS. quickload already places that load at 1290 fps and something like 60000+ psi pressure. im getting 1100 fps and normal primers with a 7.2 load! VV limit is at 6.1, sierra at 6.3 grains! what is this? Is my barrel leaking or something?
  9. oh yes, of course, its a 6" hehe. sorry, 6" not allowed in IPSC standard.
  10. be careful with the .40, inspect brass well, measure OAL well, and watch for pressure signs. Vihtavuori N340 or Ramshot Silhouette make perfect powders for beginners in the .40. very forgiving in standard 1.126-1.135 length. Faster N320s and similar will always have you exceed manufacturer listed max loads to make major, and you will have to play with OAL. finicky stuff.
  11. it makes 167 PF. i use a 180 grain to be in the safe side. i still think N320 is too fast for 200 grain even at 1.180". And yet this can still happen... but maybe it would have been worse if it had been a 200 grain loaded.. remember, pressure increases exponentially, not linearly with a reduced case volume - this, coupled with a heavier, slower to accelerate bullet makes for a much higher pressure even w/ only 4.1.
  12. Unless your shooting open with a comp, the way to go for IPSC style competition is heavier bullets with fast powders. some even take it to dangerous levels, like 205 grainers propelled by clays. 200 grain over N320 or similarly fast is common among GMs. 180 is good to go, but 165 - if 65 grain worked for ipsc standard or USPSA limited, a lot of the top dogs would have stuck with it. i like the sierra bullets for their agressive expansion, perfect for heavy bullets (180gr) with high 10mm velocities (1150fps) which would otherwise overpenetrate. they also are very accurate in higher to max pressures, but i found them to be erratic w/ lower pressure loads.
  13. i don't think it's possible to fire this pistol if even slightly out of battery, but i tried to put the case in again. it's strange, the slide actualy slams home fully with it, but part of the casing base is still exposed, up to that line above the hole. i looked at the blown case against other fired brass, but it's even a bit shorter. strange indeed. here are pics, the last one is a normal round in the chamber: Barrel drop as a preventative measure?
  14. hey there kabayan. i just looked at the chamber and it looks fine. clean as a whistle. i couldn't tell on which side the explosion was on. the pistol has some 2400 rounds through it
  15. thank you for the inputs KyroWebs. I got really scared. It's difficult to buy another HK with the salary of a 1st lieutenent here.
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