auquhollie Posted July 8, 2009 Report Share Posted July 8, 2009 I got a shout from a mate the other night. He has just bought a knew RPA in 243win. He was asking for some load data. Needless to say i ended up out at his range trying to work up some loads. We got a load with 70 BT's & N160 but could i get a load for the 87grain V Max !!! We tried a few things but not much better than an Inch. Has anyone got any tips or loads for an RPA 243 win and 87 v max's/N160 ?????. Ads Link to comment Share on other sites More sharing options...
1967spud Posted July 8, 2009 Report Share Posted July 8, 2009 I got a shout from a mate the other night. He has just bought a knew RPA in 243win. He was asking for some load data. Needless to say i ended up out at his range trying to work up some loads. We got a load with 70 BT's & N160 but could i get a load for the 87grain V Max !!! We tried a few things but not much better than an Inch. Has anyone got any tips or loads for an RPA 243 win and 87 v max's/N160 ?????. Ads http://www.reloadersnest.com/query_bw.asp?...BulletWeight=87 Link to comment Share on other sites More sharing options...
1967spud Posted July 8, 2009 Report Share Posted July 8, 2009 hope that helps, you need to just click on the load number on the right for the actuall data Link to comment Share on other sites More sharing options...
auquhollie Posted July 8, 2009 Author Report Share Posted July 8, 2009 Cheers Spud. Been on there but it doesnt show where they seat the tips. On or off the lands etc... Ads Link to comment Share on other sites More sharing options...
1967spud Posted July 8, 2009 Report Share Posted July 8, 2009 youll have to work that one out your self mate try starting 10 thou off the lands, every rifle can shoot differently with alteration to seating depth even two rifles the same make and calibre Link to comment Share on other sites More sharing options...
1967spud Posted July 8, 2009 Report Share Posted July 8, 2009 have a look again at that link ads , they are stating there col measurement for the loading but that may differ in your rifle Link to comment Share on other sites More sharing options...
menial 1 Posted July 8, 2009 Report Share Posted July 8, 2009 I'd start with 42.5gr Viht 160 with the bullet set 40 thou out if the chamber is not too tight. If you work up .3gr at a time I would expect a decent accuracy node around 43.1gr or 43.4gr with a muzzle velocity of around 3050fps. Pete. Link to comment Share on other sites More sharing options...
auquhollie Posted July 8, 2009 Author Report Share Posted July 8, 2009 Cheers lads. What i normally do is pick a medium powder charge and use that to start with. I seat 10 thow off the lands and work out in 10 thow increments. When i hit an accurate load i start to go up the charges in 1/5 grain increments. Always has worked but the RPA doesnt seem to be playing ball. Annoying thing is it shoots federal power shocks into the same hole. Ads Link to comment Share on other sites More sharing options...
menial 1 Posted July 8, 2009 Report Share Posted July 8, 2009 Are the power shocks 100gr Ads, and what twist is the barrel? Link to comment Share on other sites More sharing options...
auquhollie Posted July 8, 2009 Author Report Share Posted July 8, 2009 Are the power shocks 100gr Ads, and what twist is the barrel? Im almost sure they were 70 grainers. The twist im guessing is a 1n14. Not 100% on that either though Ads Link to comment Share on other sites More sharing options...
menial 1 Posted July 8, 2009 Report Share Posted July 8, 2009 That would be a very slow twist for.243, more likely to be 1in10 or 1in12, most common weight sold in Power Shocks is 100gr. Pete. Link to comment Share on other sites More sharing options...
auquhollie Posted July 8, 2009 Author Report Share Posted July 8, 2009 You could be right about the twist. The feds were deffo 70gr though. Ads Link to comment Share on other sites More sharing options...
Guest varmartin Posted July 9, 2009 Report Share Posted July 9, 2009 Ads...87 Vmax can be funny beggers to get to shoot ....usually down to a bad batch of heads .......try them in another rifle perhaps ? Link to comment Share on other sites More sharing options...
mildot Posted July 9, 2009 Report Share Posted July 9, 2009 I think you may find the RPA is a 1-9" twist! thats what thir standard twist is. As i was gunna buy one. Ive found with most of my rifles like to be loaded at sammi spec length. Load at standard sammi spec length with different loads and then at max mag length with different weights. see which give best accuracy and work from there. I always go up in .5gn at a time to save bullets and powder then when you find the accurate one try .3 either side. etc. Link to comment Share on other sites More sharing options...
menial 1 Posted July 9, 2009 Report Share Posted July 9, 2009 Have a look on this link Ads, it'll tell you what the twist rate is depending on which model your mate has bought. The hunting rifles are 1in10 but others have various twist rates. http://www.rpainternational.co.uk/rifles.asp Pete. Link to comment Share on other sites More sharing options...
v-max Posted July 9, 2009 Report Share Posted July 9, 2009 I know you are looking for N160 data but i know fact that 36g-37g Varget in 87g v-max was outstanding in a 1-10twist. Link to comment Share on other sites More sharing options...
grahamfarmer Posted July 9, 2009 Report Share Posted July 9, 2009 hi guys . 37 grains of varget in a lapau case with brprimer with a 87 grain vmax is the dogs danglies in my howa can go up a bit more but group still the same size and the 37 is in the middle when ladder tested so cant see the point in wasting powder or burning anymore than i need . graham. Link to comment Share on other sites More sharing options...
auquhollie Posted July 9, 2009 Author Report Share Posted July 9, 2009 hi guys . 37 grains of varget in a lapau case with brprimer with a 87 grain vmax is the dogs danglies in my howa can go up a bit more but group still the same size and the 37 is in the middle when ladder tested so cant see the point in wasting powder or burning anymore than i need . graham. Graham, How far off the lands is that load ?. ATB Ads Link to comment Share on other sites More sharing options...
grahamfarmer Posted July 10, 2009 Report Share Posted July 10, 2009 hi ads, new rifle and checked with oal gauge and sammi spec to the olgive puts it 25 thou short did load a few down to 10 thou off but didnt gain any accuracy also had a few shot at 50 thou off and they where out to 1.5 " group from .5 " . always tend to load on the safe side so 25 thou off does give small safety margin as loaded to touching doesnt Give any pressure signs but group is out to 1" . some times wonder if we all go over the top a bit with seating depth especially if only varmint shooting but can see the point of tracking throat erosion so accuracy can be main tained most of my home loads are just neck cleaned with a rag and some brasso stubon carbon sees a bit of tyre buffer or brake cleaner employed then wire brush on inside with cordless drill clampe to bench then neck sized and trimmed to lenght if required . graham. Link to comment Share on other sites More sharing options...
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