This page contains a Flash digital edition of a book.
THE HANDLOADING BENCH 6mm NORMA BENCH REST


(Conclusion) by Laurie Holland


One downside of shooting the little BR is that it is such a good-mannered little cartridge with such a huge range of suitable bullets and powders available for it that given the availability of a 100 yard benchrest equipped range with a covered firing-point to keep the worst of the British weather out, you want to shoot it all day, every day.


It’s easy to get caught up in the search for that elusive ultimate components combination to the detriment of barrel- life. When I had the Remmy VS re- barrelled to the cartridge, an attraction was its barrel-life compared to its bigger 6.5-284 Norma stablemate but, that doesn’t mean you’ll get 5000 rounds out of it!


37


THE HANDLOADING BENCH 6mm NORMA BENCH REST (Conclusion) by Laurie Holland


Asking around, those with experience of the 6PPC in bench rest competition say the typical barrel loses its ‘edge’ at around 1300 rounds and the PPC uses 15% less powder and lighter bullets, so can be expected to have a longer accuracy life than the BR. Of course, ‘accuracy life’ likely means something very special and precise to a benchrest competitor as any tiny increase in group size is too much but, even so, I would expect the BR to start to go downhill after maybe 1500 rounds. The good news is that it seems to be a gradual process and you hear of 6BR varmint rifles still performing satisfactorily on this size of target at 3000 or more rounds. Certainly I found the VS noticeably lost its edge in 600 yard benchrest competition on, or just after, 2000 rounds.


However, the rifle still shot extraordinarily well by normal standards, so I used the remaining barrel life as an opportunity to see how ‘varmint’ bullets would shoot in the long-throated ‘Norma BR’ chamber and 1in 8 twist-rate rifling.


Many 6BR users employ their rifles on foxes, crows and faraway rabbits one day and 600 yard - or even further away - paper targets the next. I also know shooters who use their target 6BR piece on small deer species with 90-100gn expanding bullets but, whilst the requisite 1700 ft/lb ME to comply with the English and Welsh Deer Acts is achievable with some combinations, the cartridge is marginal for this application even with a full length barrel of 28 inches. You have to exceed 2767 fps with a 100gn bullet for 1700 ft/lbs and this may be a struggle with a 24 inch barrel – of course, this applies to many factory .243 Winchester loads too! However, since I covered 90- 108gn match bullets in the last issue, it’s fair to say


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92