![]() ![]() What charge weight was that? 2850 is incredibly slow. Can someone give me a good starting length, or should I always start with the SAAMI spec? I've been reading that the Bergers like to be in the lands, or a decent jump. If possible, I would like to use one of the powders I have on hand.Ģ. Which powder? I've got H335 and IMR 4064 on hand, as well as some Benchmark, TAC, Varget and IMR 4895. Either way, that's not important right now.ġ. I'm not sure that's the correct term, as the bottom of the rifle drops out and it has a spring attached to the follower. I have an over all length gauge, but I believe I will be limited by the length of the mag well. I've got Hornady once fired brass and CCI LRPs, and a box of 87 Grain Hunting VLDs that are supposed to be here tomorrow. ![]() I still use it on whitetails to this day and now I am going to start reloading for it. I've got a Winchester Model 70 Youth Ranger that my Dad bought for me back in the mid 90s. This is my approach when trying a powder for which I can not find data and I always combine this with a chronograph keeping a close eye on spikes or erratic numbers combined with careful examination of the brass after each shot.I've got a question for the 243 guys. Your results most likely will be unsatisfactory accuracy wise but might be target plinking loads. I keep IMR 30 on the shelf along with Unique specifically because there is little outside of the big magnums I can't load with these 3 if I have to. 243 but that does not mean it won't work. IMR3031 is not a powder that is recommended with the. Most, but not all, do not recommend a reduction of more than 20% under starting weight and there is really no need unless you are going to a fast powder like Red Dot for target loads using cast and possibly a filler. Also keep in mind that some powders specifically warn against reducing charge weights below published data (H110 comes to mind). Using this information and remembering that these are Starting charges which would require a Reduction in charge weight to start of 10% as we are using a different powder with the same approximate burn rate and different powders exhibit different characteristics when reducing or increasing burn rate, a reasonable starting point keeping this in mind can be deduced using the extra measure of reduction for safety and the closest slower powder using the 100gr jacketed bullet and the even lower charge weights using cast bullets. Looking at the recommended starting weights for Varget we see: I also notice that with Varget, once the load has dropped to 31gr it remains steady. I find Varget data with this bullet and since Varget is about the same burn rate (not the same powder so keep this in mind) I look backwards over bullet weights and notice the charge weight in grs goes up as the bullet gets lighter. Keeping this in mind, I look at a reloading powder burn chart and published data. H4895 using a 100gr Jacket gives a Max of 33gr So, H4895 using a 100gr cast gives a Max of 24.0gr H4227 is faster than R7 and gives a Max of 17gr at 1926fps. These 2 powders neatly bracket 3031 in burn rate. I do not recommend anyone follow this and if they do, they do so at their own riskįrom and old reference book and a source online I have used with good results, 100gr cast gives the following: This is my approach when trying a powder for which I can not find data and I always combine this with a chronograph keeping a close eye on spikes or erratic numbers combined with careful examination of the brass after each shot. ![]()
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