obiwankabaldi Posted July 2, 2017 Share Posted July 2, 2017 Had an unusual experience. shooting. I was shooting my normal reloads that have always seemed plenty accurate yesterday and had to switch to Blazer aluminum cased ammo (talking 9mm). As soon as I changed up I noticed a drastic tightening of my groups. Same distance bullet weight, etc. What might be the answer regarding this. I was certainly surprised to see such a difference. Link to comment Share on other sites More sharing options...
Bkreutz Posted July 2, 2017 Share Posted July 2, 2017 Check the crimp on your handloads. Too much crimp will adversely affect accuracy. Link to comment Share on other sites More sharing options...
Out of Ammo Posted July 2, 2017 Share Posted July 2, 2017 So may factors that could have caused this. Length of bullet, bullet type, length of bullet, load variations, etc. Link to comment Share on other sites More sharing options...
IDescribe Posted July 2, 2017 Share Posted July 2, 2017 This question can't be answered definitively. But it can't even be half-ass attempted if you don't provide the details of your load. Link to comment Share on other sites More sharing options...
GrumpyOne Posted July 2, 2017 Share Posted July 2, 2017 What's the velocity of your reloads versus the velocity of the Blazer? Could be crimp, could be powder, could be just about anything. Link to comment Share on other sites More sharing options...
bowenbuilt Posted July 2, 2017 Share Posted July 2, 2017 (edited) Hell, I know the answer to this one and don't even need to hear about his load. Your gun likes Blazer better than your reloads. Now....wasn't that easy? Try to match the Blazer loads as close as possible with your reloads and I be you get close to the same accuracy. Not exactly the same could be better, could be worse, that's why we have all the fun of experimentation. Edited July 2, 2017 by bowenbuilt Link to comment Share on other sites More sharing options...
obiwankabaldi Posted July 2, 2017 Author Share Posted July 2, 2017 41 minutes ago, bowenbuilt said: Hell, I know the answer to this one and don't even need to hear about his load. Your gun likes Blazer better than your reloads. Now....wasn't that easy? Try to match the Blazer loads as close as possible with your reloads and I be you get close to the same accuracy. Not exactly the same could be better, could be worse, that's why we have all the fun of experimentation. Probably the best answer. Looking up specs for that Blazer ammo now and might run a batch to match it as close as I can. However i am sure that like many said could be anything. Bullet, powder, charge, crimp. I guess I was just curious if there was any one thing that someone knows about that is outstanding. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted July 2, 2017 Share Posted July 2, 2017 4 hours ago, IDescribe said: This question can't even be half-ass attempted if you don't provide the details of your load. Have to agree with Idescribe .... Link to comment Share on other sites More sharing options...
TDA Posted July 2, 2017 Share Posted July 2, 2017 Start with velocity. Chrono some Blazer and then chrono some of your hand loads. I'll bet your hand loads are slower. Link to comment Share on other sites More sharing options...
wrench459 Posted July 3, 2017 Share Posted July 3, 2017 Ain't reloading fun. Link to comment Share on other sites More sharing options...
4n2t0 Posted July 3, 2017 Share Posted July 3, 2017 (edited) There are too many factors to be certain but I would side with TDA. Doughnuts to dollars it's velocity related. The factory ammo is travelling faster than the OP's own loads. Edited July 3, 2017 by 4n2t0 Link to comment Share on other sites More sharing options...
bowenbuilt Posted July 3, 2017 Share Posted July 3, 2017 12 hours ago, Hi-Power Jack said: Have to agree with Idescribe .... I agree with what everyone said. I just had a moment but I feel better now. Link to comment Share on other sites More sharing options...
michael.flitcraft Posted July 3, 2017 Share Posted July 3, 2017 Doing ladders with a chrono and shooting for groups simultaneously helps a lot to sort this out. Otherwise do 5 shot groups with each incriminate in the loading data for accuracy and stick with the best group for your load. There's always the possibility you're using a powder that isn't optimal for your caliber or bullet weight. I have noticed that the lower my standard deviation is on velocity, the tighter the groups are - and it can go from 25 to 7 fps sd within .3 grains. I've also noted that I tend to get 2 tight sd loads per powder/bullet - usually one low and another higher charged. The higher charged tight sd load tends to shoot better in my pistols. Also of note - my HK and Sig like different charges for the same 135gr rn bullet. Something to think of if you want to make one load for multiple firearms (either compromise for both, or have 2 best loads, or load for your favorite and the other gets sub-optimal loads) Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
IDescribe Posted July 3, 2017 Share Posted July 3, 2017 (edited) 20 hours ago, obiwankabaldi said: I guess I was just curious if there was any one thing that someone knows about that is outstanding. There may be. BUT if you don't provide the details of your load, no one knows what they know that applies to your situation. If I were asking this question, I would at minimum include this data: Pistol Used Bullet Make and Model, to include weight and profile Powder and Powder Charge OAL Crimp measurement and crimp die used So for me, it might look something like this: The pistol was CZ-75 Shadow. The load was a Precision Delta 124gr JHP loaded with 3.9gr of Bullseye. OAL is 1.110, and crimp is .378 with a Redding taper crimp die. That gives people a starting point. If you are using plated bullets, and you don't know what your crimp is, I already know the answer. Same for coated lead. Or it could be that you're using plated, and the FMJ bullets Blazer is using are simply better bullets, and you're never going to see equal accuracy from plated. Or it could be that you've done no tuning, and you're in a velocity range that's going to produce bad accuracy in that specific pistol with that powder. Or it could be that you're using coated lead bullets with a Lee FCD. Or it could be that you're using undersized bullets like Blue Bullets, and they don't fit your barrel well. It could be ALL sorts of things. But if you don't tell us what your load and pistol are, there is no way for us to speculate. Edited July 3, 2017 by IDescribe Link to comment Share on other sites More sharing options...
MemphisMechanic Posted July 3, 2017 Share Posted July 3, 2017 (edited) If you never played with the length and powder charge of your load in increments to find out what makes your gun like your reloads the best, this is the typical result. Most guys find an overall length all their guns like then figure out how much powder makes "about 130" power factor. This then becomes their production load. Oftentimes a somewhat hotter load,or a shorter/longer load, or changing powders, or an adjustment to the crimp, or a change to a .356 bullet instead of a .355... ... can result in much more accurate ammo. But until you do the testing for group size, you'll never know. And factory ammo will probably outperform your loads. Edited July 3, 2017 by MemphisMechanic Link to comment Share on other sites More sharing options...
lgh Posted July 5, 2017 Share Posted July 5, 2017 On 7/2/2017 at 2:33 PM, bowenbuilt said: Try to match the Blazer loads as close as possible with your reloads and I be you get close to the same accuracy. Check OAL of Blazer. Disassemble Blazer round. Weigh the bullet and check its profile. That's the bullet you want. Weigh the charge if you like and compare it with Lyman data for that bullet type. That MIGHT tell you what powder it is. Otherwise, use the Lyman data fro the best powder type and charge for that bullet. This will work. Link to comment Share on other sites More sharing options...
Service Desk Posted July 6, 2017 Share Posted July 6, 2017 Try a few boxes of Ammo from different manufacturers, you might find an even more accurate load..... Link to comment Share on other sites More sharing options...
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