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Post by thehartofthings on Jun 4, 2016 16:16:01 GMT -8
I have a rcbs 95 grain gas check spire point mold. Was tinkering with the idea of a reduced plinking round but it seems the profile of the bullet isn't like by the lbc chamber as it gets set back on loading from a magazine. Any experience with lead yet from this round
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Post by GLSHOOTER on Jun 5, 2016 7:22:54 GMT -8
If it is setting back you need more neck tension. Plain and simple issue. You could also shorten the loaded length and at times this helps along with tweaking the lips to present the cartridge higher out of the magazine. None the less neck tension is the major issue here IMHO.
Greg
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Post by tonythetiger on Jun 5, 2016 13:59:56 GMT -8
Are they setting back from the violence of being loaded from a magazine or because the bullet profile has a fat ogive like most lead rifle bullet molds? If the chamber was designed around VLD's it makes me wonder if your bullets are just hitting the rifling early because of their shape.
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Post by GLSHOOTER on Jun 5, 2016 14:21:32 GMT -8
Are they setting back from the violence of being loaded from a magazine or because the bullet profile has a fat ogive like most lead rifle bullet molds? If the chamber was designed around VLD's it makes me wonder if your bullets are just hitting the rifling early because of their shape. One would hope that distance to lands has been determined before blindly seating an unknown bullet. You are spot on on bulet shape/ogive. A 125 in that A-30 can be seated to 2.258 yet a 110 can only go 2.008. Just going with a 2.258 or so autimaticaly would be a road to disaster or at least some pressure issues in some cases. Greg |
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Post by thehartofthings on Jun 5, 2016 16:42:56 GMT -8
No I have not personally measured the distance to the rifling although I have the specs from BHW. I was doing a dummy round, no powder or primer. I think it's the ogive of the bullet, and if seated back far enough to relieve the problem it looks real short and odd. I was seeking some first hand experience with a cast bullet in the round to see if it's even worth the hassle. I love my 243 and 264 lbc. Both have been submitted. .5 moa with everything I've shot but Im a caster and would like to be able to shoot it for fun
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Post by GLSHOOTER on Jun 5, 2016 16:58:12 GMT -8
No I have not personally measured the distance to the rifling although I have the specs from BHW. I was doing a dummy round, no powder or primer. I think it's the ogive of the bullet, and if seated back far enough to relieve the problem it looks real short and odd. I was seeking some first hand experience with a cast bullet in the round to see if it's even worth the hassle. I love my 243 and 264 lbc. Both have been submitted. .5 moa with everything I've shot but Im a caster and would like to be able to shoot it for fun You will get zilch on this one I suspect. With lead bullet molds all over the place and a severe lack of Pb shooters you won't get much data. Looks don't mean anything once you look at that 110 RN in the A-30. As long as your ogive is not back in the case mouth you will be GTG. With lead you can give up some case capacity as you aren't trying to push them Mach 3. You'll have to find the lands with a tool or splitting a case neck and going for it. I can't look at a reamer print and decide what goes as there are several variables at work including bolt face depth. Greg |
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Post by wfa on Jul 31, 2016 12:02:56 GMT -8
Cast bullets in the BHW barrel adds a new twist (no pun intended). I've found that you need a bullet with a LONG bearing surface to get them to shoot accurately (and they will). If you're used to "bore ride" noses, they don't work, or at least not in the two BHW barrels I've tried them in (264LBC and 300BLK). Keep velocity in the 15-1700 fps range (I cast wheel weights with just enough tin to get good mold fill). As usual, RL-7 seems to be the magic propellant, with Norma 200 also working (but hard to find).
Don't know if this helps any or if you're even still on the forum, but "it can be done".
Walt
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Post by GLSHOOTER on Jul 31, 2016 12:06:39 GMT -8
Cast bullets in the BHW barrel adds a new twist (no pun intended). I've found that you need a bullet with a LONG bearing surface to get them to shoot accurately (and they will). If you're used to "bore ride" noses, they don't work, or at least not in the two BHW barrels I've tried them in (264LBC and 300BLK). Keep velocity in the 15-1700 fps range (I cast wheel weights with just enough tin to get good mold fill). As usual, RL-7 seems to be the magic propellant, with Norma 200 also working (but hard to find). Don't know if this helps any or if you're even still on the forum, but "it can be done". Walt AS slick as the bores are that makes sense. The OP was online here last week. BTW Greh |
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